Article
Nanoscience & Nanotechnology
Xiaoyan Song, Fangzheng Zhao, Zhipeng Wang, Runbin Ge, Jinfeng Xing
Summary: In this study, ZnO@SnO2-Pt core-shell nanofibers with a hollow structure were successfully prepared and exhibited superior gas-sensing performance, achieving higher response speed and sensitivity on the basis of reduced operating temperature. Additionally, the gas-sensing mechanism of the nanofibers was discussed in detail.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Peresi Majura Bulemo, Dong-Ha Kim, Il-Doo Kim
Summary: Novel synthesis techniques were employed to fabricate SiO2@SnO2 core-shell microbelts and hollow SnO2 microbelts, which were sensitized with platinum nanoparticles to enhance their acetone detection capability. The sensitized SnO2 microbelts showed significantly higher response to 2 ppm acetone and faster response time compared to pristine SnO2 microbelts. The sensor based on sensitized SnO2 microbelts also exhibited promising stability and repeatability toward acetone exposure in a humid environment.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Ke Xu, Ziwang Kan, Feiyu Zhang, Yuan Qu, Siqi Li, Song Liu
Summary: Here, we report SnO2 nanomaterials with well-controlled hollow multi-shelled structure as an efficient ethanol gas sensor. Among them, the double-shell SnO2 nanomaterials (SnO2-D) exhibited the best selectivity towards ethanol, reaching a Rg/Ra ratio of 22.5. In addition, the sensor detected 1 ppm ethanol with a Rg/Ra ratio of 1.37 and had a response time of only 2 seconds for 100 ppm ethanol. Furthermore, the SnO2-D maintained the same performance after 21 days of continuous response to 100 ppm ethanol.
Article
Chemistry, Physical
Kelin Hu, Feipeng Wang, Zijia Shen, Hongcheng Liu, Jianglin Xiong
Summary: Pd/ZnO-SnO2 hollow nanofibers prepared by electrospinning and magnetron sputtering exhibited excellent hydrogen sensing behavior, with a response reaching 171 at 270 degrees C. The enhanced sensing performance was attributed to the ternary heterojunctions formed in the hollow nanofibers. Various characterization techniques were used to study the materials and further explain the morphology formation process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Hang Li, Qian Ma, Jia Guo, Qi Zhang, Xueying Wang, Yi Wang
Summary: Porous and hollow SnO2/Zn2SnO4 composites with one-dimensional structure were synthesized by adjusting the amount of ZIF-8 in the precursor solution. Under UV light irradiation, the gas-sensing performance of the composites was significantly improved, with lower working temperature and faster response time. These composites were able to effectively detect gas released during food spoilage.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Zicheng Cai, Eunjung Goo, Sunghoon Park
Summary: Ethanol sensors with superior performance were fabricated using Au nanoparticles decorated SnO2 hollow nanospheres (Au-SnO2 HNS). The ethanol-sensing response of SnO2 HNS improved 2.7 times when exposed to 100 ppm ethanol gas measured at 250 degrees C, showing selective sensing response towards ethanol gas compared to other VOC gases. The improved sensing properties were attributed to the optimized morphologies of the sensing materials and the catalytic effect of the Au nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Shuaijun Hao, Hong Wang, Ruisong Yang, Di Liu, Jiawei Wan, Xiaohua Liu, Qiang Zhang, Xinkuan Chen
Summary: Dandelion-like SiO2@SnO2/alpha-Fe2O3 hollow microspheres were successfully synthesized with mesoporous structure and catalytic effect, showing excellent sensitivity to acetone gas.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Peresi Majura Bulemo, Jun Young Cheong
Summary: A rational design of gas-sensing materials is critical in achieving shorter gas diffusion lengths, improved surface reaction, and relatively high sensor sensitivity. In this work, SnO2 hollow spheres were successfully synthesized using an unprecedented Sn-MOF templating technique and high-temperature calcination. The SnO2 hollow spheres showed excellent acetone-sensing performance with good response, fast response time, and stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Jianqiao Liu, Jiarong Lv, Haomiao Xiong, Yujia Wang, Guohua Jin, Zhaoxia Zhai, Ce Fu, Qianru Zhang
Summary: In this study, size-controllable SnO2 quantum dots were prepared using a hydrolysis-oxidation-hydrothermal method, and their gas-sensing characteristics were evaluated. The results showed a negative correlation between grain size and resistance, and a comprehensive model was proposed to explain the findings.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
Rapelang G. Motsoeneng, Hendrik C. Swart, David E. Motaung
Summary: In this study, SnO2/ZnO heterostructures and Fe loaded SnO2/ZnO heterostructures were prepared using hydrothermal route with Fe loading concentration ranging from 0.02-1.00 wt %. The effect of different Fe loading concentrations on the surface of SnO2/ZnO heterostructure was analyzed. The optical properties and gas sensing performance of the heterostructures were also investigated.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Analytical
Myung Sik Choi, Ali Mirzaei, Han Gil Na, Sangwoo Kim, Dong Eung Kim, Kyu Hyoung Lee, Changhyun Jin, Sun-Woo Choi
Summary: This study proposed a method to enhance the gas sensing properties of metal oxide nanowires by preparing Pd metal catalyst surrounded by SnO2-x with structural defects on the surface of SnO2 nanowires. Gas sensing studies demonstrated the promising effects of this approach, showing the usefulness of significantly enhancing the gas sensing properties.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Zehua Huang, Weizhe Wang, Debiao Xiao, Yuzhi Mo, Shuangbao Wang, Zhimou Xu, Jing Peng
Summary: In this study, nano-size tin oxide particles were grown on micron hollow carbon spheres derived from the biomaterial chlorella, resulting in a three-dimensional hierarchical porous structure that enriches ethanol gas at a certain temperature. The ethanol gas sensor fabricated with this material exhibits better sensing performance at low temperatures (168-200 degrees C).
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Qian Ma, Hang Li, Jia Guo, Shushu Chu, Qi Zhang, Ziqiong Lin
Summary: Porous SnO2/NiO hollow nanofibers with effective surface transmission behavior were prepared through a modified electrospinning method, showing enhanced gas sensing properties for n-butanol gas with excellent selectivity and long-term stability. This was attributed to the flourishing porous one-dimensional microstructure containing p-n heterojunctions of SnO2 and NiO, providing large specific surface areas with a mass of active sites to promote the reaction between n-butanol molecule and O?- on the surface.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Yijun Yang, Bohee Maeng, Dong Geon Jung, Junyeop Lee, Yeongsam Kim, JinBeom Kwon, Hee Kyung An, Daewoong Jung
Summary: The study focuses on the performance of SnO2 thin film sensors for H-2 gas, revealing that annealed films exhibit higher response and shorter response time.
Article
Materials Science, Multidisciplinary
Zehua Huang, Weizhe Wang, Debiao Xiao, Yuzhi Mo, Shuangbao Wang, Zhimou Xu, Jing Peng
Summary: Metal oxide semiconductor gas sensors (MOS) based on tin oxide have excellent performance in detecting ethanol gas, but only at high temperatures. This study successfully developed a three-dimensional hierarchical porous structure by growing nano-size tin oxide particles on micron hollow carbon spheres derived from chlorella biomaterial. The ethanol gas sensor fabricated with this material shows better sensing performance at low temperatures (168-200 degrees C).
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Zhaoda Fang, Shouqin Tian, Bin Li, Qiufen Liu, Baoshun Liu, Xiujian Zhao, Gopinathan Sankar
Summary: The study demonstrated that coating VO2 films with ZnO improved the durability and thermochromic performance, especially in humid conditions. The presence of ZnO layer prevented further oxidation of VO2, enhancing the practical application of smart windows.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Baoshun Liu, Mengtao Gong, Jun Zhang, Shouqin Tian, Xiujian Zhao
Summary: The study investigated the metal-insulator transition of a polycrystalline VO2 film using simultaneous electric resistance and infrared thermographic measurements. Results showed that infrared thermographic measurement could be a simple and reliable method to study the MIT of VO2 materials.
Article
Chemistry, Physical
Mingfeng Zhang, Qiufen Liu, Shouqin Tian, Xuedong Zhou, Baoshun Liu, Xiujian Zhao, Gen Tang, Aimin Pang
Summary: This study developed a facile one-step annealing method under ammonia mixed atmosphere to prepare silica composite films with good mechanical properties for antireflection coatings. By increasing the chemical connection between particles, the mechanical property of the film was significantly improved, and the film thickness was reduced to increase solar transmittance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Weibing Zhou, Bo Yu, Jiaoqun Zhu, Kang Li, Shouqin Tian
Summary: This study constructs a hierarchical ZnO/MXene heterostructure photocatalyst, which significantly improves the efficiency and stability of photocatalytic degradation by shortening the carrier transfer path and providing uniform active sites and porous structure.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Applied
Fei Huang, Mengtao Gong, Shouqin Tian, Xiujian Zhao, Baoshun Liu
Summary: In this study, monoclinic VO2 films were prepared on quartz substrates through thermal oxidation with a vacuum pre-heating step. It was found that the pre-heating step significantly influenced the crystalline orientation and textual morphologies of the films. The orientated film demonstrated better growth direction, uniform nanoparticles, higher light modulations, and sharper electric resistance transitions compared to the untreated film. These differences were attributed to the structural variations of the orientated films.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Zhao Yu, Zhe Wang, Bin Li, Shouqin Tian, Gen Tang, Aimin Pang, Dawen Zeng, Gopinathan Sankar
Summary: This study utilized a zinc solution process to improve the surface structure of VO2 film, resulting in enhanced visible transmittance and solar modulation efficiency. The formation of a mesh morphology on the surface of VO2 film increased the visible transmittance by serving as an anti-reflection film. Additionally, the mesh morphology strengthened the solar modulation efficiency through multiple reflections.
Article
Materials Science, Ceramics
Bin Li, Shouqin Tian, Jiachen Qian, Senwei Wu, Baoshun Liu, Xiujian Zhao
Summary: Thermochromic VO2-based smart windows are highly promising for reducing building energy consumption, but their unsatisfactory optical performance hinders practical applications. Nanocomposite films are the most promising strategy to address this issue, but uniformly dispersing nanoparticles is often challenging.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Jiachen Qian, Bin Li, Shouqin Tian, Baoshun Liu, Xiujian Zhao
Summary: In this study, the performance of VO2-based thermochromic films was enhanced by incorporating photothermal W18O49 nanorods, resulting in higher luminous transmittance and solar energy modulation efficiency. The bilayer film showed excellent thermochromic properties and energy saving effects.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Ziqian Yi, Shouqin Tian, Wei Geng, Tongkai Zhang, Wen Zhang, Yaoqi Huang, Hannah-Noa Barad, Ge Tian, Xiao-Yu Yang
Summary: CdS nanoparticles were introduced onto E. coli cells to create a biohybrid system for hydrogen generation using tannic acid-Fe complex as a biointerface. This hybrid system exhibits excellent biological activity in high salinity environments. Under light illumination, the synthesized biohybrid system achieves a 32.44% enhancement in hydrogen production in seawater through a synergistic effect.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Physics, Applied
Jie Luo, Mengtao Gong, Shouqin Tian, Lincan Zhou, Tao Zheng, Xiujian Zhao, Baoshun Liu
Summary: Highly-crystalline W doped VO2 nanofilms were obtained through thermal oxidation of V-WO3 precursors, and their electric and optical properties were studied. The W-VO2 films are composed of rutile and monoclinic phases due to the decrease of the phase transition temperature. The results show that the W dopants lead to a great decrease in the cool-state resistances and their apparent activation energy.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Meinan Wan, Mo Xiong, Shouqin Tian, Xingzhu Chen, Bin Li, Xuesong Lu, Xiujian Zhao
Summary: Nitrogen-incorporated VO2 (M1) thin films with adjustable properties were synthesized using a sol-gel method and NH3 heat treatment. XPS analysis revealed nitrogen doping and adsorption in the VO2 lattice, leading to modified band structures. Tauc plot estimation and theoretical calculations indicated a reduction in critical temperature due to the combined effect of nitrogen incorporation and adsorption.
Article
Chemistry, Physical
Jiahao Wu, Zhe Wang, Bin Li, Baoshun Liu, Xiujian Zhao, Gen Tang, Dawen Zeng, Shouqin Tian
Summary: ZrO2-VO2 composite films with improved thermochromic performance were successfully created using a dual magnetron-sputtering and acid-solution procedure. The Delta T-sol and T-lum values of the films increased initially and subsequently declined as the sputtering power of the ZrO2 target was raised. This work offers a facile strategy to prepare VO2-based films with high thermochromic performance.
Article
Chemistry, Multidisciplinary
Qiufen Liu, Xuelei Chen, Jiahao Wu, Liming Zhang, Guanjie He, Shouqin Tian, Xiujian Zhao
Summary: In this paper, amorphous ZIF-8 was modified with carboxyl functional groups (H3BTC-ZIF-8) to load organic fluorescent dyes (R6G and C151) and prepare R6G/C151/H3BTC-ZIF-8 composite films. The enhanced fluorescence properties were attributed to the increased interactions between the dyes and H3BTC-ZIF-8, which reduced the ACQ effect and resulted in a white-light-emitting composite film with high photoluminescence quantum yield (PLQY). This strategy provides guidance for the development of white-light-emissive materials.
Article
Chemistry, Multidisciplinary
Weibing Zhou, Bo Yu, Jiaoqun Zhu, Kang Li, Shouqin Tian
Summary: A hierarchical porous ZnO/V2C nanocomposite was constructed by the heterojunction between V2C and ZnO nanosheets. It exhibited good photocatalytic performance in the degradation of organic dyes, with high degradation rates and excellent stability.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
Yongqiang Zhang, Bin Li, Zhe Wang, Shouqin Tian, Baoshun Liu, Xiujian Zhao, Neng Li, Gopinathan Sankar, Shifeng Wang
Summary: In this research, a Zn2V2O7-VO2 composite film was deposited on quartz glass to improve the optical performance, showing enhanced thermochromic performance compared to a pure VO2 film. The composite film exhibited higher T-lum and Delta T-sol due to the formation and uniform distribution of Zn2V2O7, which widened the optical band gap and improved the optical properties.
ACS APPLIED ELECTRONIC MATERIALS
(2021)