Article
Chemistry, Physical
Ziming Cao, Panpan Zhou, Xuezhang Xiao, Liujun Zhan, Zhinian Li, Shumao Wang, Lixin Chen
Summary: The Ti-Zr-Cr-Fe-V alloys with different compositions exhibit good hydrogen storage properties at moderate working temperatures. Increasing the V content is beneficial for activation kinetics and higher hydrogen storage capacity, but it reduces plateau pressure and increases plateau slope factor. The Zr and Fe content in the alloys also significantly affect hydrogen storage properties.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Ziming Cao, Panpan Zhou, Xuezhang Xiao, Liujun Zhan, Zhifei Jiang, Mingyuan Piao, Shumao Wang, Lijun Jiang, Lixin Chen
Summary: This study systematically investigated the hydrogen storage performance of different alloys under moderate thermal conditions, showing that an increase in Fe or Ti content can lead to a higher hydrogen plateau pressure but a slight decrease in hydrogen storage capacity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Panpan Zhou, Ziming Cao, Xuezhang Xiao, Zhifei Jiang, Liujun Zhan, Zhinian Li, Lijun Jiang, Lixin Chen
Summary: In this study, Ti-based Laves phase alloys were prepared using induction levitation melting to investigate their microstructure and hydrogen storage properties. It was found that introducing Ti hyper-stoichiometry can improve hydrogen storage performance, with Ti0.93+wZr0.07Mn1.15Cr0.7V0.15 alloy showing the best performance with reduced hydrogen equilibrium pressure, high hydrogen capacity, and enhanced kinetics. This study provides guidance for compositional design of high-density hydrogen storage multi-component alloys.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Bing Tu, Hui Wang, Yin Wang, Rui Li, Liuzhang Ouyang, Renheng Tang
Summary: In this work, Ti-Zr-Cr-based AB(2)-type Ti-based alloys with progressive Mn, Ni, and V substitutions were developed for reversible hydrogen storage under ambient conditions. The optimized alloy (Ti0.8Zr0.2)(1.1)Mn1.2Cr0.55Ni0.2V0.05 exhibited good hydrogen storage performance, making it suitable for use in hybrid hydrogen tank of fuel cell bicycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Abhishek Kumar, Thakur Prasad Yadav, Nilay Krishna Mukhopadhyay
Summary: In this study, the synthesis, structure, and hydrogen storage behavior of a high-entropy Ti-Zr-V-Cr-Ni equiatomic intermetallic alloy were investigated. The alloy exhibited reversible and stable hydrogen storage capacity, demonstrating the potential for developing high-entropy intermetallic materials for hydrogen storage.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Physical
Leandro Serrano, Maria Moussa, Jie-Yi Yao, Gilbert Silva, Jean -Louis Bobet, Sydney Ferreira Santos, Katia Regina Cardoso
Summary: The development of novel high entropy alloys (HEA) of the TiVNbCrMn system for hydrogen storage is reported. The CALPHAD method was used to design alloys with a body centered cubic structures. Hydrogen absorption/desorption cycles were performed for two alloys showing promising results since the maximum capacity of the alloys has been maintained despite a reduction in absorption kinetics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jussara Barale, Jose Ramon Ares, Paola Rizzi, Marcello Baricco, Jose Francisco Fernandez Rios
Summary: To replace mechanical compressors in hydrogen infrastructures, new compositions are needed to achieve a pressure of 700 bar. This study synthesized and characterized Ti1.1(Cr,Mn,V)2 and Ti1.1(Cr,Mn,V,Fe)2 compositions based on Laves (C14) intermetallic compounds, which show increased plateau pressure and hysteresis gap due to the substitution of Cr with Mn and Fe. These alloys have suitable thermodynamics for high-pressure hydrogen compression, easy activation at room temperature, and fast reaction rates. The most promising composition, Ti1.1Cr0.9Mn0.8V0.1Fe0.2, is estimated to release hydrogen at 700 bar and 150 degrees C. The integration of these alloys in a metal hydride compressor is evaluated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Ziming Cao, Mingyuan Piao, Xuezhang Xiao, Liujun Zhan, Panpan Zhou, Zhinian Li, Shumao Wang, Lijun Jiang, Fen Xu, Lixian Sun, Lixin Chen
Summary: In this study, three series of alloys were prepared and their crystal structural characteristics and hydrogen storage properties were investigated. The results showed that a single C14-Laves phase with homogeneous element distribution existed in all alloys. The hydrogen absorption/desorption plateau of the alloys increased as the Fe, Mn, or Ti content increased. The hydrogen storage capacity of the alloys also correlated negatively with the hydrogen affinity of interstitial sites. Ti0.935Zr0.085Cr1.3Mn0.3Fe0.4 alloy exhibited saturated hydrogenation under 8 MPa at 293 K and dehydrogenation around 24.91 MPa pressure at 363 K with a hydrogen capacity of 1.74 wt%, as well as excellent cycling performance and mere hysteresis. Ti0.92Zr0.10Cr1.0Mn0.6Fe0.4 alloy showed promising hydrogen capacity of 1.86 wt% at 283 K and a dehydrogenation pressure of 27.94 MPa at 363 K, along with satisfactory cycling durability. This study can guide the compositional design of AB2-type hydrogen storage alloys for hydrogen compression application.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Huang Liu, Jingxi Zhang, Chengshang Zhou, Pei Sun, Yong Liu, Zhigang Zak Fang
Summary: This paper investigates the effect of Nb alloying on the microstructure and hydrogen storage properties of Ti-Fe-Zr-Mn-Nbx alloys. The addition of 2% Nb enables a good combination of the hydrogen capacity and activation property, while Zr-rich phases play a critical role in the activation behavior. However, high Nb addition (> 4%) leads to the reduction of Zr-rich phases and deteriorates the activation kinetics. Nb addition also promotes the formation of the TiFe main phase and increases capacities at ambient temperature. The correlations between microstructure and hydrogen storage performance provide insights into tailoring hydrogen storage properties by alloying TiFe with multi-elements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Yongyang Zhu, Xubo Li, Xu-Sheng Yang, Pengyun Chen, Gary Chi-Pong Tsui, Zheng-Long Xu, Renheng Tang, Fangming Xiao, Kangcheung Chan
Summary: Researchers have developed a low-cost BCC solid solution alloy with excellent activation performance and high effective hydrogen desorption capacity by using a new compositionally complex doping strategy. The synergistic effect of Nb, Fe, Co, Ni, and Mn elements has been confirmed to improve hydrogen storage performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Mingyuan Piao, Xuezhang Xiao, Ziming Cao, Panpan Zhou, Liujun Zhan, Jiacheng Qi, Zhinian Li, Lijun Jiang, Lixin Chen
Summary: In this study, low-cost Ti0.95Zr0.07Cr1.7-xMn0.3Fex (x = 0-0.5) alloys were designed and prepared to achieve hydrogen compression at 8-22 MPa under mild conditions. The effect of Fe substitution for Cr on the microstructure and hydrogen storage properties of the alloys was investigated, and an optimal alloy, Ti0.95Zr0.07Cr1.3Mn0.3Fe0.4, was proposed and experimentally proved to exhibit the best overall performances. This study provides comprehensive insights into the design and application of low-cost hydrogen storage alloys.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Toshiaki Fukagawa, Yasuyuki Saito, Akihiro Matsuyama
Summary: The study found that with an increase in x value, the secondary phase of HEAs increased, resulting in lower hydrogen storage capacity and unstable hydrides. After alkaline treatment, the HEA alloy surface changed, leading to increased discharge capacity, enhanced high-rate dischargeability, and cycle performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Yichang Wang, Lingfei Cao, Xiaodong Wu, Xiaomin Lin, Tianyu Yao, Liming Peng
Summary: In this study, the effects of minor Ti, Mn, Cr, Zr, and Er additions on cast Al-Zn-Mg-Cu alloys were investigated. The addition of Ti significantly refines the ingot grains, while Mn and Cr additions reduce impurities and form specific phases. The joint addition of Ti, Mn, Cr, Zr, and Er creates a bulk composite phase. The alloy with the joint addition of these elements exhibits the highest hardness due to collaborative strengthening effects.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Yuanfang Wu, Wang Zhao, Lijun Jiang, Zhinian Li, Xiumei Guo, Jianhua Ye, Baolong Yuan, Shumao Wang, Lei Hao
Summary: V-based hydrogen storage alloys are considered promising materials for high hydrogen capacity under ambient conditions. The addition of Fe or Al affects the hydrogen storage capacity and desorption plateau pressure. The relationship between lattice parameters, electron density, and hydrogen capacity is discussed. The optimized 75 V-Ti-15Cr-1Al-1Fe alloy shows high hydrogen storage capacity, pressure, and excellent cyclic performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Bruno Hessel Silva, Walter Jose Botta, Guilherme Zepon
Summary: Computational thermodynamic tools were used to design Ti-V-Nb-Cr alloys with good hydrogen storage properties. The phase diagram calculation and PCT diagram analysis helped identify suitable compositions. The synthesized alloys showed high hydrogen absorption capacity at room temperature without activation treatment. The Ti11V30Nb28Cr31 alloy exhibited good reversibility and stability, as demonstrated by cycling experiments and air exposure tests.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Jiacheng Qi, Zhaoqing Liang, Xuezhang Xiao, Zhendong Yao, Panpan Zhou, Ruhong Li, Xinyi Zhang, Huaqin Kou, Wenhua Luo, Changan Chen, Lixin Chen
Summary: A single isostructural phase transition with high thermal stability and structural stability is achieved in the ZrCo-H system by multicomponent substitution for the first time. The Zr0.8Nb0.2Co0.6Cu0.15Ni0.25 alloy exhibits high thermal stability and low desorption temperature at 100 kPa, resulting in improved cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Panpan Zhou, Ziming Cao, Xuezhang Xiao, Liujun Zhan, Jiahuan He, Yuyuan Zhao, Li Wang, Mi Yan, Zhinian Li, Lixin Chen
Summary: This study evaluates the potential application of AB5 and AB2 alloys in hydrogen storage technology. La0.45Ce0.35Ca0.2Ni5 alloy exhibits excellent volumetric capacity (126.65 kg H2/m3), while Ti0.88Zr0.12Mn1.2Cr0.6V0.2 alloy performs better in gravimetric capacity (1.67 wt% H2). Both alloys have the potential to be qualified candidates for hydrogen feeding systems.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Ziming Cao, Mingyuan Piao, Xuezhang Xiao, Liujun Zhan, Panpan Zhou, Zhinian Li, Shumao Wang, Lijun Jiang, Fen Xu, Lixian Sun, Lixin Chen
Summary: In this study, three series of alloys were prepared and their crystal structural characteristics and hydrogen storage properties were investigated. The results showed that a single C14-Laves phase with homogeneous element distribution existed in all alloys. The hydrogen absorption/desorption plateau of the alloys increased as the Fe, Mn, or Ti content increased. The hydrogen storage capacity of the alloys also correlated negatively with the hydrogen affinity of interstitial sites. Ti0.935Zr0.085Cr1.3Mn0.3Fe0.4 alloy exhibited saturated hydrogenation under 8 MPa at 293 K and dehydrogenation around 24.91 MPa pressure at 363 K with a hydrogen capacity of 1.74 wt%, as well as excellent cycling performance and mere hysteresis. Ti0.92Zr0.10Cr1.0Mn0.6Fe0.4 alloy showed promising hydrogen capacity of 1.86 wt% at 283 K and a dehydrogenation pressure of 27.94 MPa at 363 K, along with satisfactory cycling durability. This study can guide the compositional design of AB2-type hydrogen storage alloys for hydrogen compression application.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
Yuming Wang, Panpan Zhou, Weicheng Zhou, Shun Huang, Chengrong Peng, Dunhai Li, Genbao Li
Summary: The epiphytic bacterial communities on Cladophora in Qinghai Lake were different in different life stages. Chemoheterotrophic and aerobic microorganisms were enriched in the attached stage, phototrophic bacteria were more abundant in the floating stage, and a variety of bacteria showed vertical heterogeneity in the decomposing stage. Sulfur cycle-associated bacteria played an important role in the development of Cladophora.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Chemistry, Physical
Linlin Chen, Zhi Chen, Li Chen, Panpan Zhou, Jing Wang, Huiyong Yang, Zhijun Feng, Xibao Li, Juntong Huang
Summary: MoS2@C nanosheets are obtained by a three-roller grinder, where the bulk MoS2 can be thinned and a carbon layer can be formed on the surface. As the anode for KIBs, the MoS2@C electrode exhibits highly reversible discharge capacity of 382 mAh/g at 0.1 A/g after 50 cycles. This efficient preparation method opens a new path for high-performance K+ storage applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Bernadeta Dadonaite, Katharine H. D. Crawford, Caelan E. Radford, Ariana G. Farrell, Timothy C. Yu, William W. Hannon, Panpan Zhou, Raiees Andrabi, Dennis R. Burton, Lihong Liu, David D. Ho, Helen Y. Chu, Richard A. Neher, Jesse D. Bloom
Summary: This study describes a deep mutational scanning platform to understand the impact of emerging mutations in the spike protein of SARS-CoV-2 on antibody neutralization and pseudovirus infection. The platform can be extended to study entry proteins of other viruses.
Article
Chemistry, Multidisciplinary
Yunping Zhoujin, Yuping Li, Peng-Yu Liang, Pan-Pan Zhou, Sean Parkin, Tonglei Li, Faquan Yu, Sihui Long
Summary: We synthesized a series of phenylalkylamino-nicotinic acids (1-4) by altering the linker length between the pyridine and benzene rings, and investigated their polymorphism. Compound 1 and 2 had one crystal form, compound 3 had three forms, and compound 4 had two forms under the same crystallization conditions. Conformational analysis revealed that the polymorphism of 3 and 4 was caused by the anti and/or gauche conformation of specific sigma bonds within them. However, there was no correlation between the number of polymorphs and sigma bonds, and the rotation of which sigma bond(s) was responsible for the polymorphism could not be predicted. Phase behavior studies by DSC showed a phase transition from 4-I to 4 II with a change in asymmetric unit. Computational studies including Hirshfeld surface analysis and IGM analyses were performed to determine the significant intermolecular interactions in the crystals.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Mingyuan Piao, Xuezhang Xiao, Ziming Cao, Panpan Zhou, Liujun Zhan, Jiacheng Qi, Zhinian Li, Lijun Jiang, Lixin Chen
Summary: In this study, low-cost Ti0.95Zr0.07Cr1.7-xMn0.3Fex (x = 0-0.5) alloys were designed and prepared to achieve hydrogen compression at 8-22 MPa under mild conditions. The effect of Fe substitution for Cr on the microstructure and hydrogen storage properties of the alloys was investigated, and an optimal alloy, Ti0.95Zr0.07Cr1.3Mn0.3Fe0.4, was proposed and experimentally proved to exhibit the best overall performances. This study provides comprehensive insights into the design and application of low-cost hydrogen storage alloys.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Duo Feng, Panpan Zhou, Dongyan Wang, Pu Shi
Summary: This study aimed to reconstruct the ecological restoration pattern by establishing an ecosystem health assessment model and identified four restoration zones in a black soil region. The results provide insights into ecosystem health and can guide restoration efforts in similar regions.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Environmental
Jiahuan He, Panpan Zhou, Xuezhang Xiao, Fei Chu, Liuzhang Ouyang, Baozhong Liu, Ruhong Li, Ziwei Huang, Leijie Hu, Sicheng Yuan, Tao Zhou, Xiulin Fan, Lixin Chen
Summary: In this study, a self-supported sphere architecture of Co3Mo IMC with ping-pong chrysanthemum shape was achieved and applied in the catalytic hydrogen generation from ammonia borane. The catalyst showed remarkable catalytic performance and cycle stability, indicating its potential applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biodiversity Conservation
Hanqing Tang, Keke Niu, Panpan Zhou, Yanbing Gong, Can Dai
Summary: Habitat fragmentation and population declines lead to increased population edges. This study found that edge plants have longer pollination distances and enjoy higher reproductive success compared to interior plants. These results indicate that edge effects play an important role in promoting gene exchange and population recovery.
GLOBAL ECOLOGY AND CONSERVATION
(2023)
Article
Polymer Science
Jie-Wei Wong, Xuxu Yang, Qian Zhao, Yaoting Xue, Tow-Jie Lok, Li Wang, Xiulin Fan, Xuezhang Xiao, Tuck-Whye Wong, Tiefeng Li, Lixin Chen, Ahmad Fauzi Ismail
Summary: This study presents a sustainable approach to synthesize a semicrystalline polymer using biomass-derivable precursors via catalyst-free polyesterification. The synthesized biodegradable polymer, PODDC, exhibits excellent shape-memory properties with good shape fixity and shape recovery ratios of 98%, along with a large reversible actuation strain of 28%. The mild polymerization without the use of a catalyst enables the reconfiguration of the partially cured two-dimensional film to a three-dimensional geometric form in the middle process.
Article
Chemistry, Physical
Panpan Zhou, Jianwei Zhang, Jiapeng Bi, Xuezhang Xiao, Ziming Cao, Liujun Zhan, Huahai Shen, Miao Lu, Zhinian Li, Yuyuan Zhao, Li Wang, Mi Yan, Lixin Chen
Summary: Through the study of Ce-rich metal hydrides, the factors leading to mega pressure hysteresis were identified, and composition engineering was proposed as an effective method to alleviate this phenomenon.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Bo Han, Yuxiao Jia, Jianchuan Wang, Xuezhang Xiao, Lixin Chen, Lixian Sun, Yong Du
Summary: In this work, the structural and kinetic properties of pure and Ti-doped Mg(0001)/MgH2(110) interfaces were studied using first principles methods. It is found that Ti doping can improve the stability of the interface, promote hydrogen atom migration, and enhance the hydrogen desorption process mainly within the interface.
JOURNAL OF MATERIALS CHEMISTRY A
(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)