Article
Chemistry, Multidisciplinary
Yanling Qiu, Wenbin Xu, Pengfei Yao, Qiong Zheng, Huamin Zhang, Xianfeng Li
Summary: This study focuses on the electrochemical reduction of CO2 to valuable chemicals using Cu electrodes derived from Cu2O with predominant (111) facets. The optimized electrode shows high faradaic efficiency for HCOOH production, surpassing most reported Cu electrodes. The catalytic activity of unit active sites on Cu2O-derived Cu electrodes is found to be higher than that on blank Cu electrodes, with OCHO* production being favored in the presence of cetyltrimethylammonium bromide.
Review
Chemistry, Multidisciplinary
Andrea Conte, Marco Baron, Sara Bonacchi, Sabrina Antonello, Alessandro Aliprandi
Summary: This review summarizes the recent advances in the research on copper and silver nanowires as transparent conductive electrodes (TCEs) and electrocatalysts for CO2 reduction. Different strategies for the synthesis, functionalization/activation, and the effect of nanowire morphology on electrochemical performance are discussed. Translation of NW-based TCEs in this field offers novel perspectives for the development of highly efficient, selective, and stable electrocatalysts for CO2 reduction.
Article
Engineering, Environmental
Jing Xu, Jiong Cheng, Runtian He, Jiaqi Lu, Chunling Wang, Heng Zhong, Fangming Jin
Summary: CO2 utilization, especially biomass-based CO2 utilization with an iron cycle (BCU-Fe) system, has the potential to effectively reduce greenhouse gas (GHG) emissions. This study quantified the GHG reduction potential of the BCU-Fe system under various process designs, revealing considerable GHG emission reduction. The proposed ex-ante evaluation approach not only demonstrates the benefits of mitigating climate change through the BCU-Fe system, but also provides a generic tool to guide the industrialization of emerging carbon-neutral technologies.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2023)
Article
Chemistry, Physical
Maryam Abdinejad, Erdem Irtem, Amirhossein Farzi, Mark Sassenburg, Siddhartha Subramanian, Hugo-Pieter Iglesias Van Montfort, Davide Ripepi, Mengran Li, Joost Middelkoop, Ali Seifitokaldani, Thomas Burdyny
Summary: The researchers combined silver and pyridine catalysts through a one-pot and irreversible electrografting process, which resulted in the enhanced conversion of carbon dioxide. By tailoring the pyridine carbon chain length, a higher onset potential was achieved. It was demonstrated that the integration of two different catalytic structures can lead to a cocatalytic effect.
Article
Environmental Sciences
K. R. Deepak, Sooraj Mohan, P. Dinesha, Rajasekhar Balasubramanian
Summary: For the first time, activated hydrochar was prepared from orange peel waste using KOH for potential environmental applications. The impact of hydrothermal carbonization temperature on the CO2 adsorption capacity of the activated hydrochar was investigated. The results showed that the activated hydrochar had high microporosity and various functional groups, making it suitable for effective adsorption. The highest CO2 uptake was observed for the hydrochar produced at a temperature of 220°C.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Bei Zhang, Yiqun Jiang, Rajasekhar Balasubramanian
Summary: This study presents a novel method for producing carbon foam from biowaste through modified hydrothermal carbonization and pyrolysis processes, resulting in foam and multi-porous structures. The characterization results show that the biowaste-derived carbon foam possesses hierarchical micropore, mesopore, and macropore structures. The potential application of this material for CO2 capture is demonstrated.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Chemistry, Physical
Qiang Wang, Yaru Li, Zichen Yu, Xuewen Li, Shouhua Yin, Wen Ji, Yonghua Hu, Weiping Cai, Xianbiao Wang
Summary: In order to reduce greenhouse gas emissions and promote carbon cycling, there is a strong demand for highly porous carbon adsorbents. This study presents a low-cost and environmentally friendly carbonization strategy to produce highly porous carbon from biomass, utilizing sugarcane as the biomass source. The resulting hydrothermal-pyrolysis derived porous carbon (HPC) has a BET surface area of 938 m2/g, significantly higher than that of carbon produced through direct pyrolysis. The HPC exhibits remarkable CO2 adsorption ability, selectivity, and recyclability, making it a potential candidate for CO2 capture.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Environmental
Marco Loeffelholz, Jens Osiewacz, Alexander Lueken, Karen Perrey, Andreas Bulan, Thomas Turek
Summary: This article presents a spatially resolved mathematical model for low temperature electrochemical CO2 reduction (eCO(2) R) at silver gas diffusion electrodes. The model has been validated using flow cell measurements and provides insights into the inhibition of catalyst performance by the product carbon monoxide. The results highlight two main problems that need to be addressed for achieving a more efficient eCO(2) R process at high current densities.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Azeem Sarwar, Majid Ali, Asif Hussain Khoja, Azra Nawar, Adeel Waqas, Rabia Liaquat, Salman Raza Naqvi, Muhammad Asjid
Summary: In this study, activated carbon based adsorbents were synthesized from hydro-char through modified hydrothermal carbonization and thermochemical activation methods, exhibiting high specific surface area and microporous volume with notable CO2 adsorption capacity. The experimental data fit various adsorption isotherm models, and the adsorption of CO2 was found to be spontaneous and exothermic on the adsorbent.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Multidisciplinary Sciences
Zhendong Liu, Junqiang Zhang, Xinze Li, Rui Cui, Jiliang Ma, Runcang Sun
Summary: Highly crystalline oxygen-doped carbon nitride nanotubes (O-CNNTs-x) were prepared using an ammoniumfluoride-assisted hydrothermal/calcination strategy, which exhibited excellent photocatalytic activity and the ability to modulate charge carrier motion. This study offers a facile approach for fabricating highly crystalline element-doped CN and demonstrates the viability of co-photocatalytic CO2 reduction and biomass selective oxidation.
Article
Chemistry, Inorganic & Nuclear
Francesco Mattarozzi, Nienke Visser, Jan Willem de Rijk, Peter Ngene, Petra de Jongh
Summary: This study presents a strategy for synthesizing highly dispersed, ligand-free silver Ag nanoparticles supported on carbon, emphasizing the importance of heat treatment atmosphere and carbon surface chemistry in controlling the Ag particle size. The Ag weight-based activity of the catalysts scales inversely with particle size, while the Ag surface-specific activity is independent of particle size in the 10-30 nm range.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Paloma Nayra da Silva Lima, Anupama Ghosh, Ariane Nascimento, Lais Helena Sousa Vieira, Rubens Silva Costa, Odair Pastor Ferreira, Guilherme J. P. Abreu, Kazunori Fujisawa, Edson Cavalcanti Silva-Filho, Antonio Gomes Souza Filho, Anderson Oliveira Lobo, Mauricio Terrones, Bartolomeu Cruz Viana
Summary: Activated carbon (AC) was synthesized from babassu mesocarp through thermal pre-treatments and potassium hydroxide activation, resulting in ACs with varied structure and surface properties. The ACs exhibited low structural order, high specific surface area, micropores, mesopores, and negatively charged surface oxygen functional groups, making them potential adsorbents for cationic chemical species. The adsorption of methylene blue cationic dye on the ACs, driven by Coulombic interaction and diffusion, demonstrated fast and efficient dye uptake, making them renewable and sustainable adsorbents.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Electrochemistry
Jens Osiewacz, Marco Loeffelholz, Lydia Weseler, Thomas Turek
Summary: Carbon monoxide is the main product of electrochemical CO2 reduction on silver. CO poisoning poses a common challenge in catalytic systems, necessitating research on silver catalysts for electrochemical CO2 reduction. The inhibition of catalytic performance by CO, which blocks active sites, suggests that the overall process is limited by CO desorption. As a result, the catalyst self-poisons, leading to reduced rates of CO2 reduction and hydrogen evolution. Experimental investigations confirm this effect at various CO concentrations and current densities. Hence, CO poisoning must be considered when modeling electrochemical CO2 reduction using silver gas diffusion electrodes.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Applied
Shibiao Zhang, Xiong Zhang, Junjie Zhang, Huanhuan Zheng, Guangyang Li, Kuo Zeng, Jingai Shao, Haiping Yang, Shihong Zhang, Hanping Chen
Summary: In this study, a three-dimensional interconnected porous structure of carbon aerogel was prepared from cellulose and used for the electrocatalytic reduction reaction of CO2 (CO2RR). To improve the conductivity and active sites, melamine was added as a nitrogen source for in-situ synthesis of nitrogen-doped catalysts at different pyrolysis temperatures. The results showed that increasing the pyrolysis temperature gradually formed abundant pore structures that provided sufficient transport channels for CO2 and products. N3-750 exhibited the highest CO faradaic efficiency (FE) of 75.90% due to its large surface area and high surface N/C ratio. The high content of pyridinic N provided enough active sites for the formation of *COOH intermediate. Furthermore, the catalyst showed good stability as evidenced by only a slight decrease in CO FE after eight hours of reaction. Therefore, the nitrogen-doped cellulosic biomass-based carbon aerogel has the potential to be a stable and efficient CO2RR catalyst.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Environmental Sciences
Lei Yang, Jianing Shen, Wenying Zhang, Wenpei Wu, Zifei Wei, Mengfang Chen, Jingchun Yan, Linbo Qian, Lu Han, Jing Li, Mingyue Gu
Summary: A facile and scalable method was developed to synthesize stable and effective nano zero-valent iron (nZVI)-carbon composites for peroxymonosulfate (PMS) activation in groundwater. The composites exhibited excellent catalytic performance for the degradation of organic contaminants at a wide range of pH values, with potential for practical application in groundwater remediation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Materials Science, Ceramics
M. Rocha, Francisca P. Araujo, S. Castro-Lopes, Idglan S. de Lima, Edson Cavalcanti Silva-Filho, Josy Anteveli Osajima, Carla S. Oliveira, Bartolomeu C. Viana, Luciano C. Almeida, Y. Guerra, R. Pena-Garcia
Summary: In this study, the influence of Fe and Pr addition on the structural, optical, and antibacterial properties of spherical ZnO nanoparticles synthesized via sol gel method was investigated. The lattice constants values increased while the average crystallite size decreased with varying Pr concentration. Raman and FTIR spectroscopies confirmed the single-phase formation of ZnO and the presence of oxygen vacancies. The samples exhibited agglomerated spherical morphology and the textural properties were affected by the inclusion of Fe. The synthesized materials showed promising antimicrobial activity against Escherichia coli and Staphylococcus aureus due to nanomaterial-bacteria interactions.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Tainara G. Oliveira, Yuset Guerra, Suzana Araujo-Barbosa, Suziete B. S. Gusmao, Anderson O. Lobo, Edson C. Silva-Filho, Francisco Eroni P. Santos, R. Pena-Garcia, Bartolomeu C. Viana
Summary: Transition magnetic metals (Fe, Ni, Co) were inserted into sodium titanate nanotubes and subjected to calcination. The calcination process caused breakdown of the nanotubular structure at 400 degrees C and formation of TiO2 nanoparticles, mainly in the anatase and rutile phases, at 800 degrees C. The insertion of Fe3+, Ni2+ and Co2+ ions promoted red shift in UV-Vis and smaller energy gap compared to NaTiNT. Additionally, the samples calcined at 400 degrees C exhibited higher conductivity and all samples showed ferromagnetic behavior at room temperature.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Katharinne S. N. T. Soares, Steffane Q. Nascimento, Selma E. Mazzetto, Viviane G. P. Ribeiro, Giuseppe Mele, Luigi Carbone, Roberto A. S. Luz, Everson Thiago S. Geroncio, Welter Cantanhede
Summary: This study reports the synthesis and characterization of a nanosized composite material (Co3[Co(CN)6]2/ZnO) formed by cobalt Prussian blue analogue and zinc oxide nanoparticles. The nanocomposite exhibits good dispersion and stability, and shows semiconductor properties.
INORGANICA CHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Adriano S. S. Soares, Francisca P. P. Araujo, Robson Franca, Josy A. A. Osajima, Yuset Guerra, Samuel Castro-Lopes, Edson C. C. Silva-Filho, Francisco E. E. Santos, Luciano C. C. Almeida, Bartolomeu C. C. Viana, Ramon R. Pena-Garcia
Summary: In this study, Co-doped ZnO structures were synthesized using the co-precipitation method, and the influence of pH on their structural, optical, morphological properties, and photocatalytic response towards ibuprofen was investigated. It was found that the growth of ZnO structures was affected by the pH, and the substitution of Co2+ ions in the host lattice led to an increase in lattice constants. The samples synthesized at pH = 7 exhibited spherical nanoparticles that self-assembled into hexagonal disk-like structures, while nanorods were observed for samples synthesized at pH = 10 and 13. Photoluminescence spectra analysis revealed the presence of structural defects, mainly single and doubly ionized oxygen vacancies, which, together with pH and dopant, contributed to variations in the optical band gap. Lastly, the photocatalytic response towards Ibuprofen under UV irradiation was enhanced in the presence of H2O2, suggesting improved photocatalytic properties of Co-doped ZnO under optimized conditions.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Paloma Nayra da Silva Lima, Anupama Ghosh, Ariane Nascimento, Lais Helena Sousa Vieira, Rubens Silva Costa, Odair Pastor Ferreira, Guilherme J. P. Abreu, Kazunori Fujisawa, Edson Cavalcanti Silva-Filho, Antonio Gomes Souza Filho, Anderson Oliveira Lobo, Mauricio Terrones, Bartolomeu Cruz Viana
Summary: Activated carbon (AC) was synthesized from babassu mesocarp through thermal pre-treatments and potassium hydroxide activation, resulting in ACs with varied structure and surface properties. The ACs exhibited low structural order, high specific surface area, micropores, mesopores, and negatively charged surface oxygen functional groups, making them potential adsorbents for cationic chemical species. The adsorption of methylene blue cationic dye on the ACs, driven by Coulombic interaction and diffusion, demonstrated fast and efficient dye uptake, making them renewable and sustainable adsorbents.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Caique Diego de Abreu Lima, Roniel dos Santos Sousa, Antonio Werbeson Miranda, Joao Victor Barbosa Moura, Gardenia de Sousa Pinheiro, Bartolomeu Cruz Viana, Iara Souza Lima, Thiago Mielle Brito Ferreira Oliveira, Oswaldo Baffa, Jefferson Ferraz Damasceno Felix Araujo, Cleanio da Luz Lima
Summary: This study investigated the synthesis, characterization, and thermal stability of pure and Al ion-exchange titanate nanotubes (Na2Ti3O7 and NaxAlyTi3O7, respectively). The results revealed the obtainment of sodium titanate and aluminum titanate nanotubes with different average lengths and diameters. The presence of Al ions in the crystal lattice affected the energy exchange between the unpaired species and the lattice. The thermal stability of sodium titanate nanotubes was influenced by sodium ions, while the incorporation of Al3+ ions into the nanotube lamellae decreased the thermal stability of aluminum titanate nanotubes.
SOLID STATE SCIENCES
(2023)
Article
Materials Science, Coatings & Films
Luciana Mendes Ribeiro de Sousa, Moises das Virgens Santana, Bruno Pereira da Silva, Thays Oliveira Marques, Ramon Pena-Garcia, Angel Alberto Hidalgo, Maria Leticia Vega, Bartolomeu Cruz Viana, Thiago Domingues Stocco, Luana Marotta Reis de Vasconcellos, William Chiappim, Rodrigo Savio Pessoa, Fernanda Roberta Marciano, Anderson Oliveira Lobo
Summary: By using Atomic Layer Deposition (ALD) and simulated body fluid method, Ti6Al7Nb alloy was modified with Al2O3 and coated with apatite. Various techniques including X-Ray Fluorescence (FRX), Energy Scattering X-Ray Spectroscopy (EDS), Scanning Electron Microscopy (SEM), X-Ray Diffraction Spectroscopy (XRD), Raman Spectroscopy, and Atomic Force Microscopy (AFM) were used to determine the chemical and crystallographic composition of Ti6Al7Nb before and after surface modifications. The results showed that the surface modifications improved the bioactivity of the titanium alloy by promoting the formation of microporosity and influencing the nucleation of apatite at the nanoscale. These nanofilms were found to be non-cytotoxic, making them promising for tissue engineering applications.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Gelson L. C. Rodrigues, Tainara G. de Oliveira, Suziete B. S. Gusmao, Odair P. Ferreira, Thiago L. Vasconcelos, Yuset Guerra, Raquel Milani, Ramon Pena-Garcia, Bartolomeu C. Viana
Summary: Titanate nanotubes were synthesized and exchanged with erbium ions through an ion exchange reaction. The effects of thermal treatment atmosphere on the structural and optical properties of erbium titanate nanotubes were evaluated. It was found that the morphology of the nanotubes was preserved with the presence of erbium oxide phases. The dimensions of the samples were varied by ion exchange and thermal treatment, which also affected the optical properties. The results suggest the potential applications of thermally treated erbium titanate nanotubes in optoelectronics and photonics.
Article
Materials Science, Ceramics
C. Alves, J. Matilla-Arias, F. Guerrero, S. Castro-Lopes, Y. Guerra, Bartolomeu C. Viana, E. Padron-Hernandez, Joao M. Soares, R. B. da Silva, Marcos G. Ghislandi, R. Pena-Garcia
Summary: In this study, the influence of La3+ cations insertion on the crystallography, morphology, and magnetic properties of Y3Fe5-xLaxO12 compound was investigated using the sol-gel method. The Rietveld refinement method was used to confirm the Fe3+ by La3+ cations replacement and quantify the structural parameters. The results showed that La3+ cations insertion significantly affected the lattice constant, crystallite size, microstrain, sites occupancy, bond angles and distances of the YIG crystal structure.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Keyla R. B. da Silva Costa, Marcel Leiner de Sa, Francilio de Carvalho Oliveira, Dalton Dittz, Bianca Sousa Leal, Joao Marcelo de Castro e Sousa, Guilherme J. P. Abreu, Tainara G. de Oliveira, Suziete B. S. Gusmao, Anupama Ghosh, Yuset Guerra, Bartolomeu C. Viana
Summary: Sodium titanate nanotubes (NaTiNT) were synthesized and intercalated with gallium and/or cerium ions, forming a complex heterostructure. These hybrid nanomaterials showed increased cytotoxic activity in melanoma cells, indicating their potential in health applications. The ion exchange reactions preserved the original tubular structure of the nanotubes but resulted in significant changes in their surface and interlamellar environment.
JOURNAL OF NANOPARTICLE RESEARCH
(2023)
Article
Chemistry, Analytical
Lucas C. C. Faustino, Joao P. C. Cunha, Welter Cantanhede, Lauro T. T. Kubota, Everson T. S. Geroncio
Summary: This study proposes a new method of using a 3D-printed pencil holder to fabricate paper-based electrochemical devices, aiming to solve the lack of reproducibility in hand-drawn electrodes. By keeping the pressure and angulation of the pencil constant on the paper substrate, this method significantly improves the reproducibility and reliability of pencil-drawn electrodes. The results demonstrate the high reproducibility and accuracy of the electrodes prepared with the 3D-printed support. This approach is believed to make pencil-drawn technology more robust, accessible, reliable, and inexpensive.
Article
Materials Science, Multidisciplinary
W. J. Sousa, Bartolomeu C. Viana, Joao M. Soares, R. B. da Silva, R. Pena-Garcia, E. Padron-Hernandez
Summary: This study investigates the behavior of magnetic properties, including saturation magnetization, of YIG nanoparticles doped and co-doped with Gd and La at different concentrations as a function of temperature. The results show that the magnetic properties are sensitive to both doping concentration and temperature, with a weakened ferrimagnetic coupling observed as the dopant concentration increases. Additionally, changes in the cubic anisotropy constant with temperature were observed.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Physical
F. D. V. Araujo, F. W. N. Silva, T. Zhang, C. Zhou, Zhong Lin, Nestor Perea-Lopez, Samuel F. Rodrigues, Mauricio Terrones, Antonio Gomes Souza Filho, R. S. Alencar, Bartolomeu C. Viana
Summary: In this study, the behavior of monolayer WS2 on a drilled Si3N4 substrate was investigated through Raman spectroscopy and photoluminescence measurements. It was found that the Si3N4 substrate affects the optical properties of monolayer WS2. Density functional theory and quantum molecular dynamics simulations showed that strain and charge transfer mechanism are important factors for the decrease in photoluminescence.
Article
Environmental Sciences
Andre Luiz Ferreira Carvalho Melo, Marcelo Teixeira Carneiro, Alan Icaro Sousa Morais, Bartolomeu Cruz Viana, Francisco Eroni Paz Santos, Josy Anteveli Osajima, Roosevelt D. S. Bezerra, Ramon Raudel Pena-Garcia, Luciano C. Almeida, Santiago Medina Carrasco, Edson C. Silva-Filho
Summary: Water pollution is a global problem, and this study focused on developing a new technology using activated biochar from pequi almonds for dye removal. The activated biochar showed higher adsorption capacity compared to the original biochar, due to its increased cracks and pores. The study found that the adsorption kinetics followed a pseudo-second-order model, and the Langmuir model described the adsorption isotherms. This research demonstrates the potential application of activated biochar for dye removal in aqueous environments.
Article
Green & Sustainable Science & Technology
Marcelo Teixeira Carneiro, Alan Icaro Sousa Morais, Andre Luiz Ferreira de Carvalho Melo, Francisco Jose Lustosa Ferreira, Francisco Eroni Paz Santos, Bartolomeu Cruz Viana, Josy Anteveli Osajima, Roosevelt D. S. Bezerra, Maria Del Mar Orta Cuevas, Ramon Raudel Pena-Garcia, Luciano C. Almeida, Edson C. Silva-Filho
Summary: This study investigated the efficiency of removing the methylene blue dye using chemically activated biochar from the leaf and stem of water hyacinth as a bioadsorbent. The results showed that the adsorption was more significant in the leaf. Pseudo-second-order kinetics and Langmuir model were found to be suitable for describing the adsorption behavior.
Article
Chemistry, Multidisciplinary
Alaauldeen A. Duhduh, Chou-Yi Hsu, Mustafa Humam Sami, Anupam Yadav, Russul Thabit, Sagr Alamri, Abdelmajeed Adam Lagum, Ali A. Rajhi
Summary: Density functional theory (DFT) calculations were used to investigate the application of a Zn12O12 nanocage as an anode material in Na-ion batteries (NIBs). The pure nanocage showed low performance, but encapsulating a chloride led to a significant increase in voltage, surpassing carbon nanotubes and C24 fullerene.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Hiroyuki Ikemoto, Toshihiko Fujimori, Takafumi Miyanaga, Reo Kawaguchi, Koki Urita, Masao Tabuchi
Summary: This study investigated the structures of two Se chains confined inside single-walled carbon nanotubes (SWCNTs), revealing that the chains were linear and parallel. The covalent bond between Se and SWCNT was found to be stronger than that between Se and trigonal Se (t-Se). The interaction between chains was attributed to the overlap of electronic orbitals, and the disappearance of this overlap in the encapsulated Se chains enhanced the covalent bonds.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Suman Yadav, Atul Gour, Sadhna Singh
Summary: In this study, we investigated the electronic and thermoelectric properties of rare-earth half-Heusler XPtBi (X = Gd, Nd, Y) topological semimetals compounds using density functional theory. Our results indicate that the inclusion of spin orbit coupling has a significant impact on the electronic band structure and spin order, making it promising for spintronic applications. We found different topological states in these compounds and observed enhanced power factor in YPtBi with the inclusion of SOC.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Takahiro Ozawa, Hiroshi Nakanishi, Koichi Kato, Ryota Shimizu, Taro Hitosugi, Katsuyuki Fukutani
Summary: In this study, we elucidate the hopping mechanism of hydrogen at intermediate temperature using a combination of experimental data and theoretical calculations. We find that the transition from thermal hopping to quantum tunneling is attributed to resonant tunneling, which is achieved through the resonant tunneling of discrete vibrational states between the edge octahedral site and the tetrahedral site. We also demonstrate that the tunneling rate can be tuned by energy level matching.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Ankita Nandi, Ritam Mehera, Moumita Mandal, Paramesh Chandra, Swapan K. Mandal, Naznin Ara Begum, Chandan K. Jana, Nilanjana Das
Summary: In this study, stable biogenic ZnO nanoparticles were successfully synthesized using a biosynthesis method, and their effects on oxidative stress parameters in Saccharomyces cerevisiae were investigated. The results demonstrate that high concentrations of ZnO nanoparticles may induce oxidative stress conditions, suggesting caution in their extensive use.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
P. S. Dighe, A. A. Bhoite, V. L. Patil, N. L. Tarwal, P. B. Sarawade
Summary: In this study, Ni-Co layered double hydroxide (LDH) nanocomposites with excellent electrochemical properties were prepared using hydrothermal technique. The as-obtained material exhibited high specific capacitance and remarkable energy density, showing great potential for supercapacitor applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Muhammad Danish, Misbah ul Islam, Farooq Ahmad, M. Nadeem Madni, M. Jahangeer
Summary: This study synthesized M-type hexaferrite and graphene oxide using sol-gel auto-combustion and modified Hummer process. The structure and morphology of the materials were characterized by XRD and SEM. The experimental results showed that coupling magnetic ferrite with graphene oxide can tune the electromagnetic properties of the materials, with potential applications in various fields.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Abrar U. Hassan, Yuchuan Li
Summary: This study presents a new design strategy of N-doped fused ring electron acceptors for organic dye Y123 in photovoltaic and optical devices. The evaluation of five novel dyes shows their positive contributions to charge transfer. Impressive photovoltaic performance is observed in one of the dyes, with high light harvesting efficiency and maximum power output.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Ashvin Kanzariya, Shardul Vadalkar, Sourav Kanti Jana, L. K. Saini, Prafulla K. Jha
Summary: Graphene quantum dots (GQDs) with quantum confinement and size effects show great potential for sensing applications. This computational study investigates the adsorption performance of pristine and transition metal-doped coronene GQDs to hazardous gases. The results suggest that doping with chromium (Cr) or nickel (Ni) enhances the gas adsorption performance, with Cr-doped GQDs showing strong interaction with gas molecules and potential as a gas remover, and Ni-doped GQDs showing potential as a CNCl sensor.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Vladimir V. Poborchii, Victor A. Sachkov, Alexander A. Shklyaev, Alexander V. Fokin, Pavel I. Geshev
Summary: This study investigates the polarized optical absorption and Raman spectra of -5 nm diameter tellurium nanowires confined in chrysotile asbestos nanotubes. The results show a strong interaction between the nanowires and light polarized parallel to the nanowires, while a weaker interaction is observed for light polarized perpendicular to the nanowires. This has significant implications for photonic and photo-electric applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Stanislav Cichon, Frantisek Maca, Vaclav Drchal, Katerina Horakova, Irena Kratochvilova, Jan Lancok, Vladimir Chab, Patrik Cermak, Jiri Navratil, Cestmir Drasar
Summary: In this study, a reliable method for preparing high-quality single crystal substrates doped with Bi2Se3 was developed. The electronic properties and chemical states of atoms in the substitutional position and native defects in the topological insulator were analyzed using experimental and theoretical methods. The relationship between the position of the Dirac cone and valence band maximum was explored and discussed.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Ikkurthi Kanaka Durga, Dasha Kumar Kulurumotlakatla, Tholkappiyan Ramachandran, Yedluri Anil Kumar, D. Amaranatha Reddy, K. V. G. Raghavendra, Asma A. Alothman, Sunkara Srinivasa Rao
Summary: Nickel molybdate oxide and tungsten trioxide have potential as electrode materials for supercapacitors, but their poor conductivity and fast capacitance fading limit their performance. By building a hierarchical nanoflower structure, the electrochemical performance of the supercapacitor is enhanced.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Elnaz Saadinia, Mohammad Almasi Kashi, Amir H. Montazer
Summary: Fe-based nanowires containing nonmagnetic elements, fabricated using a pulse electrodeposition method in porous anodic alumina membranes, exhibit magnetic tunability. The magnetic properties of Fe100-xSnx NW arrays, with a diameter of about 35 nm, such as coercivity and squareness values, decrease with increasing Sn content. The structure of the FeSn NWs, dominated by Fe or FeSn alloy crystal phase, can be either single domain or pseudo-single domain states depending on the Sn content.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Xinkai Liu, Tingting Liu, Yuanliang Zhou, Jing Wen, Jinmei Dong, Chenggong Chang, Weixin Zheng
Summary: CuS-Mg/S-BC composites modified by one-pot sulfurization exhibited higher removal efficiency in adsorption and photocatalytic removal of dyes, thanks to the functional groups and vacant sites formed at the interface for enhanced adsorption and photon capture.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Yixing Hao, Fang Zhu, Hao Cheng, Sridhar Komarneni, Jianfeng Ma
Summary: A magnetic porous composite catalyst synthesized from CoFe2O4 and CuS showed high degradation efficiency for organic pollutants under visible light conditions, using non-radical degradation as the main pathway.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
