Article
Chemistry, Physical
Kuilin Lv, Detian Wan, Dezhi Zheng, Yushan Qin, Yuguang Lv
Summary: In this study, different amounts of polypyrrole modified BiVO4 photocatalyst were synthesized, and the optimal doping amount of 5% showed the highest photocatalytic activity. The mechanism of enhanced activity was discussed, with photogenerated holes transferring to the pi orbital of PPy and electrons transferring to the conduction band of BiVO4 for effective charge separation and stabilization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jia Yang, Pengfei Jiang, Xiaorui Sun, Sheng Tian, Wei Tian, Huisheng Huang, Jianwei Shi
Summary: In this study, a three-component composite 2Au@1%-ZFO/CN was designed and demonstrated to be an efficient photocatalyst for H2 evolution in triethanolamine aqueous solution under visible-light. The composite was composed of ZnFe2O4 and C3N4 as the main components, with Au nanoparticles acting as active sites and electronic channels. The optimized sample exhibited significantly enhanced H2 evolution rates compared to the unloaded sample, with a visible-light photocatalytic performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Hongbiao Wen, Zezhen Pan, Xingxing Wang, Kejian Li, Qihuang Wang, Jinming Luo, Hongbo Fu, Liwu Zhang, Zimeng Wang
Summary: Despite extensive research on semiconductor photocatalysis, the fundamental aquatic chemistry of these new materials and their environmental implications are poorly understood. In this study, the solubility of BiVO4 and its non-stoichiometric dissolution in different pH ranges were investigated. The solubility and stability of BiVO4 were found to be pH-dependent, with the lowest solubility and highest stability near pH 5. Illumination significantly enhanced the dissolution of BiVO4. Adsorption of dissolved bismuth by BiVO4 solids was identified as the main reason for the non-stoichiometric dissolution. These findings highlight the importance of considering the dissolution of photocatalysts and provide a method to evaluate the environmental stability and risks of other semiconductor materials.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Swaminathan Arumugam, Thirugnanam Bavani, Mani Preeyanghaa, Saleh O. Alaswad, Bernaurdshaw Neppolian, Jagannathan Madhavan, Sepperumal Murugesan
Summary: In this study, a novel Ni3V2O8/BiVO4 nanocomposite was prepared by one-pot hydrothermal method and investigated for its photocatalytic performance. The nanocomposite exhibited high degradation efficiency and stability towards AO7.
Article
Environmental Sciences
Zhanghao Chen, Na Mi, Liuqing Huang, Wenran Wang, Chen Li, Ying Teng, Cheng Gu
Summary: The study successfully synthesized a snow-like BiVO4 with rich oxygen vacancy by adjusting the surfactant, which significantly improved the separation efficiency of photo-generated carriers, and subsequently enhanced the photodegradation of CIP. The main active species contributing to CIP degradation were identified as photogenerated holes and center dot O2-, and a proposed transformation pathway for CIP was established based on the identified products.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Physical
Yekun Ji, Ye Zhou, Jinnan Wang, Aimin Li, Weilin Bian, Philippe Francois-Xavier Corvini
Summary: A visible-light-Fenton-like reaction system was developed for the selective conversion of peroxymonosulfate to sulfate radical by doping Au@CoS on monoclinic BiVO4 {010} facets. The system enhanced visible-light response and charge separation, promoting the conversion of peroxymonosulfate to sulfate radical. The enhancement of the system was confirmed through various analyses, and in practical wastewater treatment, a high mineralization rate was achieved using CoS-Au-BiVO4 loaded on glass fiber.
Article
Chemistry, Multidisciplinary
Xiaonong Wang, Xiaoxia Li, Jingxiang Low
Summary: Loading plasmonic Au nanoparticles onto BiVO4 inverse opal can enhance the efficiency of photocatalytic water oxidation by improving light utilization and charge carrier utilization. Optimization of the Au-BiVO4 inverse opal structure can achieve high photocurrent density and long photogenerated charge carrier lifetime, resulting in superior photocatalytic activity.
Article
Environmental Sciences
Siva Chidambaram, Mohan Kumar Ganesan, Muthusamy Sivakumar, Saravanan Pandiaraj, Muthumareeswaran Muthuramamoorthy, Santhosh Basavarajappa, Abdulaziz Abdullah Al-Kheraif, M. L. Aruna Kumari, Andrews Nirmala Grace
Summary: The integration of semiconducting nanostructures with noble metal nanoparticles is increasingly favored for cost efficient energy and environmental applications. A facile aqueous synthesis method was reported to produce polymer-capped gold nanoparticles on free-standing 2D layered zinc oxide structures, resulting in ZnO/Au nanocomposites. The study found that the concentration of Au nanoparticles promoted the preferential growth of ZnO along the (002) wurtzite plane, with the resulting structures exhibiting improved absorptivity along the visible spectrum.
Article
Chemistry, Applied
Lizhong Liu, Taiping Hu, Kai Dai, Jinfeng Zhang, Changhao Liang
Summary: A step-scheme BiVO4/Ag3VO4 composite was synthesized for the degradation of methylene blue through a hydrothermal and chemical deposition process. The composite exhibited excellent photocatalytic degradation properties, outperforming BiVO4 and Ag3VO4, with enhanced stability. This improvement in catalytic performance was attributed to its novel step-scheme mechanism facilitating charge separation and increased lifetime.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Inorganic & Nuclear
Kai Huang, Tingting Hu, Yang Wang
Summary: The Novel BiVO4/Zn2SnO4 photocatalyst was prepared by a two-step hydrothermal method, with the optimal mass ratio of Zn2SnO4 to BiVO4 identified as 7wt%. The composite demonstrated significantly improved photocatalytic degradation performance, with h(+) identified as the main active substance, as confirmed through active species trapping experiments and ESR spectroscopy.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Environmental Sciences
Ali Dehdar, Ghorban Asgari, Mostafa Leili, Tayyebeh Madrakian, Abdolmotaleb Seid-mohammadi
Summary: In this study, photodegradation of 4-chlorophenol using a BiVO4/WO3 heterostructure under visible LED light irradiation was investigated. Results showed that it had higher efficiency in 4-CP degradation than other systems, and identified major intermediates of degradation were phenol and chlorobenzene.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Physical
Chien-Yie Tsay, Ching-Yu Chung, Chin-Yi Chen, Yu-Cheng Chang, Chi-Jung Chang, Jerry J. Wu
Summary: Bismuth vanadate (BiVO4), W-doped BiVO4 (BiVO4:W), and Mo-doped BiVO4 (BiVO4:Mo) nanoparticles were synthesized using a green hydrothermal method. The effects of W and Mo doping on the microstructure and optical properties of BiVO4 nanoparticles and their photocatalytic activity for Rhodamine B (RhB) degradation were investigated. The results showed that impurity doping could modify the surface morphology, reduce particle size, and increase the concentration of photogenerated charge carriers, leading to enhanced photocatalytic activity.
Article
Chemistry, Multidisciplinary
Yiyao Zhang, Hongchen Song, Jintai Han, Yunchao Liu, Jing Sun, Tingting Shen, Xikui Wang, Zhen Wang, Weizhen Zhang, Xuerui Yao
Summary: A Bi2WO6/BiVO4 composite photocatalytic material was synthesized and effectively degraded oxytetracycline (OTC) and tetracycline (TC) under visible light. The compositions, structures, chemical states, and optoelectronic properties of Bi2WO6, BiVO4, and Bi2WO6/BiVO4 composites were characterized. The existence of the heterojunction interface facilitates the separation of photogenerated carriers. The degradation efficiency of OTC and TC was significantly improved by the Bi2WO6/BiVO4 composite material.
Article
Biochemistry & Molecular Biology
Biyun Li, Xiaoxiao Gao, Jiangang Qu, Feng Xiong, Hongyun Xuan, Yan Jin, Huihua Yuan
Summary: A photocatalytic antibacterial composite of PDA-rGO/BiVO4 was prepared and showed enhanced bacteriostatic effect against E. coli under light irradiation, indicating potential for expanding the application of BiVO4 in biomedicine.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Wei Jiang, Zhi Li, Chunbo Liu, Dandan Wang, Guosong Yan, Bo Liu, Guangbo Che
Summary: A series of BiOI/MIL-125(Ti) composites were prepared by coupling semiconductor with metal-organic framework via one-step hydrothermal method. The optimized composite showed excellent photocatalytic activity with 80% degradation efficiency for tetracycline and superior stability and reusability in successive catalytic runs. The enhanced photocatalytic activity was attributed to high specific surface area, promoting visible light absorption, and efficient charge transfer of the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(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)