Article
Nanoscience & Nanotechnology
Arpan Kumar Nayak, Thamizharasan Gopalakrishnan
Summary: This study demonstrates a facile sol-gel method to synthesize nanomaterials with different phases and crystal structures, which has remarkable importance for supercapacitors and solid-state supercapacitor devices, showing potential applications in energy storage devices.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
M. A. Yewale, R. A. Kadam, N. K. Kaushik, L. N. Nguyen, Umesh T. Nakate, L. P. Lingamdinne, J. R. Koduru, P. S. Auti, S. V. P. Vattikuti, D. K. Shin
Summary: Nanostructured binary metal oxides have the potential to improve electrochemical performance due to their structural stability, electronic conductivity, and multiple oxidation states. In this study, uniform NiCo2O4 nanoballs were successfully prepared and investigated for their supercapacitive properties. The nanoballs prepared at 14 h reaction time showed the highest supercapacitor performance, with the highest electrochemical active surface area and transfer coefficient, as well as good stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Katalin Majrik, Zoltan Paszti, Laszlo Korecz, Judith Mihaly, Zoltan May, Peter Nemeth, Catia Cannilla, Giuseppe Bonura, Francesco Frusteri, Andras Tompos, Emilia Talas
Summary: The study found that the microstructure of sol-gel TiO2 prepared under different conditions affects its photocatalytic performance, which cannot be improved even by annealing at high temperatures.
Article
Engineering, Electrical & Electronic
P. Prasannalakshmi, N. Shanmugam, A. Senthil Kumar, S. Suthakaran
Summary: This study presents a sol-gel route for fabricating TiO2/ZnS electrodes with various amounts of ZnS for supercapacitor applications. Different dosages of zinc and sulfide precursors were used and the electrochemical properties of the electrodes were evaluated. The results showed that the electrode with 0.25 M of zinc and 0.5 M of sulfide exhibited a large capacitance due to its increased surface area and low charge transfer resistance. The cycle stability test of the asymmetric capacitor (ASC) revealed a 5% dip in capacitance retention over 2000 cycles.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Hamnesh Mahajan, Shammi Kumar, Anjori Sharma, Ibrahim Mohammed, Manisha Thakur, Amarjeet Kaur, A. K. Srivastava
Summary: Sol-gel methodology was used to produce Mn0.3Co0.2Zn0.5Fe2O4 ferrite nanoparticles at different sintering temperatures. XRD, FTIR, FESEM, EDX, VSM, and electrochemical studies were conducted to analyze the properties of the synthesized specimens. The results showed the formation of spinel structure, agglomerated grains, stoichiometry confirmation, enhanced saturation magnetization with higher sintering temperature, and higher specific capacitance for Mn0.3Co0.2Zn0.5Fe2O4 (1150 degrees C).
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Anithadevi Sekar, Ramanan Vadivel, Ramanujam Ganesh Munuswamy, Rakhi Yadav
Summary: The study introduces a new fingerprint visualizing agent, the biocompatible zinc oxide-carbon dots/silica gel (C-ZnO-dots/Si) nanopowder, which is low-cost and non-toxic. Results show that the synthesized nanopowder performs well in LF identification and can extract features of Level 1-3.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Congcong Rong, Jianan Zhang, Song Chen, Yixuan Wang, Toshiyuki Ikoma, Xiaona Li, Weiyi Chen
Summary: Silica hollow microspheres were prepared as biocompatible cell carriers using emulsified gelatin microspheres as sacrificial templates. SEM observations showed their spherical morphology with a hollow structure and a diameter of 50-200 μm. FT-IR spectrum revealed the presence of Si-O-Si bonds. Gelatin microspheres served as supporting matrix and sacrificial templates for the formation of hollow structure. The silica hollow microspheres were found to be biocompatible and supported cell attachment and proliferation when seeded with osteoblast MC3T3-E1 cells, indicating their potential as biocompatible cell carriers.
Article
Materials Science, Ceramics
Pramod Agale, Vaibhav Salve, Kundan Patil, Satish Mardikar, Santosh Uke, Sunil Patange, Paresh More
Summary: In this study, nickel doped magnetically separable Cu1-xNixMn1.0Fe1.0O4 ferrite was synthesized using the sol-gel autocombustion method. The sample exhibited a cubic spinel structure and single phase. Scanning electron microscopy observed agglomerated particles with multi-faceted shapes. Energy-dispersive X-ray analysis confirmed the elemental composition. Transmission electron microscopy images were consistent with scanning electron microscopy images, showing the crystalline nature of the synthesized samples. The magnetic properties showed a transformation from ferrimagnetic to superparamagnetic character with increasing concentration of Ni2+. The electrochemical measurements revealed that Cu1-xNixMn1.0Fe1.0O4 with (x = 0.75) exhibited superior electrochemical performance, with high specific capacitance of 975 F g-1, high energy density of 20.8 Whkg-1, and 94.4% capacity retention over 5000 cycles.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Rina R. Tikare, Rohit R. Powar, Sharadchandra S. Patil, Dhanaji G. Kanase
Summary: Mixed metal oxides with different iron content (x = 0.2-1.0) were synthesized using sol-gel auto combustion process. The properties of the oxide materials were characterized using various techniques. The results showed that the replacement of aluminium ions affected the structure, bandgap, and crystallite size of the mixed metal oxides. The iron-substituted aluminate gas sensors exhibited good performance in detecting gases such as CO, H2S, and NO2.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Otavio Rovere Bittencourt, Ingrid Vicente Farias, Flavio Henrique Reginatto, Leliz Ticona Arenas, Herica Aparecida Magosso, Alexandre Luis Parize
Summary: The presence of micropollutants in springs in Brazil and other countries has been detected. This study reports the synthesis and characterization of a xerogel-based adsorbent for the removal of the emerging contaminant ethinylestradiol. The adsorbent showed high adsorption capacity, thermal stability, and good regeneration ability.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Leodoro P. dos Santos Filho, de F. P. Maria P. Nascimento, Liziane Marcal, Katia J. Ciuffi, Marcio L. A. e Silva, Eduardo J. Nassar, Lucas A. Rocha
Summary: The sol-gel process is an interesting strategy to obtain hybrid materials, with mesoporous silica showing large specific area and pore volume, and demonstrating efficient antimicrobial properties. Mesoporous silica matrixes prepared via the sol-gel process using surfactants and copolymers as structure-driving agents showed the most significant effects in the study.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Lingjiao Zhan, Fuqin Zhang, Qiang Liu, Juan Wang, Chaozhong Wu, Shuwei Yao, Yunzhu Ma, Wensheng Liu
Summary: This study investigates the effect of silica sols on the interaction of precursor sol-gel particles, high-temperature phase transition, and microstructure of alumina-mullite fibers. The results show that silica sol affects particle interactions and distribution in the mixed sol. Non-homogeneous precursor sols generate α-Al2O3 at 1400℃, while homogeneous precursor sols require higher temperatures. Additionally, the non-homogeneous Al2O3-SiO2 precursor sol is more likely to generate mullite (3Al2O3:2SiO2) with an orthogonal structure. The prepared alumina-mullite fibers have a tensile strength of up to 1.68 GPa. The mechanism of the influence of silica sol properties on the final organization of alumina-mullite fibers is further discussed.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Engineering, Chemical
Akira Miwano, Takehiro Yonezawa, Noriko Yamauchi, Kouichi Nakashima, Yoshio Kobayashi
Summary: The study suggests a new coating technique for thermistors using zirconia, which shows excellent chemical resistance and electrical insulation properties. Pre-silica coating on the substrate can improve the adhesion of ZrO2 films.
Article
Energy & Fuels
Bhusankar Talluri, M. L. Aparna, N. Sreenivasulu, S. S. Bhattacharya, Tiju Thomas
Summary: The study synthesized a supercapacitor electrode material based on high entropy spinel oxides (HEO), showing excellent electrochemical energy storage properties including high capacitance, good rate capability, and cycling stability. Additionally, this study opens up possibilities for further exploration of other HEO materials.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
N. H. Erdogan, T. Kutlu, N. Sedefoglu, H. Kavak
Summary: Undoped ZnO films and Na-doped ZnO films with different Na/Zn molar ratios were deposited on glass substrates by the sol-gel spin coating method. Sodium doping significantly influenced the structure and properties of the films, resulting in different electrical conductivity and optical characteristics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Biotechnology & Applied Microbiology
Joice Sophia Ponraj, Muniraj Vignesh Narayanan, Ranjith Kumar Dharman, Valanarasu Santiyagu, Ramalingam Gopal, Joao Gaspar
Summary: The importance of green synthesis in the energy application sector is highlighted, with a focus on 2D materials like graphene, MoS2, and VS2. Recent reports emphasize the role of these materials in energy storage and conversion devices. Future developments are expected to focus more on research into 2D elemental materials.
CURRENT NANOSCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Sundaraj Rajamanikandan, Muniyandi Biruntha, Gopal Ramalingam
Summary: In this study, Carbon Quantum Dots (CQDs) were synthesized from pineapple agro-waste using hydrothermal treatment, showing small particle size and strong blue fluorescence properties. The CQDs exhibited potential antioxidant activities and may have applications in optical switching devices.
JOURNAL OF CLUSTER SCIENCE
(2022)
Article
Energy & Fuels
S. Asaithambi, P. Sakthivel, M. Karuppaiah, R. Yuvakkumar, K. Balamurugan, Tansir Ahamad, M. A. Majeed Khan, G. Ramalingam, Mustafa K. A. Mohammed, G. Ravi
Summary: The study presents an Fe-SnO2@CeO2 electrode with enhanced specific capacitance and cycle stability for supercapacitor applications. The Fe-SnO2@CeO2 nanocomposite exhibits excellent electrochemical performance in a three-electrode system, making it a promising alternative electrode material for high energy storage supercapacitors.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Nanoscience & Nanotechnology
G. Ramalingam, C. Ragupathi, Baskaran Rangasamy, I. Colak, V. Vetrivelan, Neda Poudineh, Balasubramani Ravindran, Soon Woong Chang, Robert M. Gengan
Summary: A simple hydrothermal method is developed for synthesizing high-quality CdSe/CdTe core-shell quantum dots. The synthesized quantum dots show uniform distribution, small grain size, and excellent photoluminescence (PL) emission properties, making them suitable for photovoltaic applications.
JOURNAL OF NANOMATERIALS
(2022)
Article
Nanoscience & Nanotechnology
V. Uma Maheshwari Nallal, M. Razia, Ozlem Ates Duru, G. Ramalingam, Sasikala Chinnappan, Murugesan Chandrasekaran, R. M. Gengan, Woo Jin Chung, Soon Woong Chang, Balasubramani Ravindran
Summary: Antimicrobial resistance is a global health challenge, and the presence of large amounts of biocides in the environment worsens antifungal resistance and environmental contamination. This study focuses on developing eco-friendly antifungal agents using Allium sativum extract to produce silver nanoparticles (AgNPs). The AgNPs exhibited antioxidant and antifungal activities, showing potential as a green resource to combat antibiotic resistance and reduce environmental contamination.
JOURNAL OF NANOMATERIALS
(2022)
Article
Materials Science, Multidisciplinary
K. Indumathi, S. Tamilselvan, L. Rajasekaran, A. Duke John David, G. Shakil Muhammad, G. Ramalingam, M. Biruntha
Summary: The research focuses on a series of Sr3Gd(1-x)[PO4](3:x)Eu3+ phosphors, revealing their efficient excitation by ultraviolet visible light leading to red emission, high fluorescence lifetime, and significant CIE value, making them suitable for near-ultraviolet white light-emitting LEDs.
Article
Chemistry, Physical
Sanket Sen, S. Mandal, Arnab Sen, R. Gopal, L. Ben Ltaief, S. Turchini, D. Catone, N. Zema, M. Coreno, R. Richter, M. Mudrich, S. R. Krishnan, V Sharma
Summary: This study investigates the fragmentation dynamics of the gas-phase, doubly charged camphor molecule formed by Auger decay after carbon 1s ionisation using soft X-ray synchrotron radiation. Combining experimental study with molecular dynamics simulation, the research validates the observed dissociation pathways and reveals the significant contribution of the internal energy of the doubly charged molecular ion to the fragmentation mechanism.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Electrochemistry
S. Vijayanath, K. Janaki, Ramalingam Gopal, C. Ragupathi, Baskaran Rangasamy, Mohammed Mujahid Alam
Summary: A novel cost-effective and efficient configuration of dye-sensitized solar cell (DSSC) with zinc oxide-multi-walled carbon nanotube (ZnO-MWCNT) composite has been constructed in this study. The results demonstrate that the composite material exhibits high photoconversion efficiency and catalytic activity, and inhibits the recombination of electron-hole pairs.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
P. Sankudevan, R. V. Sakthivel, K. Poonkodi, Gopal Ramalingam, C. Raghupathi, Mohammed Mujahid Alam, Baskaran Rangasamy
Summary: Nanocrystalline ZnCr2O4 has been synthesized successfully using microwave-assisted solution combustion method, and its properties have been characterized. The choice of fuel precursors in the combustion technique has an impact on the particle size, bandgap energy, magnetic properties, and reaction time of ZnCr2O4 preparation. The tuning effect of optical and magnetic properties of ZnCr2O4 by using various fuel precursors is significant.
JOURNAL OF NANOMATERIALS
(2023)
Article
Materials Science, Multidisciplinary
P. Sankudevan, R. V. Sakthivel, Ramalingam Gopal, C. Raghupathi, S. Ambika, Mohammed Mujahid Alam, Baskaran Rangasamy
Summary: This study evaluates the effects of Mn doping and particle size reduction on the catalytic and photocatalytic degradation performance of zinc chromite. The results show that the Mn-doped samples exhibit superior catalytic performance in the production of benzaldehyde and carbonyl compounds compared to the pristine samples, and the catalyst achieves excellent photocatalytic degradation efficiency for methylene blue under UV irradiation.
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
B. Arjun Kumar, Thangavel Elangovan, Dharmalingam Karthigaimuthu, D. Aravinth, Gopal Ramalingam, Fen Ran, Sambasivam Sangaraju
Summary: In this study, a CdSe quantum dots-decorated ternary metal oxide nanocomposite of ZnO/TiO2/CuO was synthesized via a simple hydrothermal method. The nanocomposite exhibited promising performance as photoanodes in DSSCs and as photocatalysts for industrial dye solution. The CdSe@CuO/TiO2/ZnO sample showed a photon conversion efficiency of 3.68% in DSSC and a photocatalytic degradation efficiency of 96%.
Article
Engineering, Electrical & Electronic
Satya Prasanna Mallick, K. S. Adithya, Ratul Sabui, Balu Babu Naidu, Ranjeet Singh, Harish Babu, Gajula Jagadeesh, K. M. Venkata Amaresh, Ram Gopal, Vandana Sharma
Summary: We propose a novel approach to whole slide imaging (WSI) using a low-cost, portable, fully enclosed scanner device that can be controlled wirelessly through an intuitive user interface on an iPad. The device incorporates features such as automatic slide loading, brightness control, and an autofocus algorithm.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Materials Science, Multidisciplinary
B. Arjun Kumar, P. Subalakshmi, Mohammed Mujahid Alam, Gopal Ramalingam, Sambasivam Sangaraju
Summary: This research focuses on the development of simple and low-cost white emission films by synthesizing tungsten disulfide quantum dots (WS2 QDs) and incorporating them into a Polyvinyl Alcohol (PVA) film. The stacked film shows white light emission and can be a feasible strategy for lab-scale development of white emission LEDs.
Article
Optics
Arnab Sen, Abhisek Sinha, Sanket Sen, V Sharma, R. Gopal
Summary: This study used a reaction microscope to measure the momentum of ionized photoions and photoelectrons from the interaction of Ar atoms with laser pulses carrying orbital angular momentum (OAM). The results show no evidence of angular momentum transfer from light to electrons.
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)