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Wang S, Wang M, Shao J, Liang X, Pan G, Qi Y. Dual-Functional Tungsten-Doped NiO for Highly Sensitive Triethylamine Sensor with ppb Level Detection Limit. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39264240 DOI: 10.1021/acsami.4c12495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
In this study, the W-doped Nickel oxide (NiO) nanoflowers were synthesized using a straightforward hydrothermal method, significantly enhancing the sensing performance toward triethylamine through dual-functional tungsten doping. The optimal doping concentration not only increased the specific surface area of NiO from 25.54 to 189.19 m2 g-1 but also reduced the formation energy of oxygen vacancies. The sensor containing 4 at % W-doped NiO demonstrated exceptional sensitivity to triethylamine, achieving a detection level as high as 229.0 for concentrations of 100 ppm at 237.5 °C. This triethylamine sensor represents a 135-fold enhancement over sensors fabricated from undoped NiO, and offers a rapid response/recovery time of 8 and 30 s, respectively. Furthermore, at a lower triethylamine concentration of 50 ppb, indicating a lower detection limit.
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Affiliation(s)
- Shangyan Wang
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
- Hebei Collaborative Innovation Center of Microelectronic Materials and Technology on Ultra Precision Processing, Hebei Engineering Research Center of Microelectronic Materials and Devices (ERC), Tianjin 300130, China
- Innovation and Research Institute of Hebei University of Technology in Shijiazhuang, Shijiazhuang 050299, China
| | - Mengjie Wang
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
- Hebei Collaborative Innovation Center of Microelectronic Materials and Technology on Ultra Precision Processing, Hebei Engineering Research Center of Microelectronic Materials and Devices (ERC), Tianjin 300130, China
- Innovation and Research Institute of Hebei University of Technology in Shijiazhuang, Shijiazhuang 050299, China
| | - Junkai Shao
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
- Hebei Collaborative Innovation Center of Microelectronic Materials and Technology on Ultra Precision Processing, Hebei Engineering Research Center of Microelectronic Materials and Devices (ERC), Tianjin 300130, China
- Innovation and Research Institute of Hebei University of Technology in Shijiazhuang, Shijiazhuang 050299, China
| | - Xichen Liang
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Guofeng Pan
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
- Hebei Collaborative Innovation Center of Microelectronic Materials and Technology on Ultra Precision Processing, Hebei Engineering Research Center of Microelectronic Materials and Devices (ERC), Tianjin 300130, China
- Innovation and Research Institute of Hebei University of Technology in Shijiazhuang, Shijiazhuang 050299, China
| | - Yuhang Qi
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
- Hebei Collaborative Innovation Center of Microelectronic Materials and Technology on Ultra Precision Processing, Hebei Engineering Research Center of Microelectronic Materials and Devices (ERC), Tianjin 300130, China
- Innovation and Research Institute of Hebei University of Technology in Shijiazhuang, Shijiazhuang 050299, China
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Wang M, Shao J, Liu H, Qi Y, He P, Yue S, Sun C, Dong J, Pan G, Yang X. High-Performance N-Butanol Gas Sensor Based on Iron-Doped Metal-Organic Framework-Derived Nickel Oxide and DFT Study. ACS APPLIED MATERIALS & INTERFACES 2023; 15:9862-9872. [PMID: 36757902 DOI: 10.1021/acsami.2c21169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In this study, a straightforward two-step hydrothermal process was used to synthesize Fe-doped NiO nanomaterials. A number of characterization approaches were employed to explore the structure and morphology of the synthesized Fe-doped NiO. The as-prepared samples were multi-layered flower-like structures formed by nanoparticles, according to scanning electron microscopy and transmission electron microscopy studies. The findings of the study on gas sensing performance showed that the response of the 1.5 at % Fe-NiO sensor was nearly 100 times greater than that of the pure NiO sensor, and the lower limit of detection was greatly decreased (50 ppb). The 1.5 at % Fe-NiO sensor exhibited superior sensing performance for n-butanol. The incorporation of an appropriate amount of Fe into the NiO lattice modified the carrier concentration, which is the primary cause of the increased sensor performance of an appropriate amount of Fe-doped NiO. In addition, the density functional theory calculation method based on the first-principles theory was used to study the adsorption performance and electronic behavior of pure NiO and 1.5 at % Fe-NiO for n-butanol. The calculated results were consistent with the experimental results.
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Affiliation(s)
- Mengjie Wang
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
| | - Junkai Shao
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
| | - Hongyan Liu
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
| | - Yuhang Qi
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
| | - Ping He
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
| | - Shengying Yue
- State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China
| | - Caixuan Sun
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
| | - Junyi Dong
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
| | - Guofeng Pan
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
| | - Xueli Yang
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, 5340 Xiping Road, Beichen District, Tianjin 300401, China
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Cao J, Zhang N, Yang S, Xu W, Zhang X, Zhang H, Wang S. Study on the selectivity difference of formaldehyde and ethanol induced by variation of energy gap in In2O3 hierarchical materials. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Liu J, Zhang L, Fan J, Yu J. Semiconductor Gas Sensor for Triethylamine Detection. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104984. [PMID: 34894075 DOI: 10.1002/smll.202104984] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/25/2021] [Indexed: 05/25/2023]
Abstract
With the demanding detection of unique toxic gas, semiconductor gas sensors have attracted tremendous attention due to their intriguing features, such as, high sensitivity, online detection, portability, ease of use, and low cost. Triethylamine, a typical gas of volatile organic compounds, is an important raw material for industrial development, but it is also a hazard to human health. This review presents a concise compilation of the advances in triethylamine detection based on chemiresistive sensors. Specifically, the testing system and sensing parameters are described in detail. Besides, the sensing mechanism with characterizing tactics is analyzed. The research status based on various chemiresistive sensors is also surveyed. Finally, the conclusion and challenges, as well as some perspectives toward this area, are presented.
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Affiliation(s)
- Jingjing Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Liuyang Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China
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5
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Sudha S, Ramprasath R, Cholan S, Gokul B, Sridhar S, Elhosiny Ali H, Shkir M. Enhanced triethylamine gas sensing and photocatalytic performance of Sn doped NiO (SNO) nanoparticles. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109104] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Song K, Yuan L, Liu Z, Qiao H, Yu Y, Shen X, Hu X. Synthesis of Fe-doped NiO nanosheets on carbon cloth for improved catalytic performance in Li–O 2 batteries. NEW J CHEM 2022. [DOI: 10.1039/d1nj05277b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The substitution of Ni2+ in NiO with Fe3+ can significantly improve the cycling stability and discharge/recharge capacities of Li–O2 batteries.
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Affiliation(s)
- Kefan Song
- College of Materials Science and Engineering, Nanjing Tech University, Puzhu South Road No. 30, Nanjing, Jiangsu 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, China
- The Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Lefan Yuan
- College of Materials Science and Engineering, Nanjing Tech University, Puzhu South Road No. 30, Nanjing, Jiangsu 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, China
- The Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Zeyu Liu
- College of Materials Science and Engineering, Nanjing Tech University, Puzhu South Road No. 30, Nanjing, Jiangsu 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, China
- The Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Handan Qiao
- College of Materials Science and Engineering, Nanjing Tech University, Puzhu South Road No. 30, Nanjing, Jiangsu 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, China
- The Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Yawei Yu
- College of Materials Science and Engineering, Nanjing Tech University, Puzhu South Road No. 30, Nanjing, Jiangsu 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, China
- The Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Xiaodong Shen
- College of Materials Science and Engineering, Nanjing Tech University, Puzhu South Road No. 30, Nanjing, Jiangsu 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, China
- The Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Xiulan Hu
- College of Materials Science and Engineering, Nanjing Tech University, Puzhu South Road No. 30, Nanjing, Jiangsu 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, China
- The Synergetic Innovation Center for Advanced Materials, Nanjing, China
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7
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Liang X, Zhang J, Zhang K, Yang X, Zhang M. The modification effect of Fe2O3 nanoparticles on ZnO nanorods improves the adsorption and detection capabilities of TEA. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01339d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The depletion layer and more active sites are the key factors for improving the gas sensitivity of an Fe2O3/ZnO sensor.
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Affiliation(s)
- Xiao Liang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Jing Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Kewei Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Xiaodong Yang
- School of Mechanical Engineering, Jilin Engineering Normal University, Changchun 130052, People's Republic of China
| | - Mingzhe Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
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Zeng J, Rong Q, Xiao B, Zi B, Kuang X, Deng X, Ma Y, Song Z, Zhang G, Zhang J, Liu Q. Ultrasensitive ppb-level trimethylamine gas sensor based on p-n heterojunction of Co 3O 4/WO 3. NANOTECHNOLOGY 2021; 32:505511. [PMID: 34587592 DOI: 10.1088/1361-6528/ac2b6d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/29/2021] [Indexed: 06/13/2023]
Abstract
Trace poisonous and harmful gases in the air have been harming and affecting people's health for a long time. At present, effective and accurate detection of ppb-level harmful gas is still a bottleneck to be overcome. Herein, we report a ppb-level triethylamine (TEA) gas sensor based on p-n heterojunction of Co3O4/WO3, which is prepared with ZIF-67 as the precursor and provides Co3O4deposited tungsten oxide flower-like structure. Due to the introduction of Co3O4and the 3D flower-like structure of WO3, the Co3O4/WO3-2 gas sensor shows excellent gas sensing performance (1101 for 10 ppm at 240 °C), superb selectivity, good long-term stability and linear response for TEA concentration. Moreover, the experimental results indicate that the Co3O4/WO3-2 gas sensor also possesses a good response to 50 ppb TEA, in fact, the theoretical limit of detection is 0.6 ppb. Co3O4not only improves the efficiency of electron separation/transport, but also accelerates the oxidation rate of TEA. This method of synthesizing p-n heterojunction with ZIF as the precursor provides a new idea and method for the preparation of low detection limit gas sensors.
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Affiliation(s)
- Jiyang Zeng
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Qian Rong
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Bin Xiao
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Baoye Zi
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Xinya Kuang
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Xiyu Deng
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Yiwen Ma
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Zhenlin Song
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Genlin Zhang
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Jin Zhang
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Qingju Liu
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
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Wang G, Yang S, Cao L, Jin P, Zeng X, Zhang X, Wei J. Engineering mesoporous semiconducting metal oxides from metal-organic frameworks for gas sensing. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214086] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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10
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Yu Q, Jin R, Zhao L, Wang T, Liu F, Yan X, Wang C, Sun P, Lu G. MOF-Derived Mesoporous and Hierarchical Hollow-Structured In 2O 3-NiO Composites for Enhanced Triethylamine Sensing. ACS Sens 2021; 6:3451-3461. [PMID: 34473472 DOI: 10.1021/acssensors.1c01374] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
It remains a challenge to design and fabricate high-performance gas sensors using metal-organic framework (MOF)-derived metal oxide semiconductors (MOS) as sensing materials due to the structural damage during the annealing process. In this study, the mesoporous In2O3-NiO hollow spheres consisting of nanosheets were prepared via a solvothermal reaction and subsequent cation exchange. More importantly, the transformation of Ni-MOF into In/Ni-MOF through exchanging the Ni2+ ion with In3+ ion can prevent the destruction of the porous reticular skeleton and hierarchical structure of Ni-MOF during calcination. Thus, the mesoporous In2O3-NiO hollow composites possess high porosity and large specific surface area (55.5 m2 g-1), which can produce sufficient permeability pathways for volatile organic compound (VOCs) molecules, maximize the active sites, and enhance the capacity of VOC capture. The mesoporous In2O3-NiO-based sensors exhibit enhanced triethylamine (TEA) sensing performance (S = 33.9-100 ppm) with distinct selectivity, good long-term stability, and lower detection limit (500 ppb) at 200 °C. These results can be attributed to the mesoporous hollow hierarchical structure and p-n junction of In2O3-NiO. The preparation concept mentioned in this work may provide a versatile platform applicable to various mesoporous composite sensing material-based hollow structures.
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Affiliation(s)
- Qi Yu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Rongrong Jin
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Liupeng Zhao
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Tianshuang Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Fangmeng Liu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Xu Yan
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Chenguang Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Peng Sun
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Geyu Lu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
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Du L, Wang D, Gu K, Zhang M. Construction of PdO-decorated double-shell ZnSnO 3 hollow microspheres for n-propanol detection at low temperature. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01292k] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The sensor based on 4 wt% PdO-loaded double-shell ZnSnO3 hollow microspheres shows rapid response/recovery speed to n-propanol at low working temperature.
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Affiliation(s)
- Liyong Du
- State key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Dongxue Wang
- State key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Kuikun Gu
- State key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Mingzhe Zhang
- State key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- People's Republic of China
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12
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Yang J, Liu J, Baihan Li, Han L, Xu Y. A microcube-like hierarchical heterostructure of α-Fe 2O 3@α-MoO 3 for trimethylamine sensing. Dalton Trans 2020; 49:8114-8121. [PMID: 32490859 DOI: 10.1039/d0dt01521k] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A rational design and directional synthesis of well-defined porous metal oxide heterostructures remains a challenge for the fabrication of new gas sensors with enhanced sensing properties. Herein, a novel hierarchical heterostructure of α-Fe2O3@α-MoO3 microcubes was prepared by applying a self-sacrifice template strategy, in which a porous metal-organic framework (MOF) was used as the precursor with the partial insertion of OH- and MoO42- and extraction of [Fe(CN)6]34- followed by heating treatment. Benefiting from the porous microcubic structural characteristic, the α-Fe2O3@α-MoO3 heterostructures exhibited excellent selectivity and high sensitivity for triethylamine gas with the highest response value (Ra/Rg) of 18.64 under the operating temperature of 240 °C. The experimental results also revealed that the material showed a fast response and recovery time (12 s/106 s) and excellent repeatability for at least 20 days. This feasible synthetic strategy may provide a versatile and controlled way to prepare other polymetal oxide-based heterostructures with improved sensing performance.
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Affiliation(s)
- Jing Yang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, Liaoning 110819, PR China.
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