Article
Chemistry, Analytical
Licheng Zhou, Zhixiang Hu, Peng Wang, Naibo Gao, Bohui Zhai, Meng Ouyang, Guangzu Zhang, Bingbing Chen, Jingting Luo, Shenglin Jiang, Hua-Yao Li, Huan Liu
Summary: The researchers developed a novel strategy to prepare SnO2 quantum wires with different (110) facets ratio, and integrated them into SAW devices to optimize gas sensor performance. The response of the SAW gas sensor was enhanced with a frequency change of 17 kHz, and the response and recovery times were 45 s and 96 s, respectively. The mass loading effect was found to be the responsible mechanism for the superior NO2 gas sensing performances, and the (110) facet of SnO2 was found to be more beneficial for NO2 adsorption.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Run-Hui Wang, Wei Wen, Shilie Zheng, Zhizhen Ye, Jin-Ming Wu
Summary: In this study, a layered mesoporous aggregate of tin oxide nanocrystals with high specific surface area and mesoporous structure was synthesized. The tin oxide showed high ethanol sensing performance at low temperatures, with high selectivity and stability. The ethanol sensing mechanism changed with increasing operating temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Yanhui Sun, Jing Wang, Haiying Du, Xiaogan Li, Chen Wang, Tengyue Hou
Summary: The addition of zeolite on the surface of metal oxides enhances the selectivity of gas sensors, and the synthesis of SnO2/ZSM-5 composite nanofibers can improve sensor sensitivity and selectivity to formaldehyde. The interface between the two materials plays a significant role in enhancing sensor properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Fanli Meng, Zhijia Liao, Chaoyang Xing, Zhenyu Yuan, Renze Zhang, Hongmin Zhu, Jin Li
Summary: SnO2/SiO2 nanocomposites were prepared by the sol-gel method, demonstrating superior gas sensing properties and the ability to detect triethylamine at a minimum concentration of 500 ppb.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Yoshitake Masuda
Summary: This review focuses on tin oxide nanomaterials, which are actively researched as semiconductor-type gas sensors. The development and applications of novel tin oxide nanomaterials in the past decade are discussed, with a focus on how dimensions and morphology affect sensing performance. The dendritic structure formed by 2D nanosheets connected by crystal growth points towards future sensor development, while the high gas adsorption performance and reactivity of metastable crystal planes provide guidance for future sensor development.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Sevda Saritas
Summary: Fe2-xSnxO3 structures were grown using RF-DC magnetron co-sputtering. The band gap, morphology, and structural features of the film were studied, revealing their influence on the gas sensor response.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Analytical
Sihang Lu, Yuzhu Zhang, Jingyao Liu, Hua-Yao Li, Zhixiang Hu, Xie Luo, Naibo Gao, Bao Zhang, Jianjun Jiang, Aihua Zhong, Jingting Luo, Huan Liu
Summary: Highly sensitive H-2 gas sensors based on porous network of SnO2 nanowires were demonstrated in this study, with improved performance and shortened response/recovery time after Pd doping. The superb sensitivity of the sensor was credited to the ultrathin SnO2 nanowires network structure and the catalytic activity of Pd.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Estacio P. de Araujo, Murilo P. P. Paiva, Lucas A. A. Moises, Gabriel S. do Espirito Santo, Kate C. C. Blanco, Adenilson J. J. Chiquito, Cleber A. A. Amorim
Summary: This study reports the fabrication of a nanobelt-based SnO2 gas sensor, in which the electrical contacts to nanobelts are self-assembled. The nanobelts were grown using the vapor-solid-liquid (VLS) growth mechanism with gold as the catalytic site. The sensor characteristics were tested for the detection of CO and CO2 gases, showing improved response, response time, and recovery with increasing temperature and surface decoration using Pd nanoparticles, making them important candidates for human health detection.
Article
Chemistry, Physical
Minggang Zhang, Mingyang Lu, Haixi Pan, Haili Bai, Hui Mei, Laifei Cheng
Summary: Facet engineering is used to optimize the surface of metal oxide semiconductors, leading to improved properties. The use of quasi-cubic alpha-Fe2O3 with high-energy facets exposed in ethanol sensing material fabrication shows excellent selectivity towards ethanol vapor, with high adsorption energy and good stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Zubair Hassan Zargar, Kazi Jabed Akram, Gyan Ranjan Biswal, Tarikul Islam
Summary: This article introduces a capacitive sensor for measuring traces of moisture in SF6 gas used in gas-insulated switchgear (GIS). The sensor demonstrates good sensitivity, accuracy, low hysteresis, and high repeatability, making it effective for moisture measurement in GIS.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Review
Materials Science, Ceramics
Emanuel P. Nascimento, Hellen C. T. Firmino, Gelmires A. Neves, Romualdo R. Menezes
Summary: Gas sensors based on SnO2 nanostructures have been extensively investigated, and the sensing performance of SnO2 can be greatly improved by synthesizing different-dimensional and doped SnO2 nanostructures. Doping and larger surface area are important factors affecting the sensing properties of SnO2.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Environmental
Libin Tan, Qiaomei Yang, Longpeng Peng, Can Xie, Kun Luo, Liyi Zhou
Summary: This study reports a dual-response fluorescent sensor CGT for simultaneous detection of bisulphites and nitrites. The results show that CGT has good detection capability for HSO3- and NO2- in complex aqueous samples and biosystems.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Liubo Yuan, Meng Gao, Hubing Xiang, Zihan Zhou, Dongqing Yu, Ruixiang Yan
Summary: Researchers have discovered that petunia dye extracted from petunia flowers demonstrates a highly sensitive colorimetric response to sulfur dioxide (SO2) gas. This finding could potentially be utilized as an intelligent gas sensor for predicting food status in daily life, food storage, and supply chains.
Article
Chemistry, Multidisciplinary
Liubo Yuan, Meng Gao, Hubing Xiang, Zihan Zhou, Dongqing Yu, Ruixiang Yan
Summary: Petunia dye (PD), extracted from natural petunia flowers, has been found to have a highly sensitive colorimetric response to sulfur dioxide (SO2) gas. The developed PD-based SO2 detection label can be used for real-time monitoring and prediction of food quality and safety.
Article
Chemistry, Analytical
Qian Xia, Cuiping Gu, Xingxing Xie, Haibo Ren, Sang Woo Joo, Jiarui Huang
Summary: In this study, Sn-doped Fe2O3 microflowers were synthesized and used as sensing materials for acetone sensors. The microflowers exhibited good selectivity, high sensitivity, and stability for acetone vapor detection, with enhanced adsorption of acetone molecules.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
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)