Article
Nanoscience & Nanotechnology
Gang Li, Yuanyi Zhang, Qingfei Liang, Jinniu Zhang, Jia Liu, Yumeng Liu, Chunlan Wang, Jianzhi Gao, Hongbing Lu
Summary: In this study, Co3O4-TiO2 porous heterojunction nanosheets derived from BMOFs were constructed and used for ethanol sensing. The Co3O4-TiO2 nanosheets showed better sensing performances than TiO2 nanotablets, and the nanosheets with an optimal molar ratio of 12 mol% exhibited the highest response value and selectivity coefficient.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Junliang Zhang, Shuyi Ma, Bingji Wang, Shitu Pei
Summary: The SnO2-CuO composite nanoparticles fabricated as an ethanol gas sensor exhibit excellent sensitivity and selectivity to ethanol, with short response recovery time and good linear relationship between response value and ethanol concentration, mainly due to the special heterostructure and synergistic effect between tin oxide and copper oxide.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xin Li, Nan Zhang, Caixia Liu, Samira Adimi, Jingran Zhou, Dali Liu, Shengping Ruan
Summary: The ZnO/Zn2SnO4 nanocomposites synthesized via one-step hydrothermal method demonstrated excellent gas sensing properties towards formaldehyde, showing higher sensitivity, better selectivity, and lower detection limit compared with pristine Zn2SnO4 and ZnO.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Ke Zhang, Yu Shen, Yunsheng Li, Wenrui Zhang
Summary: This study successfully synthesized ZnO@In2O3 heterojunction nanocomposites with ultra-sensitive response to ethanol. The unique structure and characteristics of the composites contribute to their excellent gas sensing properties, including improved sensitivity, reduced energy consumption, and excellent repeatability and stability.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Liming Song, Jiarui Zhang, Haiying Li, Xiaonian Tang
Summary: Hierarchical porous SnO2-ZnO microspheres have been synthesized by hydrothermal method and characterized. The results show that the sensor based on hierarchical porous SnO2-ZnO microspheres exhibits a good response to ethanol, indicating its potential for ethanol detection.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Feng Xu, Chaohao Hu, Di Zhu, Dianhui Wang, Yan Zhong, Chengying Tang, Huaiying Zhou
Summary: A highly efficient MgBi2O(6)/TiO2 photocatalyst was successfully prepared using a one-step hydrothermal method, showing excellent H-2 production performance under visible light. The superior photocatalytic properties of the composite material were attributed to the heterojunction formed between MBO and TiO2, which reduced charge transfer resistance and improved the separation efficiency of photogenerated electron-hole pairs.
Article
Materials Science, Multidisciplinary
Wei Wei, Huanhuan Zhang, Tiyue Tao, Xiaohong Xia, Yuwen Bao, Manon Lourenco, Kevin Homewood, Zhongbing Huang, Yun Gao
Summary: In this work, a carbon monoxide sensor based on the CuO/TiO2 heterojunction was designed and fabricated. The sensor exhibits high sensitivity to CO at room temperature due to the good adsorption properties of CuO materials and the heterojunction interface charge transfer. The interference from H-2 is greatly reduced by optimizing the structure of the CuO/TiO2 heterojunction.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenhao Wang, Lu Zhang, Yanli Kang, Feng Yu
Summary: The study successfully prepared TiO2-CoFe2O4-Ag composite material for detecting toluene gas by constructing heterojunction and doping with Ag, which enhanced the sensitivity and reduced the working temperature. The novel composite material showed superior performance in detecting toluene gas with low temperature, short response time, and high sensitivity.
Article
Chemistry, Physical
Yuanyi Zhang, Xia Xin, Hui Sun, Qianru Liu, Jinniu Zhang, Gang Li, Jianzhi Gao, Hongbing Lu, Chunlan Wang
Summary: The porous ZnO-SnO2-Zn2SnO4 heterojunction nanofibers were prepared using electrospinning and high ramp rate heat treatment, showing significantly enhanced ethanol sensing capabilities under UV light irradiation. The response of ZnO-SnO2-Zn2SnO4 nanofibers to ethanol was much higher than that of pure Zn2SnO4 nanofibers, and remained effective even in high humidity conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Hui Li, Chun-Han Wu, Yi-Cheng Liu, Shuo-Huang Yuan, Zong-Xian Chiang, Sam Zhang, Ren-Jang Wu
Summary: In this study, a WO3-TiO2 composite was fabricated as a hydrogen gas sensing element, showing high response, short recovery time, and mesoporous structure. The material exhibited good stability and repeatability, with a potential for practical applications as a hydrogen sensing element.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Ting-Ting Liang, Dong-Seog Kim, Ji-Wook Yoon, Yeon-Tae Yu
Summary: The rhombohedral In2O3 nanoparticles exhibit higher ethanol gas response and excellent ethanol selectivity compared to cubic and mixed-phase In2O3 nanoparticles, making them potentially useful in high-performance breathalyzers for screening drunk drivers.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Yuting Wang, Tianqi Wang, Wenyuan Pei, Feng Li, Ying Yang, Hui Yu, Xiangting Dong
Summary: This study presents a new strategy to construct TiO2 @POMs@ alpha-Fe2O3 one-dimensional tandem heterojunctions materials through one-step coaxial electrospinning. Three series of TiO2 @POMs@ alpha-Fe2O3 core-middle-shell nanoribbons with different Keggin-type POMs were synthesized. Gas sensing performances of the nanoribbons were investigated, showing significantly improved sensitivity and selectivity to acetone. The enhancement can be attributed to the addition of POMs electron acceptors, the construction of tandem heterojunctions, and the one-dimensional nano-structure.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Ang Li, Sikai Zhao, Jinzhou Bai, Shuling Gao, Dezhou Wei, Yanbai Shen, Zhenyu Yuan, Fanli Meng
Summary: By synthesizing SnO2@TiO2 nanorods, the sensing performance of titanium dioxide nanorods has been improved, exhibiting high response and stability towards hydrogen gas.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Ceramics
Shuai Zhang, Zhenguang Lin, Peng Song, Jing Sun, Qi Wang
Summary: Semiconductor metal oxide gas sensors are commonly used for real-time monitoring of various gases. However, their working temperature is usually high, limiting their applications. In this study, In2O3 nanotubes derived from metal-organic framework (MOF) and Cr2O3 nanoparticles were successfully prepared as composites. The resulting sensor showed excellent ethanol sensing performance at room temperature due to the synergistic effects of its unique hollow tube structure, large specific surface area, and p-n heterojunctions. This work provides a feasible synthesis strategy for metal oxide-based hybrid composites, which can be used to fabricate gas sensors with low energy consumption and high response.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Wenhao Wang, Lu Zhang, Zhisong Liu, Yanli Kang, Qiang Chen, Wei Wang, Minmin Liu, Bang-Ce Ye, Feng Yu, Yingchun Li
Summary: In this study, a TiO2-NiFe2O4 heterojunction was synthesized for trimethylamine (TMA) detection. The sensor exhibited a significant response to TMA at high temperature, and the response was further enhanced under white-light irradiation. The researchers explored the enhanced gas-sensing performance of the sensor using density functional theory. This study improves the gas-sensing ability for TMA detection and has potential applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Yuan Wang, Yun Zhou, Chuanmin Meng, Zhao Gao, Xiuxia Cao, Xuhai Li, Liang Xu, Wenjun Zhu, Xusheng Peng, Botao Zhang, Yifeng Lin, Lixin Liu
Review
Chemistry, Analytical
Yuan Wang, Tao Wu, Yun Zhou, Chuanmin Meng, Wenjun Zhu, Lixin Liu
Article
Chemistry, Multidisciplinary
Yun Zhou, Lixin Liu, Tao Wu, Guolong Yuan, Junyu Li, Qiujie Ding, Fugang Qi, Wenjun Zhu, Xiaoping OuYang, Yuan Wang
Article
Multidisciplinary Sciences
Yuan Wang, Lixin Liu, Chuanmin Meng, Yun Zhou, Zhao Gao, Xuhai Li, Xiuxia Cao, Liang Xu, Wenjun Zhu
SCIENTIFIC REPORTS
(2016)
Article
Materials Science, Multidisciplinary
Yuan Wang, Tao Wu, Liang Xu, Guangtao Liu, Yun Zhou, Zhenghua He, Xuhai Li, Xiuxia Cao, Chuanmin Meng, Wenjun Zhu, Lixin Liu
Article
Materials Science, Multidisciplinary
Bing Wang, Yuan Wang, Yun Zhou, Fugang Qi, Qiujie Ding, Junyu Li, Xiaoping OuYang, Lixin Liu
JOURNAL OF MATERIALS SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Yun Zhou, Qiujie Ding, Junyu Li, Qingdong Yang, Tao Wu, Wenjun Zhu, Xiaoping OuYang, Lixin Liu, Yuan Wang
JOURNAL OF MATERIALS SCIENCE
(2019)
Article
Nanoscience & Nanotechnology
Yun Zhou, Hongfu Zhu, Sichao Chen, Xiaoping Ou Yang, Lixin Liu, Yuan Wang
Summary: In this study, the defects of TiO2/Ag2O nanoheterojunctions were regulated to assess their impact on carrier trapping and recombination dynamics using TRPL and THZ spectroscopy. The findings suggest that interface defects can accelerate carrier recombination and promote electron trapping and Auger recombination in the nanoheterojunctions. This comprehensive analysis provides valuable experimental insights for controlling and utilizing nanoheterojunctions with interface defect fabrication.
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)