Article
Multidisciplinary Sciences
Sajid Ali Ansari, Nazish Parveen, Mohd Al Saleh Al-Othoum, Mohammad Omaish Ansari
Summary: The energy industry is facing challenges due to high population and energy consumption, and there is a need for effective and efficient supercapacitor devices. The current issues include high production cost, poor cyclic stability, and low energy density. To address these problems, various approaches have been taken, such as developing long-life electrode materials with high capacity. The study focuses on fabricating cost-effective alpha-Co(OH)2 with a unique morphology for application in an aqueous-electrolyte symmetric supercapacitor.
JOURNAL OF ADVANCED RESEARCH
(2023)
Article
Chemistry, Applied
Defa Liu, Bin Sun, Shuojie Bai, Tingting Gao, Guowei Zhou
Summary: Dual Ti3C2 nanosheets/Ag co-catalysts decorated hierarchical flower-like TiO2 microspheres were fabricated for boosting photocatalytic H2 production. The optimal composite showed an excellent photocatalytic H2-production rate, achieving significant improvements compared to pristine TiO2, optimized Ti3C2/TiO2 composite, and Ag/TiO2 composite. The enhanced activity is attributed to the synergistic effect of the hierarchical flower-like structure of TiO2, excellent electrical conductivity of Ti3C2, and surface plasmon resonance effect of Ag.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Electrochemistry
Yunpeng Pan, Lei Tian, Wenfeng Wang, Jiajin Zhao, Yuan Li, Ning Xi, Lu Jian, Shumin Han, Lu Zhang
Summary: Recently, the utilization of Ni/MH batteries has faced challenges such as low capacity and high cost. To overcome the low capacity issue, researchers proposed a method using low-cost and high-capacity spherical alpha-Ni(OH)(2) with NiS nanosheets shell as a conductive network to improve proton diffusion and conductivity. The obtained NiS-coated alpha-Ni(OH)(2) (S-Ni-4) electrode exhibited a high capacity of 369.9 mAh/g at 0.2C and maintained a capacity of 329.2 mAh/g with a retention rate of 89.0% after 200 cycles at 1C, which was 12.5% higher than that of pure alpha-Ni(OH)(2). Additionally, the discharge capacity of the S-Ni-4 electrode reached 254 mAh/g at 5C, surpassing the poor rate discharge ability of pure alpha-Ni(OH)(2). This work sheds light on the development of cobalt-free cathodes with high-performance for large-scale energy storage applications of Ni/MH batteries.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Yongchao Rao, Xiaosi Qi, Qiong Peng, Yanli Chen, Xiu Gong, Ren Xie, Wei Zhong
Summary: This study successfully synthesized flower-like core@shell structure NiO/Ni@C microspheres by carbon thermal reaction, improving their magnetic loss, polarization loss, and conduction loss capabilities and demonstrating superior microwave absorption performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Guocui Cai, Helong Jiang, Fangyi Chu, Xiangcun Li, Xiaobin Jiang, Xiao Wu, Gaohong He, Yan Dai
Summary: By rearranging and optimizing the traditionally disordered nanomaterials, highly ordered nanostructures can be designed to improve their catalytic activity in energy applications. Meanwhile, by designing a porous conductive membrane substrate, the transport of electrons and ions can be enhanced, and more catalytic active sites can be provided, thus improving the performance of batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yan Wang, Yuanyuan Cui, Xiaoning Meng, Zhanying Zhang, Jianliang Cao
Summary: In this study, Ag-modified ZnO flower-like microspheres were prepared and showed promising performance in CO and CH4 gas sensing detection, indicating broad application prospects in the future.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Applied
Megha Sharma, Mark A. Snyder
Summary: This study presents a facile and scalable synthesis method for carbon microspheres with a unique hierarchically structured flower-like morphology. These carbons exhibit high CO2 capacity, attractive CO2/N-2 selectivity, and ease of regeneration. Detailed analysis reveals that the CO2 capacity is strongly correlated with the volume of ultra-micropores, rather than surface area or total pore volume. These materials show promise as efficient and cost-effective CO2 sorbents due to their hierarchical structure, low isosteric heats of adsorption, and easy temperature and pressure-swing-based cyclic regeneration.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Analytical
Jie Hu, Xueqing Xiong, Wangwang Guan, Haizhu Long, Lixiu Zhang, Haihang Wang
Summary: In this article, a novel flower-like WO3-In2O3 hollow heterostructure was successfully constructed and its gas sensing performance was systematically investigated. The results showed that the WO3-In2O3 structure achieved higher sensing performance compared to other sensing materials, attributed to the synergistic effect of its excellent structure and heterojunction configuration. This study provides new insights and strategies for improving the sensing performance of metal oxide semiconductor-based gas sensing materials.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Na Chen, Xue-Feng Pan, Zhen-Jie Guan, Ya-Jing Zhang, Kang-Jun Wang, Jian-Tang Jiang
Summary: This study focuses on the rational design of hierarchical heterogeneous structured Fe3O4 for enhanced electromagnetic wave absorption (EMA). By incorporating TiO2 and SiO2 particles as intercalations anchor in Fe3O4 framework, the composites exhibit excellent EMA performance with enhanced absorption bandwidth and intensity. This work provides a novel pathway for fabricating high-performance EMA absorbers.
APPLIED SURFACE SCIENCE
(2024)
Article
Polymer Science
Yuhan Li, Xiaoli Wang, Jing Xia, Guangwei Zhou, Xiaomu Wang, Dingxuan Wang, Junying Zhang, Jue Cheng, Feng Gao
Summary: Researchers aim to increase the silver ion adsorption capacity of chelate resin, and this study prepared flower-like thiourea-formaldehyde microspheres (FTFM) with enhanced adsorption performance. The nanoflower-like microstructure exhibited a significantly higher specific surface area and silver ion adsorption capacity compared to the control. Kinetic and isotherm studies further supported the superior adsorption ability of FTFM. Due to its high absorption efficiency, convenient preparation, and low cost, FTFM is recommended for industrial applications.
Article
Chemistry, Multidisciplinary
Yanfang Yang, Long Li, Baxi Luosang, Menglin Shao, Xiaoqi Fu
Summary: Flower-like Ni(OH)2 microspheres decorated on porous carbons were successfully fabricated for high-performance supercapacitors. The electrode demonstrated outstanding specific capacitance and retention, with superior electrochemical performances attributed to exposed active sites and improved charge transfer efficiency. This study provides an efficient method for preparing electrochemical materials combining transition metal hydroxides and biomass carbon for energy storage applications.
Article
Chemistry, Physical
Xiang Yue, Rui Hu, Dongdong Zhu, Jiqiu Qi, Yezeng He, Qingkun Meng, Fuxiang Wei, Yaojian Ren, Yanwei Sui
Summary: Flower-like CuS/NiS microspheres were successfully prepared by dealloying Ti-Cu-Ni amorphous ribbons in H2SO4 solution, exhibiting good electrochemical performance with a main composition of CuS and large specific surface area.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Yijie Ren, Guoqiang Zhang, Jinghao Huo, Junhong Li, Yi Liu, Shouwu Guo
Summary: Flower-like TiO2 hollow microspheres prepared with a silicon dioxide template have a large specific surface area and pore volume, which facilitate lithium-ion diffusion. As an anode material for lithium-ion batteries, the TiO2 hollow microspheres exhibit high discharge specific capacity, rate capacity, and long life.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Xiangyu Xu, Jeong In Han
Summary: Mo doping into heterostructures improves the material's performance, increasing the specific surface area, enhancing the specific capacitance, and improving cycling stability.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Applied
Yajing Yan, Yanxu Chen, Zhifeng Wang, Chunling Qin, Zhumabay Bakenov, Yan Zhao
Summary: Lithium sulfur batteries are promising for energy storage, but the low utilization efficiency of sulfur and shuttle effect of polysulfides hinder their development. This study utilized porous Ni3S2 hollow microspheres as sulfur hosts, improving cycling performance and rate capability. The research offers a simple route for developing transition metal sulfides with hollow structures as superior sulfur hosts for Li-S batteries.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)