Article
Polymer Science
Kyeong-Han Na, Bo-Sung Kim, Han-Sol Yoon, Tae-Hyeob Song, Sung-Wook Kim, Churl-Hee Cho, Won-Youl Choi
Summary: The Fe-doped TiO2 nanofibers prepared through electrospinning and calcination were characterized for their crystal phase, morphology, and photocatalytic performance. The results showed that under both UV and visible light irradiation, the Fe-doped TiO2 nanofibers exhibited excellent photodegradation rates in comparison to the pure TiO2 nanofibers. Further research on Fe dopant concentration control is necessary for improved photocatalytic activity.
Article
Engineering, Environmental
Xuelian Li, Saleem Raza, Changkun Liu
Summary: Electrospun TiO2@Ag@Cu2O nanofibers photocatalyst exhibits excellent visible light catalytic degradation performance, achieving a degradation efficiency of 99% for methylene blue within two hours. The combination of surface plasmon resonance effect of Ag and Z-scheme heterojunction structure contributes to the enhanced efficiency of the photocatalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Chih-Yen Chen, Chia-Chieh Tseng
Summary: Unlike most composite nanostructured catalysts, Ga2S3 semiconductors and g-C3N4 heterojunction photocatalysts exhibit high efficiency in removing methylene blue due to stable absorption and physical properties. Ga2S3 nanosheets have 40% higher activities than P25-TiO2 catalysts. Ga2S3/g-C3N4 heterostructures show significantly improved light absorption and photocatalytic efficiency compared to Ga2S3 and g-C3N4 alone. The study also investigated the synthesis process parameters and evaluated the photocatalytic mechanism and oxidation species involved.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Minho Lee, Song- Han, Changkyu Kim, Subramaniam Velumani, Arum Han, Abdel Hadi Kassiba, Homero Castaneda
Summary: The ultrathin nanocomposite coatings of ZrO2/ZnO/TiO2 on stainless steel were found to provide excellent corrosion protection and antimicrobial activity. The coating exhibited significantly higher impedance values compared to uncoated steel, and promoted cell proliferation and effective bacterial killing efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Jinrong Lu, Zhimin Li, Li Liu, Wenquan Cui
Summary: Supramolecular photocatalysts based on organic pi-conjugate semiconductors have shown great potential in the field of pollutants photodegradation. This study employed interfacial charge transfer (IFCT) on supramolecular photocatalysts of porphyrins and perylenediimide by Fe(III) ions to enhance the photocatalytic activity for degrading organic pollutants such as phenol. The introduction of Fe(III) significantly improved the photocatalytic activity, with a rate constant up to 42 times higher compared to the system without Fe(III). The enhancement of charge separation via IFCT mechanism was proven to be an effective strategy for improving the photocatalytic oxidation activity of supramolecular photocatalysts.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Linxuan Xie, Ting Du, Jing Wang, Yiyue Ma, Yongsheng Ni, Zhaoli Liu, Liang Zhang, Chengyuan Yang, Jianlong Wang
Summary: Photocatalysis has attracted attention for its efficient utilization of solar energy in environmental governance, leading to continuous investigation of various photocatalysts. Significant progress has been made in designing heterostructured photocatalysts for degradation of persistent organic pollutants, showing great potential in the field.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
D. Duong La, Ratan W. Jadha, Nilesh M. Gosavi, Eldon R. Rene, Tuan Anh Nguyen, Bui Xuan-Thanh, D. Duc Nguyen, W. Jin Chung, S. Woong Chang, X. Hoan Nguyen, Lam Dai Tran, Sheshanath V. Bhosale
Summary: Utilizing a solvophobic self-assembly protocol, nanostructured porphyrins were obtained from monomeric tetrakis-triphenylamine porphyrin in a THF/H2O mixture. The belt-like porphyrin aggregates showed better photocatalytic activity in water treatment compared to rod-like counterparts, highlighting the potential of porphyrins as nature-inspired photocatalysts for contaminants removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Zhenyu Shi, Lei Rao, Peifang Wang, Lixin Zhang
Summary: Graphite carbon nitride (g-C3N4) is a promising photocatalyst with high catalytic activity, low cost, and high biosafety. However, its application in water purification is limited due to the complexity of underwater photochemical reaction conditions and the disadvantages of g-C3N4 itself. To improve its underwater photocatalytic performance, researchers prepared a g-C3N4/carbon nanotubes (CNT-CN) composite photocatalyst with high specific surface area and enhanced light absorption capacity, which showed significantly improved photodegradation efficiency under different underwater transmission light.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Mohammad Nami, Amirhossein Rakhsha, Saeed Sheibani, Hossein Abdizadeh
Summary: ZnO nanorods (NRs) and CuO nanourchins (NUs) were combined to achieve the highest efficiency in methylene blue (MB) degradation. The nanocomposites showed improved interconnectivity and increased lifetime of photo-excited charge carriers with the addition of CuO NUs. The highest efficiency in MB degradation was achieved by the ZnO/(10 mol%)CuO nanocomposite, with a band gap energy of 2.9 eV and pore volume of 0.0180 cm3/g.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Physical
Atefeh Panahi, Rozita Monsef, Merzah Kareem Imran, Ayat Abdul Mahdi, Ali Abdul Kadhim Ruhaima, Masoud Salavati-Niasari
Summary: A study demonstrates the fabrication and characterization of TmVO4 nanostructures and TmVO4/Fe2O3 nanocomposites for effective photodecomposition of organic contaminants. The TmVO4/Fe2O3 nanocomposites show higher photocatalytic activity compared to pure TmVO4 and Fe2O3 nanoparticles. The recyclable magnetic TmVO4/Fe2O3 nanocomposites achieve 68.3% degradation efficiency of eriochrome black t (EBT) using visible light.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Kgabo P. Thaba, Mabel M. Mphahlele-Makgwane, Pannan Kyesmen, Mmantsae Diale, Priscilla G. L. Baker, Peter R. Makgwane
Summary: This study investigates the structure evolution of iron orthovanadate oxide (FeVO4) catalysts with various vanadium loading amounts, revealing the significant influence of V-metal loadings on the structure and electronic properties. The FeV-3 catalyst shows desirable optical properties and efficient degradation activity. The enhanced photodegradation performance is attributed to enriched visible-light harvesting range and efficient suppression of recombination, with the presence of Fe2O3 contributing to effective e(-)/h(+) separation and transfer.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Review
Polymer Science
Irena Maliszewska, Tomasz Czapka
Summary: Nanofibers with antimicrobial activity are important, and electrospinning is an effective method for their production. The parameters and environmental conditions during electrospinning can affect the fiber formation. Current research shows that electrospinning can be used to fabricate antimicrobial fibers for various industries.
Article
Environmental Sciences
Sabereh Salesi, Alireza Nezamzadeh-Ejhieh
Summary: This study prepared a highly efficient AgI/Ag2WO4 binary photocatalyst and characterized it. The experimental results showed that the coupled catalyst can effectively degrade organic pollutants. Furthermore, the performance of the coupled catalyst was influenced by the AgI:Ag2WO4 mole ratio and grinding time.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
O. Mertah, K. El Hajjaji, S. El Amrani, K. Tanji, I. Goncharova, A. Kherbeche
Summary: The heterostructures of Cu/TiO2@Ag3PO4, formed by placing Cu/TiO2 nanoparticles on Ag3PO4, can significantly enhance the photocatalytic activity for nitrate reduction under simulated visible light irradiation and exhibit good antibacterial activities against E. coli and S. aureus.
Article
Chemistry, Physical
Ashkan Bahadoran, Qinglei Liu, Saeid Masudy-Panah, Jeffrey Roshan De Lile, Seeram Ramakrishna, Ali Fakhri, Vinod Kumar Gupta
Summary: Ag-doped CoTiO3 (Ag-CTO) and Ag-doped CoTiO3/Chitosan-amylopectin (Ag-CTO/CSAP) were prepared using hydrothermal method for photocatalysis, showing a reduction in band-gap energy of Ag-CTO/CSAP nanocomposites and the highest catalytic activity for dye degradation. The nanocomposites have substantial bactericidal and fungicidal properties against specific microorganisms.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Aurica Farcas, Hadjer Ouldali, Comeliu Cojocaru, Manuela Pastoriza-Gallego, Ana -Maria Resmerital, Abdelghani Oukhaled
Summary: A multi-technique approach was used to prepare poly(3,4-ethylenedioxythiophene/cucurbit[7]uril) pseudorotaxanes (PEDOT.CB7-PPs), and their complexation ability with 3,4-ethylenedioxythiophene (EDOT) was confirmed. The synthesized PEDOT-CB7-PPs showed stable water dispersion as evidenced by dynamic light scattering measurements. The interaction between PEDOT-CB7-PPs and aerolysin nanopore was studied using nanopore resistive pulse sensing and computational modeling techniques, revealing strong interactions. This study provides new insights into supramolecular complexes based on CB7 for future applications in nanobiotechnology.
Article
Chemistry, Applied
Bianca-Iustina Andreica, Alexandru Anisiei, Irina Rosca, Andreea-Isabela Sandu, Aurelian Sorin Pasca, Liliana Mititelu Tartau, Luminita Marin
Summary: Chitosan-based nanofibers have various applications in medicine and healthcare, and this study introduces binary quaternized chitosan/chitosan fibers. Their preparation involved electrospinning ternary chitosan/quaternized chitosan/poly(ethylene oxide) solutions and selectively removing poly(ethylene oxide). The fibers demonstrated reversible water vapor adsorption/desorption, similar swelling degrees to commercial wound dressings, good mechanical properties, and strong antimicrobial activity. Biocompatibility tests on human fibroblasts and rats indicated their safe use in contact with tissues. Overall, these bioactive materials have potential for tissue regeneration, wound healing, and drug delivery systems.
CARBOHYDRATE POLYMERS
(2023)
Article
Materials Science, Ceramics
Petronela Pascariu, Corneliu Cojocaru, Mihaela Homocianu, Petrisor Samoila, Cosmin Romanitan, Djourelov Nikolay
Summary: A series of tin (Sn)-doped titania (TiO2) composites were prepared by electrospinning and calcination. The effect of dopant amounts and calcination temperatures on the composition, morphology, and photocatalytic activity of the composites was evaluated. The ([1.5%]Sn:TiO2) composite sintered at 500°C showed remarkable photocatalytic activity with a removal efficiency of about 100% and a rate constant of 9.685 x 10-2 min-1. Structural investigations were conducted to explain the photocatalytic activity towards water decontamination.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Georgeta Predeanu, Valerica Slavescu, Marius Florin Dragoescu, Niculina Mihaela Balanescu, Alexandru Fiti, Aurelia Meghea, Petrisor Samoila, Valeria Harabagiu, Maria Ignat, Ana-Maria Manea-Saghin, Bogdan Stefan Vasile, Nicoleta Badea
Summary: This work aimed to recycle lignocellulosic waste to design advanced carbon material precursors for pollution abatement. The waste and precursors were characterized and the precursors were synthesized using innovative microwave heating technology. The precursors exhibited good adsorption properties for environmental pollutants.
Article
Biochemistry & Molecular Biology
Petronela Pascariu, Corneliu Cojocaru, Petrisor Samoila, Cosmin Romanitan
Summary: Nd-doped ZnO nanostructures with varying amounts of Nd were prepared using the electrospinning-calcination method. The X-ray diffraction measurements confirmed the wurtzite structure and absence of impurities. Nd doping affected the crystallite size and lattice strain, as evidenced by Williamson-Hall plots. The ZnO-based nanostructures were effective photocatalysts for the degradation of methylene blue and ciprofloxacin under visible light, with the reaction rate constant increasing with mean crystallite size. The optimal catalyst showed high removal efficiency and stability in multiple catalytic cycles.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Biochemistry & Molecular Biology
Petronela Pascariu, Carmen Gherasim, Anton Airinei
Summary: This paper presents the development of metal oxide nanostructures (MONs) as photocatalysts for ciprofloxacin degradation. It provides an overview of the role of these materials in photocatalysis and discusses methods of obtaining them. It also reviews important oxide semiconductors and alternatives for improving their photocatalytic performance, as well as studies the degradation of ciprofloxacin and the factors affecting photocatalytic degradation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Andra-Cristina Enache, Corneliu Cojocaru, Petrisor Samoila, Victor Ciornea, Roxana Apolzan, Georgeta Predeanu, Valeria Harabagiu
Summary: This study developed an eco-friendly and cost-effective biosorbent for cationic brilliant green (BG) dye adsorption from aqueous media by valorizing pistachio shell agricultural waste. The adsorbent, named PSNaOH, was prepared by mercerizing pistachio shells in an alkaline environment. Various analyses were conducted to characterize the morphological and structural features of the adsorbent. The study found that the adsorption kinetics followed the pseudo-first-order model and the equilibrium data fitted well with the Sips isotherm model.
Article
Polymer Science
Daniela Ionita, Mariana Cristea, Susana Felicia Cosmulescu, Georgeta Predeanu, Valeria Harabagiu, Petrisor Samoila
Summary: In recent years, there has been an increasing exploitation of woody lignocellulosic biomasses for environmental mitigation and value-added production. This study conducted a detailed thermo-mechanical characterization on two types of lignocellulosic wastes and analyzed the degradation processes using thermal and dynamic mechanical analyses. The results showed that walnut shells had a better resolution in degradation steps and the DMA analysis revealed the effects of water traces and oil kernels on relaxation.
Article
Chemistry, Multidisciplinary
Corneliu Cojocaru, Petronela Pascariu, Andra-Cristina Enache, Alexandra Bargan, Petrisor Samoila
Summary: This study reports on the combination of adsorption and ultrafiltration for nitrite ion removal from contaminated water. Surface-modified nanoclay and porous polymeric membranes were used as adsorbent and filter respectively. The hybrid process was optimized using three computational tools and the optimal conditions provided by support vector machine (SVM) yielded the highest rejection efficiency and initial flux of permeate. A new composite membrane was also developed and tested under optimal conditions, showing enhanced rejection efficiency and lower initial flux of permeate. Molecular docking simulations revealed the interactions between nitrite ions and the functional moiety of the organonanoclay.
Article
Polymer Science
Bianca-Elena-Beatrice Cretu, Alina Gabriela Rusu, Alina Ghilan, Irina Rosca, Loredana Elena Nita, Aurica P. Chiriac
Summary: A new cryogel system based on PVA and PEBSA was developed for the incorporation of thymol. The study aimed to confer antioxidant properties to the system by encapsulating a-Tcp. The PVA/PEBSA_Thy_a-Tcp systems were characterized and showed synergistic antimicrobial and antioxidant effects.
Article
Chemistry, Medicinal
Ioana-Alexandra Plugariu, Luiza Madalina Gradinaru, Mihaela Avadanei, Irina Rosca, Loredana Elena Nita, Claudia Maxim, Maria Bercea
Summary: In this study, thermosensitive polyurethane-based hydrogels with various excipients were prepared and loaded with Meloxicam, a commonly used nonsteroidal anti-inflammatory drug. The results showed that the hydrogels had good release performance and could release significant amounts of the active substance over a certain period of time.
Article
Chemistry, Physical
Aurica Farcas, Hadjer Ouldali, Comeliu Cojocaru, Manuela Pastoriza-Gallego, Ana -Maria Resmerital, Abdelghani Oukhaled
Summary: A multi-technique approach was used to prepare and characterize poly(3,4-ethylenedioxythiophene/cucurbit[7]uril) pseudorotaxanes (PEDOT.CB7-PPs). By combining computational modeling and experimental validation, strong interactions between PEDOT-CB7-PPs and the aerolysin nanopore were identified. This study provides valuable insights into the interactions between CB7-based supramolecular complexes and biological entities.
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)