Article
Chemistry, Physical
Haohui Li, Panpan Jing, Chenpu He, Zhixuan Pan, Jiale Liu, Yongfei Cui, Jenghan Wang
Summary: An all-solid-state Z-scheme heterojunction of BaTiO3/Bi/Bi2O3 was prepared through a facile route of hydrothermal and heat treatment. It exhibited a conspicuous light response and efficient photo-excited carrier kinetics, leading to stable and ultrahigh photocatalytic activity for removing tetracycline antibiotics in contaminated water. The metallic Bi at the interlayer played a critical role in enhancing the structural stability, improving the light response, and facilitating the Z-scheme transfer of photo-excited carriers under an interfacial built-in electronic field.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Dongyu Tan, Fei Huang, Shenjia Guo, Danqin Li, Yi Yan, Wu Zhang
Summary: A series of Z-scheme heterojunction g-C3N4/Bi5O7I composites were successfully synthesized using an electrostatic self-assembly method. The optimized 15%-g-C3N4/Bi5O7I exhibited efficient degradation of tetracycline under visible light irradiation, attributed to the generation of photo-induced h+ and O2•- radicals. The migration of photo-induced h+ and e- between g-C3N4 and Bi5O7I was investigated, and the degradation pathways and toxicological simulation of tetracycline were evaluated. The composite also demonstrated good stability and reusability, making it a promising photocatalyst for practical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Xi Yang, Wenjun Chen, Yan Liu, Yanming Yu, Bo Liang, Jie Hu, Hao Huang
Summary: Photoelectric catalytic oxidation (PEC) is a promising strategy for degrading antibiotic refractory pollutants. In this study, a flower-like Co3O4/CoO catalyst was constructed, and its PEC performance was investigated. The Co3O4/CoO catalyst showed a significantly higher removal rate of tetracycline (TC) compared to pure Co3O4 and CoO due to the establishment of an electric field and the synergistic effect between electrocatalytic and photocatalytic processes.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Dayi Jiao, Fuming Chen, Shaofeng Wang, Yinzhen Wang, Wei Li, Qinyu He
Summary: The study focused on the preparation and characterization of the hybrid SnS2/BaTiO3 photocatalyst, showing significant improvement in the separation and transfer of photogenerated electron-hole pairs with the Z-scheme heterojunction. The composite material also demonstrated great potential in treating organic pollution in wastewater.
Article
Engineering, Environmental
Xun Li, Yue Meng, Jinhua Li, Lianyang Zhang, Bo Xie, Zheming Ni, Shengjie Xia
Summary: In this study, direct Z-Scheme heterojunctions of MoO2@CoFe LDHs were prepared for the activation of Na2S2O8 (PS) to degrade tetracycline under visible light. The synergistic degradation efficiency of tetracycline was significantly enhanced due to the effective electron-hole separation under the Z-Scheme heterostructure. The Co(II) and Fe(II) in the system were found to synergistically activate PS and accelerate its activation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Shun Zheng, Bangfu Ding, Xin Qian, Yanmin Yang, Liang Mao, Shukai Zheng, Junying Zhang
Summary: Thirteen BaTiO3/gamma-Bi2O3 heterojunctions were synthesized and tested for the degradation of tetracycline and rhodamine B, showing high removal efficiencies above 93% for all samples and superior performance in the removal of rhodamine B compared to individual BaTiO3 and gamma-Bi2O3.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yuchan Li, Bin Yu, Zhenqi Hu, Hong Wang
Summary: This study successfully synthesized a highly efficient SnS2@ZnIn2S4@kaolinite (SZK) photocatalyst, which showed significant degradation capability towards tetracycline hydrochloride (TCH). The SZK heterostructure demonstrated enhanced photocatalytic efficiency and degradation rate under visible light illumination, with O-2(-) and O-1(2) identified as the main active species. The superior performance of SZK is attributed to the synergistic effect of its components, providing new insights for visible light photocatalytic degradation of antibiotics in wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yanxia Li, Min Fu, Peng Lu, Xueli Hu, Ruiqi Wang, Jinwu Bai, Youzhou He
Summary: Heterojunction photocatalytic materials, with good photo-generated electron-hole pair separation efficiency, have attracted much attention in the field of pollution control. In this study, unique Z-scheme ZnS/PI photocatalyst was fabricated by in situ growth of ZnS on polyimide (PI), and it exhibited the highest degradation efficiency for tetracycline (TC) under visible light irradiation, attributed to the enhanced charge separation efficiency and reduced electron-hole pair recombination efficiency.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xuemei Yan, Qingjie Ji, Chao Wang, Jixiang Xu, Lei Wang
Summary: Precisely engineering the morphology and regulating the hybrid interface of each component in a heterojunction are crucial for enhancing charge carrier separation. The Z-scheme heterojunction of flower-like bismuth oxycarbonate/bismuth oxybromide prepared in this study exhibited a high photocatalytic activity, attributed to the hybrid mode of BOC and BiOBr, and the Z scheme electron transfer path and oxygen vacancies present in BOC/BiOBr.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Environmental
Jingru Guo, Liping Wang, Xiao Wei, Zeid A. Alothman, Munirah D. Albaqami, Victor Malgras, Yusuke Yamauchi, Yunqing Kang, Meiqi Wang, Weisheng Guan, Xingtao Xu
Summary: The construction of a Z-scheme CuInS2/Bi2MoO6 heterostructure via in-situ hydrothermal reactions resulted in superior photocatalytic activity towards the degradation of tetracycline under visible light, with 8 and 2.5 times improvements compared to their individual components. The enhanced photocatalytic performance is mainly attributed to effective charge transfer at the interface and the ternary sulfide semiconductor absorbing light in the useful region of the solar spectrum.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Jiayin Guo, Longbo Jiang, Jie Liang, Weihua Xu, Hanbo Yu, Jin Zhang, Shujing Ye, Wenle Xing, Xingzhong Yuan
Summary: Tetracycline, a widely used antibiotic, poses risks to the aquatic ecosystem. A novel ternary Z-scheme Bi12O17Cl2/Ag/AgFeO2 exhibited enhanced photocatalytic degradation of tetracycline. Optimal catalyst concentration and pH conditions favored the degradation process, while exogenous anions and organic matter hindered it. O-center dot(2)- played a significant role in tetracycline degradation within the Bi12O17Cl2/Ag/AgFeO2 system.
Article
Engineering, Electrical & Electronic
Min Zhang, Yunyuan Dong, Hongfei Yin, Xiaobin Chen
Summary: CdS/CdSnO3 direct Z-scheme heterojunctions were fabricated through soft-chemistry routes, exhibiting improved photocatalytic performance due to enhanced light absorption and unique charge transfer path. The possible direct Z-scheme photocatalytic mechanism was proposed based on systematic analysis.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Engineering, Environmental
Chong Ouyang, Xinyao Quan, Chunlei Zhang, Yexin Pan, Xiaoyu Li, Zhanglian Hong, Mingjia Zhi
Summary: This study successfully designed and synthesized a direct Z-scheme photocatalyst for efficient degradation of antibiotic contamination. Through the internal Z-scheme charge transfer mechanism, the catalytic activity of the photocatalyst was improved, while possible degradation routes were proposed.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Haiying Du, Yuhao Ma, Xiaoqian Du, Wentao Zhang, Xianfei Chen
Summary: In order to tackle the contamination of organic antibiotics in water environment, a hierarchical structure of 3D/2D CuBi2O4@Bi2O2CO3 (CBO@BOC) was formed by growing Bi2O2CO3 nanosheets on the surface of CuBi2O4 microspheres. The removal efficiency of the as-prepared CBO@BOC composites for tetracycline hydrochloride (TCH) was significantly enhanced due to the synergistic effects of adsorption and photocatalysis. Moreover, the CBO@BOC composite showed excellent removal ability for TCH in various environments and demonstrated good cycling stability. The photocatalytic process involved the utilization of •O2- and h+ as the primary active components to fully oxidize TCH, establishing a Z-scheme heterojunction photocatalysis mechanism.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Jin Luo, Xiaomei Ning, Liang Zhan, Xiaosong Zhou
Summary: The study successfully constructed a AgI/Zn(3)V(2)O(8)Z-scheme photocatalyst, greatly enhancing the photocatalytic activity for tetracycline (TC) degradation, providing a new approach for the design of high-efficiency Zn3V2O8-based Z-scheme heterojunction photocatalysts for the removal of antibiotics from wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Haixing Gao, Shuo Wang, Weng-Chon (Max) Cheong, Kaixi Wang, Huifang Xu, Aijian Huang, Junguo Ma, Jiazhan Li, Weng-Fai (Andy) Ip, Kwan San Hui, Duc Anh Dinh, Xi Fan, Feng Bin, Fuming Chen, Kwun Nam Hui
Summary: Ultrathin nitrogen-doped carbon nanosheets with intrinsic defects were synthesized through the pyrolysis of ZIF-8 with linker vacancies. The as-synthesized electrocatalyst exhibited excellent oxygen reduction reaction (ORR) activity and zinc-air battery performance. The adjacent sp3-carbon was found to enhance the adsorption and activation of oxygen molecules on sp2-carbon, leading to a lower ORR overpotential.
Article
Chemistry, Applied
Yunxiao Tong, Ying Zang, Senda Su, Yinggui Zhang, Junzhuo Fang, Yongqing Yang, Xiaoman Li, Xiang Wu, Fuming Chen, Jianhua Hou, Min Luo
Summary: This study adopts a strategy of designing hybrid cathodes for efficient aqueous zinc-ion batteries. Methylene blue (MB) intercalated vanadium oxide (HVO-MB) is synthesized through sol-gel and ion exchange methods, and it exhibits high specific capacity, high rate capability, and extraordinary stability in 3 M Zn(CF3SO3)2 aqueous electrolyte. The electrochemical kinetics reveal that HVO-MB has large pseudocapacitance charge storage behavior due to fast ion migration provided by coordination reactions and expanded interlayer distance.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Yuting Chang, Lei Gao, Yunlong Xie, Bin You, Yong Liu, Rui Xiong, Junfeng Wang, Chengliang Lu, Jun-Ming Liu
Summary: In this study, the magnetic properties of a single crystal (Fe1-xMnx)2Mo3O8 (0 < x < 1) were investigated through extensive measurements. A detailed magnetic phase diagram was constructed, showing that the antiferromagnetic state dominates for x < 0.25, while the ferrimagnetic phase emerges for x >= 0.3. Notably, a significant spin-induced electric polarization was observed in all samples, regardless of the magnetic state. Samples with a ferrimagnetic state exhibited square-like magnetic hysteresis loops, and the remnant magnetization and coercive field could be drastically adjusted by varying the Mn content or temperature. The remarkable modulation of magnetic properties in the samples is attributed to the possible coexistence of antiferromagnetic and ferrimagnetic phases.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Applied
Xinyu Li, Guangyuan Li, Zhihang Zhang, Wenjing Zhai, Wenhao Zheng, Liufang Chen, Lin Lin, Xiaohui Zhou, Zhibo Yan, J. -M. Liu
Summary: Habituation, a basic form of behavioral plasticity, is important for organisms to adjust their behaviors in response to external stimulation. However, few devices can mimic habituation, which includes opposite responses to the same repeated stimulus. In this study, a device of Au/LiTaO3/Pt was fabricated to demonstrate synaptic plasticity and habituation behavior, which was dependent on stimulus intensity and frequency. The habituation behavior was found to originate from the evolution of conductive domain walls in LiTaO3 ferroelectric.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Y. Liu, T. T. Liu, Z. P. Hou, D. Y. Chen, Z. Fan, M. Zeng, X. B. Lu, X. S. Gao, M. H. Qin, J. -m. Liu
Summary: In this work, a scheme to implement hybrid magnetic skyrmions (HMS) in ferrimagnets is proposed, and the dynamics of HMS driven by spin-orbit torque is studied. It is found that the skyrmion Hall effect can be modulated by tuning the Dzyaloshinskii-Moriya interaction and net angular momentum (d(s)). The Magnus force for finite d(s) enhances the longitudinal propagation and suppresses the transverse motion, resulting in faster dynamics and a decreased Hall angle compared to antiferromagnetic materials. Thus, suitable material selection can suppress the Hall effect and better control the HMS motion. Finally, a convenient skyrmion diversion scheme is proposed through modulating the helicity and Hall angle of the HMS, benefiting the future spintronic device design.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
H. L. Lin, K. L. Yang, Y. Huang, L. Lin, Z. B. Yan, J. -m. Liu
Summary: Although the dynamics of domain growth in ferroic systems have been studied extensively, there are still no realistic systems that strictly follow the scaling laws for two extreme types of defects. However, the ferroelectric hexagonal manganite family provides a unique platform to investigate these scaling laws as it exhibits a topological vortex-antivortex domain structure.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Engineering, Chemical
Kaixiang Shen, Qinyu He, Qiang Ru, Danling Tang, Than Zaw Oo, Mono Zaw, Nyein Wint Lwin, Su Htike Aung, Swee Ching Tan, Fuming Chen
Summary: The lithium resources in seawater are more abundant than on land, which can meet the growing demand for energy storage devices like lithium batteries. The electrochemical method using membranes with advanced lithium-ion selectivity is considered the most potential application. In this study, a flexible LATP/PVDF-HFP composite membrane (FLCM) was prepared using poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) as the flexible framework and Li1.3Al0.3Ti1.7(PO4)3 (LATP) as the lithium ion conductor. The optimized FLCM showed high lithium-ion selectivity and could enrich lithium in diluted seawater up to 5.525 ppm, which is 48.465 times that of commercial cation-exchange membrane (CEM). The work will be significant in solving the challenges of lithium extraction from seawater.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Dafeng Gao, Dayi Jiao, Fuming Chen, Yuheng Liang, Yinzhen Wang, Guannan He, Wei Li, Qinyu He
Summary: In this study, a SnS2/S-doped g-C3N4 composite was prepared using a hydrothermal method. The composite exhibited nano-sized SnS2 particles deposited on Sg-C3N4, forming a Z-scheme photocatalyst. The uneven surface of Sg-C3N4 resulted in a rough surface of the SnS2/Sg-C3N4 composite, enhancing its specific surface area and light absorption. The carrier transfer capability and lifetime of g-C3N4 were improved after S doping, and the rate constant of the composite was greatly increased compared to pure SnS2 and Sg-C3N4.
Article
Chemistry, Physical
Dian Zhang, Jinhong Dai, Mengjun Liang, Minxian Han, Qinyu He, Fuming Chen, Lain-Jong Li
Summary: In this study, an electrolyte-based thermal redox desalination (ETRD) device powered by temperature difference is proposed, which can desalinate seawater while generating electricity. The ETRD device operates at a temperature difference of 60 K and exhibits high performance in terms of power density and salt removal rate. It also demonstrates reusability and stability.
ACS ENERGY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Xin Wang, Jingzhe Zhang, Hui Wang, Mengjun Liang, Qiang Wang, Fuming Chen
Summary: Defect engineering can improve the adsorption and photocatalytic properties of photocatalytic composites for the control of antibiotics and heavy metal combined pollution. The introduction of defects into the TiO2/CN/3DG composite enhances the photocatalytic activity by increasing the contributions from h+ and OH. The defect construction on TiO2 shows advantages in tetracycline degradation and Cu2+ adsorption, while the defect construction on graphene enables the cooperative removal of tetracycline and Cu2+.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xinyi Luo, Dongdong Xu, Chunqiu Zheng, Peng Qiu, Qiwei Wang, Jinwei Gao, Xubing Lu, Xingsen Gao, Lingling Shui, Jun-Ming Liu, Sujuan Wu
Summary: In this study, a piperazine iodide (PI) material with -NH- and -NH2 (+)- bifunctional groups was synthesized and introduced into the PEA(0.1)FA(0.9)SnI(3)-based precursor solution to improve the microstructure, charge transport, and stability of TPSCs. Compared with piperazine (PZ) containing only the -NH- group, the PI additive showed better effects, resulting in an optimal efficiency of 10.33% and higher stability in TPSCs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Applied
Yuting Chang, Bin You, Yunlong Xie, Yong Liu, Rui Xiong, Chengliang Lu, Jun-Ming Liu
Summary: Single crystalline polar magnets (Mn1-xCox)(2)Mo3O8 (0 <= x <= 1) have been synthesized and studied for their magnetic properties. It is found that the magnetic interactions can be significantly modulated by Co-doping, leading to a ferrimagnetic to antiferromagnetic phase transition at x=0.35. For samples with a ferrimagnetic state (0 <= x <= 0.3), square-like magnetic hysteresis loops are commonly observed, and the remnant magnetization and coercive field are strongly influenced by the Co-content and temperature. The occupation ratio and magnetic nature of Co2+ play crucial roles in determining the competition of various magnetic exchange couplings in the samples.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Xiaokun Huang, Yunying Mo, Jinlin Xu, Jiangnan Hu, Xin Nie, Chao Chen, Jiaqian Liu, Xiangping Jiang, Jun-Ming Liu
Summary: With the rapid development of magnetic devices, the demand for magnetic thin films with high stability and flexibility has increased. It has been found that using intercalation of magnetic atoms can transform van der Waals magnets into quasi-van der Waals magnets. Using first-principles calculations, it was discovered that intercalated iron can transform Fe3GeTe2 into quasi-van der Waals magnets, providing alternative building blocks for micro-magnetic devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Environmental
Mengjun Liang, Jiancong Zhang, Xuncai Chen, Mono Zaw, Than Zaw Oo, Nyein Wint Lwin, Su Htike Aung, Yuan Chen, Fuming Chen
Summary: We demonstrate a novel solar-driven redox flow desalination device with double photoelectrodes, achieving efficient desalination without electrical energy consumption. The device consists of three units: a photoanode unit, a photocathode unit, and a redox flow desalination unit. Under light illumination, high-quality freshwater is obtained from brackish water. The device can work in multiple desalination cycles without significant performance declines, opening opportunities for efficient and practical solar-driven desalination processes.
Article
Materials Science, Multidisciplinary
Yuting Chang, Junfeng Wang, Wei Wang, Congbin Liu, Bin You, Meifeng Liu, Shuhan Zheng, Mengyi Shi, Chengliang Lu, Jun-Ming Liu
Summary: We report the discovery of an ultrarobust linear magnetoelectric memory and a significant training effect in a honeycomb antiferromagnet Co4Nb2O9, which can be controlled by magnetic and electric fields. The memory states exhibit distinct linear magnetoelectric coefficients across a wide range of magnetic fields. The evolution of antiferromagnetic domains is believed to be responsible for the versatile memory behaviors observed in multiferroics and other magnetoelectric materials like topological insulators. The compensated antiferromagnetic phase, which is essential for magnetoelectric memory, may enable the integration of unique advantages of antiferromagnetic spintronics such as ultrahigh density and ultrafast switching.
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)
