Article
Environmental Sciences
Poonam Kumari, Surojit Pande, Pragati Fageria
Summary: The search for efficient semiconductor catalysts for the degradation of pollutants in contaminated water is an interesting area of research due to growing environmental concerns. Hollow nanomaterials, with their larger surface area, demonstrate significant applications in catalysis. This study introduces a facile hydrothermal synthesis method to produce hollow nanorods of ZnO/ZnS via the Kirkendall effect. The synthesized materials were used for photocatalytic degradation and exhibited higher efficiency compared to bare ZnO, suggesting the potential of hollow nanomaterials in varied catalytic reactions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Cheng-Hui Xia, Julia Kundin, Ingo Steinbach, Sergiy Divinski
Summary: The effect of non-equilibrium vacancy on Kirkendall porosity formation was studied using a developed model of multi-component diffusion with vacancies (MDV). The results showed that the vacancy distribution strongly influences the porosity, while the diffusion profiles of substitutional components slightly depend on the intensity of source/sink.
Article
Materials Science, Multidisciplinary
Sin-Ling Chiam, Anh Thi Le, Swee-Yong Pung, Fei-Yee Yeoh
Summary: This study introduces a method using beta-MnO2 particles as a photocatalyst to selectively remove Ag(I) ions from aqueous solution at various pH levels.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Engineering, Chemical
Marzieh Khademalrasool, Mansoor Farbod, Mohammad Davoud Talebzadeh
Summary: Plasmonic composites of silver nanostructures and zinc oxide semiconductor exhibit enhanced photocatalytic performance, with silver cubes showing the highest increase in activity compared to other morphologies.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Engineering, Environmental
Guoxiang Wang, Yingqi Chen, Andriy Lotnyk, Xiang Shen, Haizhou Shi
Summary: This study investigates the impact of Mg additive on the thermoelectric performance and microstructure of Mg-Zn-Sb thin films. The results show complex microstructural changes upon heating, with the formation of Kirkendall voids enhancing the thermoelectric performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Nadeem Raza, Waseem Raza, Hajera Gul, Ki-Hyun Kim
Summary: The novel heterostructured photocatalyst (ZnO-ZnTe) exhibit efficient photocatalytic performance for the removal of azo dye, showing high potential as a cost-effective and green remediation technique in water treatment processes.
ENVIRONMENTAL RESEARCH
(2021)
Article
Engineering, Environmental
Fei-Hu Du, Shang-Qi Li, Yuan Yan, Xiao-Meng Lu, Chaofei Guo, Zhenyuan Ji, Pengfei Hu, Xiaoping Shen
Summary: By briefly adjusting the calcination temperature of the precursor, yolk-shell, hollow, and hierarchical Fe0.8Mn1.2O3 sub-micropolyhedrons are produced, showing superior lithium-ion storage performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Z. -x. Huang, H. Liu, Y. -x. Liu, L. Tan, Y. -j. Wu
Summary: This work successfully prepared a hierarchical silver-coated zinc anode, which exhibited long-term cycle stabilities of zinc stripping and plating with the assistance of anionic surfactant (trisodium citrate). The Ag-coated zinc anode showed improved stability compared to pure zinc anodes, with over 1200 cycles of operation. The study provides new insights for enhancing the performance of Zn-metal batteries.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
A. N. Kolodin, O. A. Bulavchenko, M. M. Syrokvashin, E. A. Maksimovskiy, A. I. Bulavchenko
Summary: The organosol of nanoparticles was synthesized by reducing silver nitrate with hydrazine in reverse emulsions stabilized by sodium bis(2-ethylhexyl)sulfosuccinate. The obtained silver nanoparticle emulsion was concentrated using electrophoretic concentration. Silver nanoparticle films with tunable properties were obtained, and the sintering process and separation procedure for the metallic films were studied.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Karthikeyan Sekar, Ahmed Kassam, Yang Bai, Ben Coulson, Wei Li, Richard E. Douthwaite, Keiko Sasaki, Adam F. Lee
Summary: Bismuth vanadate (BiVO4) is a widely studied photocatalyst for various applications, such as water depollution and hydrogen production. Among them, hierarchical BiVO4 plates decorated with nanoparticles (h-BiVO4) in contact with reduced graphene oxide (RGO) exhibit superior photocatalytic performance for bisphenol A degradation and hydrogen evolution under visible light irradiation.
APPLIED MATERIALS TODAY
(2021)
Article
Polymer Science
Xiaoshuang Shen, Pan Jiang, Dengkang Guo, Gaiyun Li, Fuxiang Chu, Sheng Yang
Summary: The study investigated the effect of wood impregnation with furfuryl alcohol on its hierarchical porous structure. Results showed that lumina diameters decreased, cell wall thickness increased, and some perforations and pits were occluded. Porosity and pore volume decreased in furfurylated woods compared to untreated wood, with the alterations becoming more remarkable with higher weight percent gain.
Article
Chemistry, Physical
Mohammad Fereidooni, Oswaldo Nunez, Victor Marquez, C. Paz, Martin Salazar Villanueva, Myo Zin Tun, Pongsakorn Kanjanaboos, Supareak Praserthdam, Piyasan Praserthdam
Summary: This study investigates the effect of three different substrates on the charge transfer and activity in the photocatalytic CO2 reduction of two noble-metal free catalysts. The results show that the transfer of charge carriers between the substrate and catalyst varies significantly between substrates and has a substantial effect on the photocatalytic activity.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiaoning Ren, Panqing Yin, Jun Liang, Xiangjian Liu, Wugen Zhan, Jiaojiao Niu, Tong Si, Tao Yu, Dan Wu, Bo Wang
Summary: The research found that the TA-based modular-assembly strategy has good versatility on different types of nanomaterials, and biocompatibility can be optimized by adjusting the relative ratio. Proper utilization of TA and nanomaterials is crucial for material loading effect, while excessive TA and Fe3+ may have negative impacts.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Thermodynamics
Henrik Larsson
Summary: The use of Boltzmann's transformation to numerically solve diffusion problems using CALPHAD databases is demonstrated, with a focus on multicomponent, multiphase systems and composition dependent molar volumes. The formation of Kirkendall porosity is also discussed as an application of this method.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yuto Katsuyama, Nagihiro Haba, Hiroaki Kobayashi, Kazuyuki Iwase, Akira Kudo, Itaru Honma, Richard B. Kaner
Summary: A 3D-hierarchical carbon lattice with ordered macropores and uniform nanopores is prepared using a cheap 3D printer and CO2 activation process. It exhibits a high areal capacitance and is further improved by electrochemically depositing manganese oxide. A high-performance asymmetric supercapacitor is then fabricated, achieving one of the highest reported areal energy and power densities.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Q. Y. Zhang, D. Q. Shi, W. Xu, C. Y. Miao, C. Y. Ma, C. S. Ren, C. Zhang, Z. Yi
Article
Chemistry, Physical
W. Xu, S. Q. Wang, Q. Y. Zhang, C. Y. Ma, X. N. Li, Q. Wang, D. H. Wen
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Physical
Lijian Meng, Wei Xu, Qingyu Zhang, Tao Yang, Shikao Shi
APPLIED SURFACE SCIENCE
(2019)
Article
Materials Science, Coatings & Films
Wei Xu, Heli Tang, Qing-Yu Zhang, Nan Zhou, Yu Shen
SURFACE & COATINGS TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
Wei Xu, Heli Tang, Nan Zhou, Qingyu Zhang, Bo Peng, Yu Shen
Summary: This study fabricated TiO2/Ag2O heterostructured films using a unique method, which showed excellent photocatalytic activity under low temperature and low oxygen pressure conditions. The thickness of the TiO2 layer was found to significantly impact the photocatalytic performance, with enhanced activity attributed to the separation of electron-hole pairs.
Article
Materials Science, Multidisciplinary
Wei Xu, Xin Mao, Nan Zhou, Qing-Yu Zhang, Bo Peng, Yu Shen
Summary: The study investigated the plasma near the sputtering target using optical emission spectroscopy and found that the atomic oxygen density ([O]) plays a crucial role in the growth behavior and crystallinity of NiO films. By adjusting the sputtering mode and [O] value, it is possible to influence the orientation growth and crystallinity of NiO films.
Article
Materials Science, Ceramics
Wei Xu, Rui Qiu, Xin Mao, Xu Yang, Bo Peng, Yu Shen
Summary: In this study, amorphous Ni-Fe-P alloys with different phosphorus concentrations were fabricated by one-step electrodeposition, showing enhanced HER and OER performances with optimized phosphorus concentration. As bifunctional electrodes for water splitting, the NiFe-P catalysts exhibited excellent overall water splitting performance and durability, surpassing that of as-synthesized Ni-Fe alloys.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Xu Yang, Rui Qiu, Ming-Jian Lan, Gang Chen, Wei Xu, Yu Shen
Summary: Designing efficient and low-cost electrocatalysts is crucial for hydrogen storage and conversion of renewable energy. This study presents a binder-free Ni-Fe-S electrocatalyst with excellent hydrogen evolution reaction performance and potential in overall water electrocatalysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Wei Xu, Shuan Zhao, Jun-Peng Zhang, Xu Yang, Yu-Xia Tang, Yi-Wen Han, Yu Shen
Summary: In this study, amorphous Ni-Fe-S electrocatalysts were synthesized on Cu sheets and Ni foams using a simple electrodeposition method. The optimized Ni-Fe-S electrocatalysts demonstrated enhanced hydrogen and oxygen evolution reaction performances compared to Ni-Fe and Ni catalysts. The bifunctional Ni-Fe-S electrodes exhibited excellent stability and only required low cell voltages to achieve high current densities.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
W. Xu, C. X. Li, Q. Y. Zhang, C. Y. Ma, Q. Wang, D. H. Wen, X. N. Li
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)