Article
Engineering, Chemical
Huan-Zhen Liu, Qiao-Feng Han, Hui-Wei Ding, Hui-Mei Yu, Te-Wei Chiu
Summary: In this study, alpha-Bi2O3/BiOX heterojunctions with optimized microstructure and photocatalytic performance were successfully synthesized via a simple one-step method. The heterojunctions exhibited excellent photocatalytic activity for the degradation of antibiotics and dyes under visible light illumination.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Physical
Housei Akazawa
Summary: Er3+-doped Bi2O3 thin films were deposited under various process conditions and exhibited different luminescence properties. The structure and composition of the films were influenced by deposition temperature and Er content. The presence of SiO2 substrate and post annealing also affected the formation of compound oxides. The emission spectra showed the characteristic peaks of Er3+ luminescence and indicated the active species in the compound oxide.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Dingfu Zhang, Jiaxin Yao, Guiling Wang, Jinling Yin, Kai Zhu, Jun Yan, Dianxue Cao, Min Zhu
Summary: Hydrogen (H-2) plays a key role in promoting a sustainable low-carbon economy and addressing energy security. This study successfully prepared p-Ni x Co9-x S8 catalyst with polyvinylpyrrolidone (PVP) compounds, which exhibited a hierarchical flowerlike nanosheet structure. The p-Ni x Co9-x S8 nanosheets showed outstanding HER performance due to their ultrathin and porous surface, enabling rapid electrolyte injection and providing abundant active sites for H(+) adsorption.
Article
Materials Science, Multidisciplinary
Shairah Gafar, Sib Krishna Ghoshal, Khaidzir Hamzah, Siti Aishah Jupri
Summary: The effects of Dy3+ co-doping on the spectroscopic properties of Sm3+-imbued zinc-sodium tellurite glasses were investigated. The glasses were prepared and characterized, and their XRD and EDX analyses confirmed their amorphous nature and stoichiometric elemental compositions, respectively. The glasses' density and absorption spectra were affected by the increase in Dy3+ contents. The glasses' luminescence spectra exhibited significant peaks and their energy transfer efficiency was analyzed.
Article
Materials Science, Multidisciplinary
Gongjuan Wu, Yan Zhao, Jingzhe Zhao
Summary: Round-cake-like alpha-Bi2O3 hierarchical architectures with nanorod units were successfully prepared through a sodium tartrate-induced aqueous method, showing superior photocatalytic activity in degrading pollutants under visible-light irradiation. The manipulation of final morphologies and good light-harvesting ability contribute to the enhanced photocatalytic performance of the assembled structures. EPR analysis revealed valid active species for the degradation system under neutral circumstances.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Environmental Sciences
Chengzhang Zhu, Qiuying He, Haiqian Yao, Shukun Le, Wenxia Chen, Chuanxiang Chen, Shaobin Wang, Xiaoguang Duan
Summary: The optimized NH2-MIL-125(TH@ZnIn2S4) heterostructure exhibits superior photocatalytic performance in the degradation of tetracycline under visible light, attributed to well-matched energy level positions, strong visible-light-harvesting capacity and abundant coupling interfaces between the two components. The probable degradation mechanism of tetracycline was clarified through active species trapping experiments, inspiring further research in the design and construction of photocatalysts for effective removal of antibiotics in water environments.
ENVIRONMENTAL RESEARCH
(2022)
Review
Chemistry, Physical
Hao Wu, Mingyu Wang, Linwei Huai, Wenxiang Wang, Jiachi Zhang, Yuhua Wang
Summary: This study experimentally demonstrated the feasibility of integrating PSL-based optical storage and optical operation on Lu3Al5O12:Ce3+, showing its suitability for optical storage. It also found that Boolean logic operations, binary operations, and matrix multiplications can be performed based on PSL, solving complex problems.
Article
Materials Science, Multidisciplinary
N. B. Leonov, M. D. Komissarov, P. S. Parfenov, T. A. Vartanyan, V. A. Polishchuk, V. V. Tomaev, A. Koroleva, E. Zhizhin
Summary: The optical absorbance spectra of oxide films do not change with different oxidation temperatures, except at 770°C. XPS analysis revealed the presence of oxygen vacancies at oxidation temperatures higher than 600°C, which are responsible for the visible luminescence at 500nm.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Optics
Anastasiia Kharcheva, Zinaida A. Charyshnikova, Nataliya E. Borisova, Tsagana B. Sumyanova, Oleg K. Farat, Dmitriy A. Kharitonov, Svetlana Patsaeva
Summary: The luminescence characteristics of a new water-soluble europium complex were studied, revealing the existence of different species of the complex in different pH environments. This finding has significant implications for the development of a multimodal pH sensor for aqueous environments.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Ceramics
Yuan-Chang Liang, Yu-Hsun Chou
Summary: A new nanocomposite of ZnO nanowire turf-coated Bi2O3 plates was synthesized using sputtering ZnO seed layer-assisted growth, showing enhanced absorption and photoactive performance compared to pristine Bi2O3 and ZnO. The unique composite morphology and crystallographic phase control led to increased surface area and low recombination rate, improving photoexcited charge separation efficiency for potential photoexcited device applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
M. S. Al-Buriahi, Manal Hessien, Faisal Alresheedi, Ateyyah M. Al-Baradi, Z. A. Alrowaili, Imen Kebaili, I. O. Olarinoye
Summary: This paper synthesized ZnO-Bi2O3 nanocomposites and characterized their optical, structure, and radiation shielding properties. Through analysis of FTIR and UV spectra, the nanocomposites showed promising photon shielding abilities. The materials could potentially enhance the photon shielding competence of existing composite materials.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Yu-Min Shen, Mu-Chien Len, Hsing- Hsiang
Summary: This study used a conventional solid-state reaction method to sinter zinc oxide varistors containing Bi2O3-Sb2O3-Co3O4-Mn3O4-Nb2O5 at low temperatures. The formation of the pyrochlore phase at temperatures of 700 to 900 degrees C affected the densification kinetics. Pre-calcination of Bi2O3 and Sb2O3 at 550 degrees C successfully reduced the formation of the secondary phase Zn2Bi3Sb3O14 and improved the performance of the ZnO-Bi2O3 varistor by lowering its densification temperature.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Multidisciplinary Sciences
Li-Zhe Feng, Jing-Jing Wang, Tao Ma, Yi-Chen Yin, Kuang-Hui Song, Zi-Du Li, Man-Man Zhou, Shan Jin, Taotao Zhuang, Feng-Jia Fan, Man-Zhou Zhu, Hong-Bin Yao
Summary: In this study, the authors demonstrate the transfer of chirality from nanoscale copper iodide clusters to microscale chiral luminescent polycrystals by non-classical crystallization, achieving efficient circularly polarized luminescence. The designed biomimetic non-classical crystallization strategy provides a simple, reliable, and large-scale synthetic route for preparing bright circularly polarized phosphors.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Shuoping Ding, Tianao Dong, Tim Peppel, Norbert Steinfeldt, Juncheng Hu, Jennifer Strunk
Summary: Porous hierarchical microspheres composed of amorphous SiO2 and crystalline beta-Bi2O3 were synthesized via a solvothermal process and subsequent calcination, with amorphous SiO2 contributing to enhanced thermostability of beta-Bi2O3. Photocatalytic activity of the synthesized samples was found to be significantly influenced by phase composition and morphology, with samples containing highly crystalline beta-Bi2O3 phase exhibiting optimal performance in tetracycline hydrochloride degradation under visible light irradiation at low catalyst dosage. The synergistic effect of porous structure, light absorption capability, and charge carrier separation efficiency were identified as key factors contributing to the samples' photocatalytic activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
M. Pooladi, M. M. Zerafat
Summary: In this study, the growth mechanisms for different structures of Bi2O3 nanostructures were determined, and their electrochemical performance was evaluated. The 3D structure consisting of tetrahedrons exhibited the best electrochemical performance, with a specific capacity of 558 F/g and good chemical stability after 6000 cycles. An asymmetric supercapacitor using this 3D structure as the negative electrode showed high energy density and power, as well as cycling stability of 94.9% after 6000 cycles. Additionally, the device could illuminate light-emitting diodes for 25 minutes, suggesting its potential as an alternative for electrical energy storage.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
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)