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Zhang Y, Liu J, Rong C, Wang D, Li W, Gao Z, Chen Y. Current Advances of CO Sensing Based on Low Dimensional Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39196291 DOI: 10.1021/acs.langmuir.4c01861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Carbon monoxide (CO) is a harmful gas with significant impacts on human health and the environment. Its timely detection, especially in the event of thermal runaway in automotive lithium batteries, is crucial to prevent casualties. This paper reviews the progress in the development of efficient, sensitive, and reliable CO sensors, focusing on electrochemical, optical, and resistive sensing materials. Low-dimensional materials have a large specific surface area, providing an abundant number of active sites, which has drawn extensive attention from researchers. According to the different sensor signals, we categorized these sensors into electrical and optical signal sensors. We hope that by systematically introducing the sensing mechanism and sensing performance of these two kinds of sensors, appropriate CO sensors can be developed in different application scenarios so as to realize early warning and monitoring to the maximum extent, reduce industrial losses, and ensure the life and health of personnel.
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Affiliation(s)
- Yundi Zhang
- College of Automotive Engineering, Jilin University, Changchun 130025, China
| | - Jie Liu
- College of Automotive Engineering, Jilin University, Changchun 130025, China
| | - Changru Rong
- General Research and Development Institute, China FAW Corporation Limited, Changchun 130013, China
| | - Deping Wang
- General Research and Development Institute, China FAW Corporation Limited, Changchun 130013, China
| | - Weifeng Li
- National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, Changchun 130025, China
| | - Zhenhai Gao
- College of Automotive Engineering, Jilin University, Changchun 130025, China
| | - Yupeng Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
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Zhao F, Yu L, Wang J, Cao W, Zhang H, Wang H, Wang PH, Qiao Z. Metal-Organic Framework-Derived Au-Doped In 2O 3 Nanotubes for Monitoring CO at the ppb Level. ACS Sens 2024; 9:4007-4016. [PMID: 39078621 DOI: 10.1021/acssensors.4c00862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2024]
Abstract
Achieving selective detection of ppb-level CO is important for air quality testing at industrial sites to ensure personal safety. Noble metal doping enhances charge transfer, which in turn reduces the detection limit of metal oxide gas sensors. In this work, metal-organic framework-derived Au-doped In2O3 nanotubes with high electrical conductivity are synthesized by pyrolysis of the Au-doped metal-organic framework (In-MIL-68) as a template. Gas-sensing experiments reveal that the detection limit of 0.2% Au-doped In2O3 nanotubes (0.2% Au, mass fraction) is as low as 750 ppb. Meanwhile, the sensing material shows a response value of 18.2 to 50 ppm of CO at 240 °C, which is about 2.8 times higher than that of pure In2O3. Meanwhile, the response and recovery times are short (37 s/86 s). The gas-sensing mechanism of CO is uncovered by in situ DRIFTS through the reaction intermediates. In addition, first-principles calculations suggest that Au doping of In2O3 significantly enhances its adsorption energy for CO and improves the electron transfer properties. This study reveals a novel synthesis pathway for Au-doped In2O3 nanotubular structures and their potential application in low concentration CO detection.
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Affiliation(s)
- Fan Zhao
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, Shaanxi 710021, China
- Research Institute of Chemical Defense, Beijing 102205, China
| | - Lingmin Yu
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, Shaanxi 710021, China
| | - Jingfeng Wang
- Research Institute of Chemical Defense, Beijing 102205, China
| | - Wei Cao
- Research Institute of Chemical Defense, Beijing 102205, China
| | - Hao Zhang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, Shaanxi 710021, China
| | - Hairong Wang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, PR China
| | - Pu-Hong Wang
- Research Institute of Chemical Defense, Beijing 102205, China
| | - Zhihong Qiao
- Research Institute of Chemical Defense, Beijing 102205, China
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Wu H, Wang Y, Jiang D, Chen X, Tan J, Xu Z, Lei H, Li X. Simple synthesis of flower-like ZnO@Pt composites for dual-mode colorimetric detecting Hg 2+ with smartphone and UV-vis. Anal Chim Acta 2024; 1311:342732. [PMID: 38816157 DOI: 10.1016/j.aca.2024.342732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 05/15/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND Mercury is one of the most toxic heavy metal contaminants that can be harmful to human health through the food chain. Recently, the colorimetric detection of heavy metals based on nanozyme catalytic activity has received extensive interest due to the simplicity, signal visibility and suitability for in situ detection. However, the majority of these nanozymes that can be utilized for detecting mercury with high synthesis temperature and complicated synthesis methods, which limited their practical application. RESULTS In this work, flower-like ZnO@Pt composites were simply synthesized at room temperature, the flower-like structure and the high electron mobility of ZnO endow ZnO@Pt with stronger peroxidase-like activity. Consequently, dual-mode (UV-vis and smartphone) colorimetric sensors were designed to detect Hg2+. In UV-vis mode, the Hg2+ concentration linear range was 10-400 nM, and the limit of detection (LOD) was 0.54 nM. In smartphone mode, the Hg2+ concentration linear range was 50-1250 nM, and the LOD was 29.8 nM. A parallel analysis in 3 real water samples was confirmed by ICP-MS, the results showed good correlations (R2 > 0.98), indicating the practical reliability of these sensors. SIGNIFICANCE The novel flower-like ZnO@Pt composites with high stability, catalytic activity and Hg2+ response were simply synthesized at room temperature, simplifying the synthesis steps and reducing costs. The sensitivity of the developed colorimetric sensor in UV-vis mode was 3-145 times higher than that of the similar methods. The colorimetric sensor in smartphone mode broadened the detection range and improved the portability of Hg2+ detection. Thus, the dual-mode (UV-vis and smartphone) colorimetric sensors providing new detection modes for rapid monitoring of Hg2+ in environmental water.
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Affiliation(s)
- Han Wu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Yu Wang
- Guangzhou Institute for Food Inspection, Guangzhou, 511410, China
| | - Duan Jiang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaomin Chen
- Guangzhou Institute for Food Inspection, Guangzhou, 511410, China
| | - Jingping Tan
- Guangzhou Institute for Food Inspection, Guangzhou, 511410, China
| | - Zhenlin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Xiangmei Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
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Wu P, Li Y, Yang A, Tan X, Chu J, Zhang Y, Yan Y, Tang J, Yuan H, Zhang X, Xiao S. Advances in 2D Materials Based Gas Sensors for Industrial Machine Olfactory Applications. ACS Sens 2024; 9:2728-2776. [PMID: 38828988 DOI: 10.1021/acssensors.4c00431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
The escalating development and improvement of gas sensing ability in industrial equipment, or "machine olfactory", propels the evolution of gas sensors toward enhanced sensitivity, selectivity, stability, power efficiency, cost-effectiveness, and longevity. Two-dimensional (2D) materials, distinguished by their atomic-thin profile, expansive specific surface area, remarkable mechanical strength, and surface tunability, hold significant potential for addressing the intricate challenges in gas sensing. However, a comprehensive review of 2D materials-based gas sensors for specific industrial applications is absent. This review delves into the recent advances in this field and highlights the potential applications in industrial machine olfaction. The main content encompasses industrial scenario characteristics, fundamental classification, enhancement methods, underlying mechanisms, and diverse gas sensing applications. Additionally, the challenges associated with transitioning 2D material gas sensors from laboratory development to industrialization and commercialization are addressed, and future-looking viewpoints on the evolution of next-generation intelligent gas sensory systems in the industrial sector are prospected.
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Affiliation(s)
- Peng Wu
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Yi Li
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Aijun Yang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong, No 28 XianNing West Road, Xi'an, Shanxi 710049, China
| | - Xiangyu Tan
- Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming, Yunnan 650217, China
| | - Jifeng Chu
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong, No 28 XianNing West Road, Xi'an, Shanxi 710049, China
| | - Yifan Zhang
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Yongxu Yan
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Ju Tang
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Hongye Yuan
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shanxi 710049, China
| | - Xiaoxing Zhang
- Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan, Hubei 430068, China
| | - Song Xiao
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
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Hu T, Li Y, Wang Y, Chen Y, Zhang J, Luo E, Lv B, Jia J. Controlled evolution of surface microstructure and phase boundary of ZnO nanoparticles for the multiple sensitization effects on triethylamine detection. NANOSCALE 2024; 16:11774-11785. [PMID: 38864550 DOI: 10.1039/d4nr01135j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
In ZnO gas sensors, donor defects (such as zinc interstitials and oxygen vacancies) are considered active sites for the chemical adsorption and ionization of oxygen on the surface of ZnO, which can significantly enhance the sensor's response. However, the influence of the surface microstructure and phase boundaries of ZnO nanoparticles on the chemical adsorption and ionization of surface oxygen has rarely been explored. In this study, we developed a mixed-phase ZnO nanoparticle gas sensor with a rich phase boundary showing 198-50 ppm improvement in response to triethylamine at 340 °C. This is attributed to the generation of defects originating from lattice mismatch at the ZnO - zincite phase boundaries, which providing more active sites for adsorption of oxygen and triethylamine molecules. This work demonstrates a feasible method of combining surface microstructure regulation with pyrolysis strategies to develop ZnO sensors with significantly enhanced gas response performance.
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Affiliation(s)
- Tianjun Hu
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030032, China.
| | - Yifan Li
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030032, China.
| | - Ying Wang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030032, China.
| | - Yaru Chen
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030032, China.
| | - Junming Zhang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030032, China.
| | - Ergui Luo
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030032, China.
| | - Baoliang Lv
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030032, China.
| | - Jianfeng Jia
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030032, China.
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Chen Z, Liu W, Si X, Guo J, Huo J, Zhang Z, Cheng G, Du Z. In situ assembly of one-dimensional Pt@ZnO nanofibers driven by a ZIF-8 framework for achieving a high-performance acetone sensor. NANOSCALE 2023; 15:17206-17215. [PMID: 37855215 DOI: 10.1039/d3nr04040b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
To obtain a high-performance gas sensor, it is essential to ingeniously design sensing materials containing the features of high catalytic performance, abundant oxygen vacancies, and splendid grain dispersibility through a simple method. Inspired by the fact that ZIF-8 contains semiconductor metal atoms, well-arranged ZnO nanoparticle (NP)-in situ assembled one-dimensional nanofibers (NFs) are obtained by one-step electrospinning. By incorporating Pt NPs into the cavity of ZIF-8 NPs, well-dispersed Pt@ZnO NPs driven by Pt@ZIF-8 composites are obtained after annealing. The well-arranged Pt@ZnO NP-assembled NFs not only exhibit abundant oxygen vacancies but also avoid the self-aggregation of ZnO and Pt NPs. Meanwhile, the small Pt NPs could improve the catalytic effect in return. Therefore, the gas sensor fabricated based on the above materials exhibits an acetone sensitivity of 6.1 at 370 °C, compared with pristine ZnO NFs (1.6, 5 ppm). Moreover, the well-arranged Pt@ZnO NP-assembled NFs show exceptional sensitivity to acetone with a 70.2 ppb-level detection limit in theory. The synergistic advantages of the designed sensing material open up new possibilities for non-invasive disease diagnosis.
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Affiliation(s)
- Zaiping Chen
- Key Lab for Special Functional Materials, Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
| | - Wei Liu
- Key Lab for Special Functional Materials, Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
| | - Xiaohui Si
- Key Lab for Special Functional Materials, Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
| | - Junmeng Guo
- Key Lab for Special Functional Materials, Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
| | - Jiahang Huo
- Key Lab for Special Functional Materials, Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
| | - Zhiheng Zhang
- Key Lab for Special Functional Materials, Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
| | - Gang Cheng
- Key Lab for Special Functional Materials, Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
| | - Zuliang Du
- Key Lab for Special Functional Materials, Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
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Zhang R, Qin C, Bala H, Wang Y, Cao J. Recent Progress in Spinel Ferrite (MFe 2O 4) Chemiresistive Based Gas Sensors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2188. [PMID: 37570506 PMCID: PMC10421214 DOI: 10.3390/nano13152188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/17/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023]
Abstract
Gas-sensing technology has gained significant attention in recent years due to the increasing concern for environmental safety and human health caused by reactive gases. In particular, spinel ferrite (MFe2O4), a metal oxide semiconductor with a spinel structure, has emerged as a promising material for gas-sensing applications. This review article aims to provide an overview of the latest developments in spinel-ferrite-based gas sensors. It begins by discussing the gas-sensing mechanism of spinel ferrite sensors, which involves the interaction between the target gas molecules and the surface of the sensor material. The unique properties of spinel ferrite, such as its high surface area, tunable bandgap, and excellent stability, contribute to its gas-sensing capabilities. The article then delves into recent advancements in gas sensors based on spinel ferrite, focusing on various aspects such as microstructures, element doping, and heterostructure materials. The microstructure of spinel ferrite can be tailored to enhance the gas-sensing performance by controlling factors such as the grain size, porosity, and surface area. Element doping, such as incorporating transition metal ions, can further enhance the gas-sensing properties by modifying the electronic structure and surface chemistry of the sensor material. Additionally, the integration of spinel ferrite with other semiconductors in heterostructure configurations has shown potential for improving the selectivity and overall sensing performance. Furthermore, the article suggests that the combination of spinel ferrite and semiconductors can enhance the selectivity, stability, and sensing performance of gas sensors at room or low temperatures. This is particularly important for practical applications where real-time and accurate gas detection is crucial. In conclusion, this review highlights the potential of spinel-ferrite-based gas sensors and provides insights into the latest advancements in this field. The combination of spinel ferrite with other materials and the optimization of sensor parameters offer opportunities for the development of highly efficient and reliable gas-sensing devices for early detection and warning systems.
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Affiliation(s)
- Run Zhang
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; (R.Z.); (H.B.)
| | - Cong Qin
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
| | - Hari Bala
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; (R.Z.); (H.B.)
| | - Yan Wang
- College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China
- State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454003, China
| | - Jianliang Cao
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
- State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454003, China
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Nguyet TT, Thanh Le DT, Van Duy N, Xuan CT, Ingebrandt S, Vu XT, Hoa ND. A sigh-performance hydrogen gas sensor based on Ag/Pd nanoparticle-functionalized ZnO nanoplates. RSC Adv 2023; 13:13017-13029. [PMID: 37124013 PMCID: PMC10132452 DOI: 10.1039/d3ra01436c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/18/2023] [Indexed: 05/02/2023] Open
Abstract
As a source of clean energy, hydrogen (H2) is a promising alternative to fossil fuels in reducing the carbon footprint. However, due to the highly explosive nature of H2, developing a high-performance sensor for real-time detection of H2 gas at low concentration is essential. Here, we demonstrated the H2 gas sensing performance of Ag/Pd nanoparticle-functionalized ZnO nanoplates. Bimetallic Ag/Pd nanoparticles with an average size of 8 nm were prepared and decorated on the surface of ZnO nanoplates to enhance the H2 gas sensing performance. Compared with pristine ZnO, the sensor based on ZnO nanoplate doped with Ag/Pd (0.025 wt%) exhibited an outstanding response upon exposure to H2 gas (R a/R g = 78 for 500 ppm) with fast response time and speedy recovery. The sensor also showed excellent selectivity for the detection of H2 over the interfering gases (i.e., CO, NH3, H2S, and VOCs). The superior gas sensing of the sensor was dominated by the morphological structure of ZnO, and the synergistic effect of strong adsorption and the optimum catalytic characteristics of the bimetallic Ag/Pd enhances the hydrogen response of the sensors. Thus, bimetallic Ag/Pd-doped ZnO is a promising sensing material for the quantitative determination of H2 concentration towards industrial applications.
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Affiliation(s)
- To Thi Nguyet
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No 1 Dai Co Viet, Hai Ba Trung Ha Noi Vietnam
| | - Dang Thi Thanh Le
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No 1 Dai Co Viet, Hai Ba Trung Ha Noi Vietnam
| | - Nguyen Van Duy
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No 1 Dai Co Viet, Hai Ba Trung Ha Noi Vietnam
| | - Chu Thi Xuan
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No 1 Dai Co Viet, Hai Ba Trung Ha Noi Vietnam
| | - Sven Ingebrandt
- Institute of Materials in Electrical Engineering 1, RWTH Aachen University Sommerfeldstr. 24 Aachen 52074 Germany
| | - Xuan Thang Vu
- Institute of Materials in Electrical Engineering 1, RWTH Aachen University Sommerfeldstr. 24 Aachen 52074 Germany
| | - Nguyen Duc Hoa
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No 1 Dai Co Viet, Hai Ba Trung Ha Noi Vietnam
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Zhu LY, Ou LX, Mao LW, Wu XY, Liu YP, Lu HL. Advances in Noble Metal-Decorated Metal Oxide Nanomaterials for Chemiresistive Gas Sensors: Overview. NANO-MICRO LETTERS 2023; 15:89. [PMID: 37029296 PMCID: PMC10082150 DOI: 10.1007/s40820-023-01047-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 02/25/2023] [Indexed: 06/19/2023]
Abstract
Highly sensitive gas sensors with remarkably low detection limits are attractive for diverse practical application fields including real-time environmental monitoring, exhaled breath diagnosis, and food freshness analysis. Among various chemiresistive sensing materials, noble metal-decorated semiconducting metal oxides (SMOs) have currently aroused extensive attention by virtue of the unique electronic and catalytic properties of noble metals. This review highlights the research progress on the designs and applications of different noble metal-decorated SMOs with diverse nanostructures (e.g., nanoparticles, nanowires, nanorods, nanosheets, nanoflowers, and microspheres) for high-performance gas sensors with higher response, faster response/recovery speed, lower operating temperature, and ultra-low detection limits. The key topics include Pt, Pd, Au, other noble metals (e.g., Ag, Ru, and Rh.), and bimetals-decorated SMOs containing ZnO, SnO2, WO3, other SMOs (e.g., In2O3, Fe2O3, and CuO), and heterostructured SMOs. In addition to conventional devices, the innovative applications like photo-assisted room temperature gas sensors and mechanically flexible smart wearable devices are also discussed. Moreover, the relevant mechanisms for the sensing performance improvement caused by noble metal decoration, including the electronic sensitization effect and the chemical sensitization effect, have also been summarized in detail. Finally, major challenges and future perspectives towards noble metal-decorated SMOs-based chemiresistive gas sensors are proposed.
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Affiliation(s)
- Li-Yuan Zhu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Lang-Xi Ou
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Li-Wen Mao
- School of Opto-Electronic Information and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, People's Republic of China
| | - Xue-Yan Wu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Yi-Ping Liu
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Hong-Liang Lu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China.
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10
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Wang S, Cao J, Zhao Y, Liu X, Guo Y, Chen J, Wang W, Zhang R, Zhang Y, Liu X, Fu Q. Influence of Pt or Au doping on improving the detection of CO by ZnO: A first-principles calculations study. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2023.111908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Si R, Li Y, Tian J, Tan C, Chen S, Lei M, Xie F, Guo X, Zhang S. Cross-Interference of VOCs in SnO 2-Based NO Sensors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:908. [PMID: 36903786 PMCID: PMC10005118 DOI: 10.3390/nano13050908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/16/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
In this work, we studied the influence of cross-interference effects between VOCs and NO on the performance of SnO2 and Pt-SnO2-based gas sensors. Sensing films were fabricated by screen printing. The results show that the response of the SnO2 sensors to NO under air is higher than that of Pt-SnO2, but the response to VOCs is lower than that of Pt-SnO2. The Pt-SnO2 sensor was significantly more responsive to VOCs in the NO background than in air. In the traditional single-component gas test, the pure SnO2 sensor showed good selectivity to VOCs and NO at 300 °C and 150 °C, respectively. Loading noble metal Pt improved the sensitivity to VOCs at high temperature, but also significantly increased the interference to NO sensitivity at low temperature. The explanation for this phenomenon is that the noble metal Pt can catalyze the reaction between NO and VOCs to generate more O-, which further promotes the adsorption of VOCs. Therefore, selectivity cannot be simply determined by single-component gas testing alone. Mutual interference between mixed gases needs to be taken into account.
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Affiliation(s)
- Renjun Si
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yan Li
- Shenzhen Power Supply Co., Ltd., Shenzhen 518002, China
| | - Jie Tian
- Shenzhen Power Supply Co., Ltd., Shenzhen 518002, China
| | - Changshu Tan
- Shenzhen Power Supply Co., Ltd., Shenzhen 518002, China
| | - Shaofeng Chen
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ming Lei
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Luo-Yu Road 1037, Wuhan 430074, China
| | - Feng Xie
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Luo-Yu Road 1037, Wuhan 430074, China
| | - Xin Guo
- Laboratory of Solid State Ionics, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shunping Zhang
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Luo-Yu Road 1037, Wuhan 430074, China
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12
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Wu Y, Li J, Lv M, Zhang X, Gao R, Guo C, Cheng X, Zhou X, Xu Y, Gao S, Major Z, Huo L. Selective detection of trace carbon monoxide at room temperature based on CuO nanosheets exposed to (111) crystal facets. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130041. [PMID: 36166911 DOI: 10.1016/j.jhazmat.2022.130041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 09/18/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
In recent years, carbon monoxide (CO) intoxication incidents occur frequently, and the sensitive detection of CO is particularly significant. At present, most reported carbon monoxide (CO) sensors meet the disadvantage of high working temperature. It is always a challenge to realize the sensitive detection of carbon monoxide at room temperature. In this study, CuO nanosheets exposed more (111) active crystal facets and oxygen vacancy defects were synthesized by a simple and environmentally friendly one-step hydrothermal method. The sensor has good comprehensive gas sensing performance, compared with other sensors that can detect CO at room temperature. The response value to 100 ppm CO at room temperature is as high as 39.6. In addition, it also has excellent selectivity, low detection limit (100 ppb), good reproducibility, moisture resistance and long-term stability (60 days). This excellent gas sensing performance is attributed to the special structural characteristics of 2D materials and the synergistic effect of more active crystal facets exposed on the crystal surface and oxygen vacancy defects. Therefore, it is expected to become a promising sensitive material for rapid and accurate detection of trace CO gas under low energy consumption, reduce the risk of poisoning, and then effectively protect human life safety.
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Affiliation(s)
- Yuanyuan Wu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Ji Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Mingsong Lv
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Xianfa Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Rui Gao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Chuanyu Guo
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Xiaoli Cheng
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Xin Zhou
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Yingming Xu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
| | - Shan Gao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Zoltán Major
- Institute of Polymer Product Engineering, Johannes Kepler University Linz, Austria
| | - Lihua Huo
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
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13
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Effect of Morphological Modification over g-C3N4 on Photocatalytic Hydrogen Evolution Performance of g-C3N4-Pt Photocatalysts. Catalysts 2023. [DOI: 10.3390/catal13010092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
In this study, the morphological properties of g-C3N4 in g-C3N4-Pt photocatalysts were modified by a simple hydrothermal treatment for photocatalytic hydrogen evolution. In addition, the morphological modification effect of g-C3N4 on the hydrogen evolution performance was investigated. The long-time hydrothermal treatment clearly changed the morphology of g-C3N4 by building extended melem units with more oxygen functional groups at the defect edges of the extended melem units, which was evidenced by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) measurements. The different morphological features of g-C3N4 resulted in lower photoluminescence (PL) emission intensity in PL spectra and a smaller semicircle radius in electrochemical impedance spectroscopy (EIS) data. This indicates the more efficient charge separation of the g-C3N4-Pt photocatalyst with a modified morphology. Consequently, morphologically modified g-C3N4-Pt showed a higher photocatalytic hydrogen evolution rate due to the better charge separation efficiency.
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14
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Han W, Yang J, Jiang B, Wang X, Wang C, Guo L, Sun Y, Liu F, Sun P, Lu G. Conductometric ppb-Level CO Sensors Based on In 2O 3 Nanofibers Co-Modified with Au and Pd Species. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3267. [PMID: 36234395 PMCID: PMC9565841 DOI: 10.3390/nano12193267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/11/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Carbon monoxide (CO) is one of the most toxic gases to human life. Therefore, the effective monitoring of it down to ppb level is of great significance. Herein, a series of In2O3 nanofibers modified with Au or Pd species or simultaneous Au and Pd species have been prepared by electrospinning combined with a calcination process. The as-obtained samples are applied for the detection of CO. Gas-sensing investigations indicate that 2 at% Au and 2 at% Pd-co-modified In2O3 nanofibers exhibit the highest response (21.7) to 100 ppm CO at 180 °C, and the response value is ~8.5 times higher than that of pure In2O3 nanofibers. More importantly, the detection limit to CO is about 200 ppb with a response value of 1.23, and is obviously lower than that (6 ppm) of pure In2O3 nanofibers. In addition, the sensor also shows good stability within 19 days. These demonstrate that co-modifying In2O3 nanofibers with suitable amounts of Pd and Au species might be a meaningful strategy for the development of high-performance carbon monoxide gas sensors.
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Affiliation(s)
- Wenjiang Han
- State Key Laboratory of Integrated Optoelectronics, Jilin Key Laboratory of Gas Sensors, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Jiaqi Yang
- State Key Laboratory of Integrated Optoelectronics, Jilin Key Laboratory of Gas Sensors, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Bin Jiang
- State Key Laboratory of Integrated Optoelectronics, Jilin Key Laboratory of Gas Sensors, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Xi Wang
- State Key Laboratory of Integrated Optoelectronics, Jilin Key Laboratory of Gas Sensors, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Chong Wang
- College of Communication Engineering, Jilin University, Changchun 130022, China
| | - Lanlan Guo
- School of Physics and Electronic Information Engineering, Henan Polytechnic University, Jiaozuo 454003, China
| | - Yanfeng Sun
- State Key Laboratory of Integrated Optoelectronics, Jilin Key Laboratory of Gas Sensors, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Fangmeng Liu
- State Key Laboratory of Integrated Optoelectronics, Jilin Key Laboratory of Gas Sensors, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
- International Center of Future Science, Jilin University, Changchun 130012, China
| | - Peng Sun
- State Key Laboratory of Integrated Optoelectronics, Jilin Key Laboratory of Gas Sensors, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
- International Center of Future Science, Jilin University, Changchun 130012, China
| | - Geyu Lu
- State Key Laboratory of Integrated Optoelectronics, Jilin Key Laboratory of Gas Sensors, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
- International Center of Future Science, Jilin University, Changchun 130012, China
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15
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Wan Y, Li J, Ni J, Wang C, Ni C, Chen H. Crystal-facet and microstructure engineering in ZnO for photocatalytic NO oxidation. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:129073. [PMID: 35650731 DOI: 10.1016/j.jhazmat.2022.129073] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/22/2022] [Accepted: 05/02/2022] [Indexed: 06/15/2023]
Abstract
Photocatalysis is believed to be an important way of reducing NO pollutant in air and the facet engineering of semiconducting oxides could enhance the efficiency of the photocatalysis. ZnO nanoparticles with different exposed crystalline facets were successfully synthesized using a hydrothermal method and their photocatalytic degradation towards NO was investigated. The crystals from ZnCl2 precursor were hexagonal mesoporous ones with exposed (0002) facet, while those from zinc acetate were in the form of flakes or wheat ears with enhanced exposure of (101(-)1) facet. Calcination in air imparted an enhanced the textural coefficient of the orientated facets as well as the oxygen defects. The nanocrystals with enhanced (0002) facet and lower flat-band energy did better in photoelectrochemical water-oxidation than those with exposed (101(-)1) facet that showed superior photocatalytic activity (approaching 76.7 ± 0.6% under 365 nm photons) for NO oxidation. According to theoretical calculations, (101(-)1) facet with O termination showed much higher affinity to NO molecules than other configurations, and the oxygen vacancy in ZnO played an minor role in the photocatalytic oxidation of NO. A high quantum efficiency approaching 97.5 ± 1.4% under 275 nm photons was obtained for the ZnO crystals from zinc acetate with mixed (0002) and (101(-)1) facets. This research explores the special characteristics of ZnO with different exposed facets and is important for the future design of highly efficient photocatalyst for hazardous material removal.
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Affiliation(s)
- Yanshan Wan
- College of Resources and Environment, Southwest University, Chongqing 400715, China
| | - Jibiao Li
- Center for Materials and Energy (CME) and Chongqing Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM), Yangtze Normal University, Chongqing 408100, China
| | - Jiupai Ni
- College of Resources and Environment, Southwest University, Chongqing 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in Three Gorges Reservoir Region, Chongqing 400716, China
| | - Chong Wang
- College of Resources and Environment, Southwest University, Chongqing 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in Three Gorges Reservoir Region, Chongqing 400716, China.
| | - Chengsheng Ni
- College of Resources and Environment, Southwest University, Chongqing 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in Three Gorges Reservoir Region, Chongqing 400716, China.
| | - Hong Chen
- College of Resources and Environment, Southwest University, Chongqing 400715, China.
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16
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Zhuang Z, Zhang L, Huang C, Wang X, Guo H, Thomas T, Qu F, Wang P, Yang M. A dimethyl disulfide gas sensor based on nanosized Pt-loaded tetrakaidecahedral α-Fe 2O 3nanocrystals. NANOTECHNOLOGY 2022; 33:405502. [PMID: 35334476 DOI: 10.1088/1361-6528/ac614c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Surface modification by employing precious metals is one of the most effective ways to improve the gas-sensing performance of metal oxide semiconductors. Pureα-Fe2O3nanoparticles and Pt-modifiedα-Fe2O3nanoparticles were prepared sequentially using a rather simple hydrothermal synthesis and impregnation method. Compared with the originalα-Fe2O3nanomaterials, the Pt-α-Fe2O3nanocomposite sensor shows a higher response value (Ra/Rg = 58.6) and a shorter response/recovery time (1 s/168 s) to 100 ppm dimethyl disulfide (DMDS) gas at 375 °C. In addition, it has better selectivity to DMDS gas with the value of more than 9 times higher than the other target gases at 375 °C. This study indicates that the Pt-α-Fe2O3nanoparticle sensor has good prospects and can be used as a low-cost and effective DMDS gas sensor.
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Affiliation(s)
- Ziqin Zhuang
- Materials Science and Engineering Department, Dalian Maritime University, Dalian, 116026, People's Republic of China
| | - Li Zhang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Chaozhu Huang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Xiaohang Wang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Haichuan Guo
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Tiju Thomas
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Adyar, Chennai-600036, Tamil Nadu, India
| | - Fengdong Qu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Pei Wang
- Materials Science and Engineering Department, Dalian Maritime University, Dalian, 116026, People's Republic of China
| | - Minghui Yang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
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17
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Zhang X, Du W, Li Q, Lv C. Highly efficient ethanol vapour detection using g-C 3N 4/ZnO micro flower-like heterostructural composites. RSC Adv 2022; 12:20618-20627. [PMID: 35919170 PMCID: PMC9289812 DOI: 10.1039/d2ra02609k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 07/12/2022] [Indexed: 11/24/2022] Open
Abstract
This work proposes precursor pyrolysis, ultrasonic exfoliation and hydrothermal methods as well as high-temperature calcination strategies to fabricate heterostructured g-C3N4/ZnO composites with excellent ethanol vapour sensing properties. The structure, composition and morphology of the as-prepared g-C3N4/ZnO composites were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). Then, the sensing properties of the g-C3N4/ZnO composites for ethanol (C2H5OH) were studied, and g-C3N4 doping with different mass ratios was used to control the gas-sensing properties of the composites. Compared with pure ZnO and g-C3N4, the performance of g-C3N4 with 1% doping content is the best, and the gas sensing activity of the 1% g-C3N4/ZnO composite is greatly improved at the optimal working temperature (280 °C). The response to 100 ppm ethanol reaches 81.4, which is 3.7 times that of the pure ZnO-based sensor under the same conditions. In addition, the sensor has good selectivity as well as fast response and recovery speeds (24 s and 63 s, respectively). Finally, a reasonable gas sensing enhancement mechanism is proposed, and it is believed that the constructed g-C3N4/ZnO micro flower-like heterostructure and the distinct positions of the valence and conduction bands of ZnO and g-C3N4 lead to the obtained sensor exhibiting a large specific surface area and increased conductivity, thereby improving the g-C3N4/ZnO-based sensor sensing performance. Heterostructural g-C3N4/ZnO composites were synthesized through a facile hydrothermal strategy using as-prepared g-C3N4 nanosheets and precursor solutions of ZnO for effective ethanol detection.![]()
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Affiliation(s)
- Xianfeng Zhang
- Anhui Provincial Engineering Laboratory of Silicon-based Materials, School of Material and Chemical Engineering, Bengbu University, Bengbu 233030, People's Republic of China
| | - Wenjie Du
- Anhui Provincial Engineering Laboratory of Silicon-based Materials, School of Material and Chemical Engineering, Bengbu University, Bengbu 233030, People's Republic of China
| | - Qian Li
- Anhui Provincial Engineering Laboratory of Silicon-based Materials, School of Material and Chemical Engineering, Bengbu University, Bengbu 233030, People's Republic of China
| | - Changpeng Lv
- Anhui Provincial Engineering Laboratory of Silicon-based Materials, School of Material and Chemical Engineering, Bengbu University, Bengbu 233030, People's Republic of China
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18
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Lei M, Gao M, Yang X, Zou Y, Alghamdi A, Ren Y, Deng Y. Size-Controlled Au Nanoparticles Incorporating Mesoporous ZnO for Sensitive Ethanol Sensing. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51933-51944. [PMID: 34110132 DOI: 10.1021/acsami.1c07322] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Zinc oxide (ZnO) as a commonly used semiconductor material has aroused extensive research attention in various fields, such as field-effect transistors, solar cells, luminescent devices, and sensors, because of its excellent light-electrical features and large exciton bonding energy. Herein, ultrasmall Au nanoparticles with tunable size decorated mesoporous ZnO nanospheres were synthesized via facile formaldehyde-assisted metal-ligand cross-linking strategy, where these active Au species could be transferred into Au nanoparticles in the frameworks by various reduction strategies. Typically, mesoporous ZnO-Au with a photoreduction technique showed superior ethanol sensing performance (ca. 159 for 50 ppm at 200 °C) because of its high surface area, dual-mesoporous structure, and interface effect (electron effect, surface catalytic/adsorption). Moreover, the mesoporous ZnO-Au composites by photoreduction show much better performance than those via H2 reduction and NaBH4 reduction, which is ascribed to the providential size of Au nanoparticles (ca. 6.6 nm) and abundant oxygen defects in the composites. In particular, the selectivity and sensitivity of mesoporous ZnO-Au far exceeds those of materials loaded with other noble metals (Pt, Pd, and Ag). The sensing mechanism of mesoporous ZnO-Au for ethanol is attributed to classical surface adsorption/catalytic reaction, where strong sensitization effect (electron and chemical) and the spillover effect of Au nanoparticles in the catalytic reaction cause superior ethanol sensing performances. In situ FTIR and GC-MS measurement revealed that the catalytic oxidation of ethanol follows the process of dehydrogenation and deep oxidation, that is, dehydrogenation to acetaldehyde, and then further oxidation to carbon dioxide and water.
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Affiliation(s)
- Mengli Lei
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Meiqi Gao
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Xuanyu Yang
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Yidong Zou
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Abdulaziz Alghamdi
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Yuan Ren
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Yonghui Deng
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
- State Key Lab of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
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19
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Abstract
In this work, the main objective is to enhance the gas sensing capability through investigating the effect of Al and Mg doping on ZnO based sensors. ZnO, Mg1% doped ZnO, Al5% doped ZnO and (Al5%, Mg1%) co-doped ZnO nanoparticles (NPs) were synthesized by a modified sol-gel method. The structural characterization showed the hexagonal crystalline structure of the prepared samples. Morphological characterizations confirmed the nanometric sizes of the NPs (27–57 nm) and elemental composition investigation proved the existence of Al and Mg with low concentrations. The optical characterization showed the high absorbance of the synthesized samples in the UV range. The gas sensing performances of the synthesized samples, prepared in the form of thick films, were investigated. Sensing tests demonstrated the high influence of the Al and Mg on the sensing performances towards H2 and CO gas, respectively. The 5A1MZO-based sensor exhibits high sensitivity and low detection limits to H2 (<2 ppm) and CO (<1 ppm). It showed a response around 70 (at 250 °C) towards 2000 ppm H2 and 2 (at 250 °C) towards CO.
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20
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Mokrushin AS, Simonenko NP, Simonenko TL, Simonenko EP, Sevast’yanov VG, Kuznetsov NT. Synthesis and Chemoresistive Gas-Sensing Properties of Highly Dispersed Titanium-Doped Nb2O5. RUSS J INORG CHEM+ 2021. [DOI: 10.1134/s0036023621090060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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21
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Liu J, Zhang L, Cheng B, Fan J, Yu J. A high-response formaldehyde sensor based on fibrous Ag-ZnO/In 2O 3 with multi-level heterojunctions. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125352. [PMID: 33930945 DOI: 10.1016/j.jhazmat.2021.125352] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/19/2021] [Accepted: 02/05/2021] [Indexed: 05/14/2023]
Abstract
Timely detection of formaldehyde is pivotal because formaldehyde is slowly released from the indoor decorative materials, jeopardizing our healthy. Herein, a high-response formaldehyde gas sensor based on Ag-ZnO/In2O3 nanofibers was successfully fabricated. Compared with all the control samples, the hybrid exhibits superior sensitivity (0.65 ppm-1), excellent selectivity (≥ 12.5) and durable stability (the deviation value ≤ 3%). Particularly, an ultra-high response value of about 186 towards 100 ppm of formaldehyde at 260 °C was achieved, heading the list of outstanding candidates. Additionally, the limit of detection is as low as 9 ppb. The enhanced gas sensing properties can be mainly attributed to multi-level heterojunctions (n-n heterojunction and Ohmic junction) and the "spill-over" effect of Ag, ultimately increasing the adsorption of gas molecules on the surface of sensing material. This work verifies that proper design of multi-level heterojunctions significantly upgrade the sensing performance.
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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, PR China; Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, PR China
| | - Liuyang Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China.
| | - Bei Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, PR China.
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22
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Pineda-Reyes AM, Herrera-Rivera MR, Rojas-Chávez H, Cruz-Martínez H, Medina DI. Recent Advances in ZnO-Based Carbon Monoxide Sensors: Role of Doping. SENSORS (BASEL, SWITZERLAND) 2021; 21:4425. [PMID: 34203318 PMCID: PMC8272168 DOI: 10.3390/s21134425] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/14/2021] [Accepted: 06/16/2021] [Indexed: 12/27/2022]
Abstract
Monitoring and detecting carbon monoxide (CO) are critical because this gas is toxic and harmful to the ecosystem. In this respect, designing high-performance gas sensors for CO detection is necessary. Zinc oxide-based materials are promising for use as CO sensors, owing to their good sensing response, electrical performance, cost-effectiveness, long-term stability, low power consumption, ease of manufacturing, chemical stability, and non-toxicity. Nevertheless, further progress in gas sensing requires improving the selectivity and sensitivity, and lowering the operating temperature. Recently, different strategies have been implemented to improve the sensitivity and selectivity of ZnO to CO, highlighting the doping of ZnO. Many studies concluded that doped ZnO demonstrates better sensing properties than those of undoped ZnO in detecting CO. Therefore, in this review, we analyze and discuss, in detail, the recent advances in doped ZnO for CO sensing applications. First, experimental studies on ZnO doped with transition metals, boron group elements, and alkaline earth metals as CO sensors are comprehensively reviewed. We then focused on analyzing theoretical and combined experimental-theoretical studies. Finally, we present the conclusions and some perspectives for future investigations in the context of advancements in CO sensing using doped ZnO, which include room-temperature gas sensing.
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Affiliation(s)
- Ana María Pineda-Reyes
- Laboratorio de Investigación y Posgrado en Tecnología Farmacéutica, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Av. 1o. de Mayo S/N, Cuautitlán Izcalli, Estado de Mexico 54740, Mexico;
| | - María R. Herrera-Rivera
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, Nuevo León 64849, Mexico;
| | - Hugo Rojas-Chávez
- Tecnológico Nacional de México, Instituto Tecnológico de Tláhuac II, Camino Real 625, Tláhuac, Ciudad de Mexico 13508, Mexico;
| | - Heriberto Cruz-Martínez
- Tecnológico Nacional de México, Instituto Tecnológico del Valle de Etla, Abasolo S/N, Barrio del Agua Buena, Santiago Suchilquitongo, Oaxaca 68230, Mexico
| | - Dora I. Medina
- Tecnologico de Monterrey, School of Engineering and Sciences, Atizapan de Zaragoza, Estado de Mexico 52926, Mexico
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Zhao R, Wei Q, Ran Y, Kong Y, Ma D, Su L, Yao L, Wang Y. One-dimensional In 2O 3nanorods as sensing material for ppb-level n-butanol detection. NANOTECHNOLOGY 2021; 32:375501. [PMID: 34062528 DOI: 10.1088/1361-6528/ac06f6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/31/2021] [Indexed: 06/12/2023]
Abstract
Effectively and quantificationally detecting hazardous gas n-butanol is very significant in daily life, which can bring about a safe living condition for humans. In this study, the one-dimensional In2O3nanorods were successfully synthesized via hydrothermal route and post-heat treatment. Noticeably, one-dimensional nanorods structures were obtained and the products presented a superior growth orientation along with (222) plane. Additionally, systematical gas-sensing measurements of the sensor made from In2O3nanorods towards hazardous n-butanol gas were conducted. Results exhibited that the fabricated sensor showed excellent n-butanol sensing properties, with aspects to a superior response value of 342.20 with concentration 100 ppm at 240 °C, remarkable selectivity, fast response/recovery times (77.5/34.2 s) and good stability. More interestingly, the detection limit of sensor as low as 500 ppb and a good linearity relationship between response values and n-butanol concentrations was presented. Gas-sensitive properties of this sensor are better than previously reported in n-butanol detection. All results demonstrate that one-dimensional In2O3nanorod is a promising sensor material to practical applications in effectively detecting n-butanol gas.
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Affiliation(s)
- Rongjun Zhao
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Qunyan Wei
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, People's Republic of China
| | - Yan Ran
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Yulin Kong
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Dian Ma
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Linfeng Su
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Lijia Yao
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Yude Wang
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
- Key Lab of Quantum Information of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China
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24
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Liu J, Zhu B, Zhang L, Fan J, Yu J. 0D/2D CdS/ZnO composite with n-n heterojunction for efficient detection of triethylamine. J Colloid Interface Sci 2021; 600:898-909. [PMID: 34058608 DOI: 10.1016/j.jcis.2021.05.082] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 05/13/2021] [Accepted: 05/15/2021] [Indexed: 01/04/2023]
Abstract
It is imperative to seek for novel materials with pronounced gas sensing performance towards triethylamine for the sake of human health. Herein, we successfully fabricate an outstanding triethylamine sensor based on CdS/ZnO composite with 0D/2D structure, which are prepared by in-situ growth of CdS quantum dots on ultra-thin ZnO nanosheets. The ratios between the two ingredients are adjusted and their effect is evaluated. The optimal sample exhibits the lowest operating temperature of 200 °C, the highest response value of ~20 and the fastest response time of 2 s. Besides, it also has the virtues of durable stability, excellent selectivity and superior anti-interference ability. The mechanism behind the aforementioned intriguing performance is investigated by X-ray photoelectron spectroscopy, Kelvin probe and density function theory (DFT) simulation. All the results verify that the enhanced gas sensing properties are derived from splendid 0D/2D structure, n-n heterojunction and large specific surface area. Additionally, this study opens an avenue for designing sensors with 0D/2D structure.
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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, PR China; Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, PR China
| | - Bicheng Zhu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan 430074, PR China
| | - Liuyang Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China.
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, PR China.
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25
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Gangwar P, Sajith P, Ramachandran C. Clustering of carbon dioxide around zinc oxide cluster. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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26
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Chikate PR, Sharma A, Rondiya SR, Cross RW, Dzade NY, Shirage PM, Devan RS. Hierarchically interconnected ZnO nanowires for low-temperature-operated reducing gas sensors: experimental and DFT studies. NEW J CHEM 2021. [DOI: 10.1039/d0nj05231k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The larger surface area and increased point contacts of hierarchically arranged ZnO nanowires (upper panel) offered more potential barriers for the gas molecule exhibiting binding strength CO < C2H5OH < NH3 (lower panel) and provided excellent gas-sensing performance at 100 °C for NH3 gas.
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Affiliation(s)
- Parameshwar R. Chikate
- Department of Metallurgy Engineering & Materials Science
- Indian Institute of Technology Indore
- Simrol
- India
| | - Alfa Sharma
- Department of Metallurgy Engineering & Materials Science
- Indian Institute of Technology Indore
- Simrol
- India
| | | | | | | | - Parasharam M. Shirage
- Department of Metallurgy Engineering & Materials Science
- Indian Institute of Technology Indore
- Simrol
- India
| | - Rupesh S. Devan
- Department of Metallurgy Engineering & Materials Science
- Indian Institute of Technology Indore
- Simrol
- India
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27
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Fiedot-Toboła M, Suchorska-Woźniak P, Startek K, Rac-Rumijowska O, Szukiewicz R, Kwoka M, Teterycz H. Correlation between Microstructure and Chemical Composition of Zinc Oxide Gas Sensor Layers and Their Gas-Sensitive Properties in Chlorine Atmosphere. SENSORS (BASEL, SWITZERLAND) 2020; 20:E6951. [PMID: 33291379 PMCID: PMC7730158 DOI: 10.3390/s20236951] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 01/24/2023]
Abstract
In this article, we present results concerning the impact of structural and chemical properties of zinc oxide in various morphological forms and its gas-sensitive properties, tested in an atmosphere containing a very aggressive gas such as chlorine. The aim of this research was to understand the mechanism of chlorine detection using a resistive gas sensor with an active layer made of zinc oxide with a different structure and morphology. Two types of ZnO sensor layers obtained by two different technological methods were used in sensor construction. Their morphology, crystal structure, specific surface area, porosity, surface chemistry and structural defects were characterized, and then compared with gas-sensitive properties in a chlorine-containing atmosphere. To achieve this goal, scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and photoluminescence spectroscopy (PL) methods were used. The sensing properties of obtained active layers were tested by the temperature stimulated conductance method (TSC). We have noticed that their response in a chlorine atmosphere is not determined by the size of the specific surface or porosity. The obtained results showed that the structural defects of ZnO crystals play the most important role in chlorine detection. We demonstrated that Cl2 adsorption is a concurrent process to oxygen adsorption. Both of them occur on the same active species (oxygen vacancies). Their concentration is higher on the side planes of the zinc oxide crystal than the others. Additionally, ZnO sublimation process plays an important role in the chlorine detection mechanism.
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Affiliation(s)
- Marta Fiedot-Toboła
- Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland; (P.S.-W.); (O.R.-R.); (H.T.)
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (K.S.); (R.S.)
| | - Patrycja Suchorska-Woźniak
- Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland; (P.S.-W.); (O.R.-R.); (H.T.)
| | - Kamila Startek
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (K.S.); (R.S.)
| | - Olga Rac-Rumijowska
- Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland; (P.S.-W.); (O.R.-R.); (H.T.)
| | - Rafał Szukiewicz
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (K.S.); (R.S.)
- Institute of Experimental Physics, University of Wroclaw, Maxa Borna 9, 50-204 Wroclaw, Poland
| | - Monika Kwoka
- Department of Cybernetics, Nanotechnology and Data Processing, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland;
| | - Helena Teterycz
- Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland; (P.S.-W.); (O.R.-R.); (H.T.)
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28
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Liang Q, Qu X, Bai N, Chen H, Zou X, Li GD. Alkali metal-incorporated spinel oxide nanofibers enable high performance detection of formaldehyde at ppb level. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123301. [PMID: 32947706 DOI: 10.1016/j.jhazmat.2020.123301] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/06/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
Sensing material with high sensitivity, excellent selectivity and ultra-low detection limit is crucial for monitoring formaldehyde, which is a kind of hazardous gas to human health at very low concentration. Some one-dimensional semiconductor metal oxides show acceptable responses towards formaldehyde. However, the detection limit and selectivity of these sensors are still not satisfied, especially at ppb level. Herein, alkali metals (K, Na) doped CdGa2O4 nanofibers with excellent formaldehyde sensing performance are prepared by an electrospinning method. These nanofibers have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), electron paramagnetic resonance spectroscopy (EPR), elemental mapping and other techniques. As a result, the sensor based on 7.5 at.% K doped CdGa2O4 gives remarkably improved formaldehyde sensing properties compared with that of pristine CdGa2O4. The greatly increased sensitivity and selectivity should be attributed to the increased chemisorbed oxygen and the enhanced basicity caused by the additional alkali metal, respectively. All in all, the 7.5 at.% K doped CdGa2O4 is a good candidate for the rapid detecting formaldehyde at ppb level.
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Affiliation(s)
- Qihua Liang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China
| | - Xuejian Qu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China
| | - Ni Bai
- School of Mechanical and Metallurgical Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, PR China
| | - Hui Chen
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China
| | - Xiaoxin Zou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China
| | - Guo-Dong Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China.
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29
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Effect of the Morphology and Electrical Property of Metal-Deposited ZnO Nanostructures on CO Gas Sensitivity. NANOMATERIALS 2020; 10:nano10112124. [PMID: 33120867 PMCID: PMC7692783 DOI: 10.3390/nano10112124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/20/2020] [Accepted: 10/25/2020] [Indexed: 12/03/2022]
Abstract
The development of a highly sensitive gas sensor for toxic gases is an important issue in that it can reduce the damage caused by unexpected gas leaks. In this regard, in order to make the sensor accurate and highly responsive, we have investigated which morphology is effective to improve the sensitivity and how the deposited nanoparticle affects the sensitivity by controlling the morphology of semiconductor oxides—either nanorod or nanoplate—and depositing metal nanoparticles on the semiconductor surface. In this study, we compared the CO gas sensitivity for sensors with different morphology (rod and plate) of ZnO nanostructure with metal nanoparticles (gold and copper) photodeposited and investigated the correlation between the gas sensitivity and some factors such as the morphology of ZnO and the properties of the deposited metal. Among the samples, Au/ZnO nanorod showed the best response (~86%) to the exposure of 100 ppm CO gas at 200 °C. The result showed that the electrical properties due to the deposition of metal species also have a strong influence on the sensor properties such as sensor response, working temperature, the response and recovery time, etc., together with the morphology of ZnO.
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30
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Wang C, Li Y, Gong F, Zhang Y, Fang S, Zhang H. Advances in Doped ZnO Nanostructures for Gas Sensor. CHEM REC 2020; 20:1553-1567. [DOI: 10.1002/tcr.202000088] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Chao‐Nan Wang
- College of Materials and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Yu‐Liang Li
- College of Materials and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Fei‐Long Gong
- College of Materials and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Yong‐Hui Zhang
- College of Materials and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Shao‐Ming Fang
- College of Materials and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Hao‐Li Zhang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) Key Laboratory of Special Function Materials and Structure Design (MOE) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
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31
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Wang D, Zhao J. Al-doped hexa-peri-hexabenzocoronene nanographene as an electronic CO gas sensor. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.112880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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32
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Wang P, Yang L, Li J, Sadeh B. Zn/ZnO Heterostructure for the Application of MO Degradation and NO Removal. Catal Letters 2020. [DOI: 10.1007/s10562-020-03102-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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