Article
Materials Science, Multidisciplinary
Jorge L. Dominguez-Arvizu, Jaime A. Jimenez-Miramontes, Blanca C. Hernandez-Majalca, Gabriela E. Valenzuela-Castro, Felipe A. Gaxiola-Cebreros, Jesus M. Salinas-Gutierrez, Virginia Collins-Martinez, Alejandro Lopez-Ortiz
Summary: This study focuses on the synthesis of p-n heterojunctions of NiFe2O4/Cu2O for photocatalytic water splitting. The evaluation of their properties and photocatalytic activity reveals a direct correlation between charge carrier concentration and hydrogen production, suggesting the potential application of these heterojunctions in this field.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Environmental Sciences
Huihui Feng, Yan Zhang, Fengling Cui
Summary: Cuprous oxide (Cu2O), a p-type semiconductor material, has been found to play a significant role in photocatalysis, and enhancing its photocatalytic activity can be effectively achieved by introducing CQDs, leading to improved degradation of methylene blue and antibacterial activity against Escherichia coli.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Chomponoot Suppaso, Tomoki Kanazawa, Shunsuke Nozawa, Kazuhiko Maeda, Nithima Khaorapapong
Summary: Photocatalytic hydrogen production is crucial for efficient energy generation. The development of low cost photocatalysts has gained attention due to the increasing demand for hydrogen energy. In this study, Cu/Cu2O/NiFe-layered double hydroxide was synthesized using a solvothermal method, demonstrating high photocatalytic activity.
Article
Chemistry, Multidisciplinary
Ting Zhu, Bo Wu, Jing Xie, Hongran Yang, Weibin Zhang, Yanyan Sun
Summary: Hierarchical structured p-n heterojunctions consisting of cuprous oxide nanowire cores and CoFe-layered double hydroxide nanosheet shells were constructed. The synergistic effect of light-harvesting ability of Cu2O and the built-in electric field of the Cu2O/CoFe LDH p-n heterojunction promotes efficient separation and transfer of charge carriers, leading to enhanced catalytic activity for water splitting.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Chemical
Abinash Das, Trinayana Deka, P. Mathan Kumar, Muthuraaman Bhagavathiachari, Ranjith G. Nair
Summary: The study focused on the preparation of Ag-ZnO composite at different weight percentages for photoelectrochemical water oxidation and photocatalytic dye degradation. The optimal catalyst showed superior performance due to surface plasmon resonance and synergistic improvement in optical response and charge carrier separation. The inclusion of Ag improved photocatalytic and water oxidation performance by affecting defect concentration and Schottky junction at the metal-metal oxide interface.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Madasamy Thangamuthu, Kiran Vankayala, Lunqiao Xiong, Stuart Conroy, Xiaolei Zhang, Junwang Tang
Summary: The stoichiometric water splitting using a solar-driven Z-scheme approach is a promising solution to the growing demand for renewable energy and environmental concerns. In this study, a robust Z-scheme system was constructed using only tungsten oxides, enabling efficient visible-driven water splitting. The system achieved high H2 and O2 production rates in a neutral solution, with an apparent quantum yield of 6.06% at 420 nm. The selective production of H2 and O2 was attributed to the preferential adsorption of iodide and iodate on the respective photocatalysts. This liquid Z-scheme system, combined with efficient shuttle molecules, offers a safe and separated H2 and O2 evolution process.
Article
Materials Science, Multidisciplinary
N. Liu, S. Zhou, J. Zhao
Summary: The study demonstrates that loading subnanometer p-block metal oxide clusters on 2D porous carbon materials can improve photocatalytic efficiency and provide an effective pathway for manipulating photocatalytic behavior. The research reveals the basic rules for optimizing the relaxation pathway and lifetime of excited carriers, as well as creating bifunctional reaction centers by controlling the concentration and size of oxide clusters.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Physical
I. A. Mkhalid, Ahmed Shawky
Summary: The removal of herbicides from water by photocatalysis is crucial for environmental remediation, and optimizing ecofriendly photocatalysts can enhance efficiency. In this study, Cu2O nanoparticles were synthesized and loaded with Cu nanoparticles to form Cu@Cu2O, achieving complete photodestruction of triazine herbicides by optimizing the Cu content.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
Xuesong Zhao, Yingying You, Yiyang Ma, Chenchen Meng, Zhenghua Zhang
Summary: In this study, Ti3C2/W18O49 photocatalytic membranes were constructed, which showed efficient separation of dyes and could be regenerated under visible light within 120 minutes. W18O49 provided adsorption sites and photocatalytic ability, while Ti3C2 served as an electron trap, improving charge separation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Masresha Tefera, Redeat Fekadu, Fikirte Fikadu Eshete, Daniel Manaye Kabtamu, Minbale Gashu, Aschalew Tadesse, Neway Belachew
Summary: A method of synthesizing visible light active cuprous oxide using prunus cerasifera plant extract has been reported, demonstrating its high efficiency in photocatalytic reduction of hexavalent chromium.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Deepanshu Sharma, Mohd Faraz, Dheeraj Kumar, Devender Takhar, Balaji Birajdar, Neeraj Khare
Summary: In this study, V2O5/rGO nanocomposite was synthesized using a simple hydrothermal method, and its potential for photocatalysis and photoelectrochemical water splitting was validated. Compared to bare V2O5, V2O5/rGO nanocomposite exhibited improved photocatalytic activity and enhanced photoelectrochemical performance.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Min-Kyu Son, Linfeng Pan, Matthew T. Mayer, Anders Hagfeldt, Michael Gratzel, Jingshan Luo
Summary: Cuprous oxide is a promising photocathode material for PEC water splitting, but suffers from poor stability in strong acidic or alkaline conditions. Improvements in performance have been made by introducing nanostructures and catalysts, but further research is needed to establish suitable protection strategies for durable PEC water splitting.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Chemical
Emre Alp
Summary: Photocatalyst materials are crucial in solving environmental issues. The synthesis of well-defined hybrid Cu2O-Cu architecture cubes has shown great potential in dealing with hazardous substances.
Article
Nanoscience & Nanotechnology
Hee Jun Kim, Sung Pyo Park, Won Kyung Min, Dongwoo Kim, Kyungho Park, Hyun Jae Kim
Summary: Introducing an organic interlayer improved the electrical characteristics of Cu2O thin-film transistors by reducing the Schottky barrier height through the formation of electric dipoles. The research successfully demonstrated the fabrication of a complementary inverter based on n-type indium-gallium-zinc oxide and p-type Cu2O TFTs using only Al electrodes, expanding the options for electrode metals in low-cost circuit design for p-type oxide semiconductor-based electronics.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Kaustav Chatterjee, Roberto Dos Reis, Jaye K. Harada, Jette K. Mathiesen, Sandra L. A. Bueno, Kirsten M. O. Jensen, James M. Rondinelli, Vinayak Dravid, Sara E. Skrabalak
Summary: Metal oxychloride intergrowths have been studied as stable visible light photocatalysts, with systematic variation of Ta/Gd molar ratio to rationalize their photocatalytic activity. These intergrowths provide new strategies for designing durable artificial photosynthetic systems.
CHEMISTRY OF MATERIALS
(2021)
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)