1
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Zhu S, Fan H, Lei L, Fan Y, Wang W. High sensitivity and selectivity of h-BN/WO 3 n-n heterojunction at low-temperature for triethylamine sensing. CHEMOSPHERE 2024:143522. [PMID: 39395477 DOI: 10.1016/j.chemosphere.2024.143522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2024] [Revised: 09/06/2024] [Accepted: 10/09/2024] [Indexed: 10/14/2024]
Abstract
Due to the unique properties of heterojunction interfaces, heterojunction materials have broad application prospects in gas sensors. In this work, a facile and economical two-step synthesis method was employed to fabricate h-BN/WO3 heterojunctions, exhibiting excellent performance in triethylamine (TEA) detection. The results indicate that compared to pure WO3 sensors, h-BN/WO3 sensors exhibit superior TEA sensing capabilities, with an excellent response of 281.45 to 20 ppm TEA at 100 °C, which is 3.4 times higher. Moreover, h-BN/WO3 sensors demonstrate favorable response times, low detection limits, and good stability. These significant enhancements are attributed to the increase in oxygen vacancies and the establishment of heterojunctions between h-BN and WO3. Heterojunctions can regulate the concentration and transport rate of charge carriers, as well as the interface potential barrier, thereby affecting the gas sensing processes. This work may promote the further development of sensing materials and the practical application of WO3 sensors in TEA detection.
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Affiliation(s)
- Shuwen Zhu
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnic University, Xi'an 710072, China
| | - Huiqing Fan
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnic University, Xi'an 710072, China.
| | - Lin Lei
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnic University, Xi'an 710072, China
| | - Yongbo Fan
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom 100872, Hong Kong, PR China
| | - Weijia Wang
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnic University, Xi'an 710072, China.
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2
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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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3
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Saadh MJ, Ahmed AT, Mahal A, Chandra S, Almajed MA, Alotaibi HF, Hamoody AHM, Shakir MN, Zainul R. Assessing the gas sensing capability of undoped and doped aluminum nitride nanotubes. J Mol Model 2024; 30:153. [PMID: 38691244 DOI: 10.1007/s00894-024-05953-w] [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: 03/29/2024] [Accepted: 04/20/2024] [Indexed: 05/03/2024]
Abstract
CONTEXT CO2 and CO gas sensors are very important to recognize the insulation situation of electrical tools. ToCO explore the application of noble metal doped of aluminum nitride nanotubes for gas sensors, DFT computations according to the first principal theory were applied to study sensitivity, adsorption attributes, and electronic manner. In this investigation, platinum-doped aluminum nitride nanotubes were offered for the first time to analyze the adsorption towards CO2 and CO gases. Firm construction of platinum-doped aluminum nitride nanotubes (Pt-AlNNT) was investigated in four feasible places, and the binding energy of firm construction is 1.314 eV. Respectively, the adsorption energy between the CO2 and Pt-AlNNT systems was - 2.107 eV, while for instance of CO, the adsorption energy was - 3.258 eV. The mentioned analysis and computations are considerable for studying Pt-AlNNT as a new CO2 and CO gas sensor for electrical tools insulation. The current study revealed that the Pt-AlNNT possesses high selectivity and sensitivity towards CO2 and CO. METHODS In this research, Pt-doped AlNNT (Pt-AlNNT) has been studied as sensing materials of CO and CO2 for the first time. The adsorption process of Pt-AlNNT has been computed and analyzed through the DFT approach. DFT computations by using B3LYP functional and 6-31 + G* basis sets have been applied in the GAMESS code for sensing attributes, which contribute to potential applications.
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Affiliation(s)
- Mohamed J Saadh
- Faculty of Pharmacy, Middle East University, Amman, 11831, Jordan
| | - Abdulrahman T Ahmed
- Department of Nursing, Al-Maarif University College, Ramadi, Al-Anbar Governorate, Iraq
| | - Ahmed Mahal
- Department of Medical Biochemical Analysis, College of Health Technology, Cihan University-Erbil, Erbil, Kurdistan Region, Iraq
| | - Subhash Chandra
- Department of Electrical Engineering, GLA University, Mathura, 281406, India
| | - Mohammed A Almajed
- College of Technical Engineering, National University of Science and Technology, Dhi Qar, 64001, Iraq
| | - Hadil Faris Alotaibi
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, 11671, Riyadh, Saudi Arabia
| | - Abdul-Hameed M Hamoody
- Department of Medical Laboratories Technology, Al-Hadi University College, Baghdad, 10011, Iraq
| | - Maha Noori Shakir
- Department of Medical Laboratories Technology, AL-Nisour University College, Baghdad, Iraq
| | - Rahadian Zainul
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang, Indonesia.
- Center for Advanced Material Processing, Artificial Intelligence, and Biophysics Informatics (CAMPBIOTICS), Universitas Negeri Padang, Padang, Indonesia.
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4
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Cao Z, Jing R, Ma S, Wang J, Hu G, Wei G, Luo Q. Theoretical study on the interaction between acetone and BN monolayer doped with Ni for the clinical diagnosis of diabetes mellitus. NANOTECHNOLOGY 2023; 34:445102. [PMID: 37489853 DOI: 10.1088/1361-6528/acea29] [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: 05/15/2023] [Accepted: 07/25/2023] [Indexed: 07/26/2023]
Abstract
Endogenous volatile organic compounds (VOCs) in human exhaled gases can reflect human health status and be used for clinical diagnosis and health monitoring. Acetone is the sign VOC gases of diabetes mellitus. In order to find a potential material for the detection of acetone in the application of the clinical diagnosis of diabetes mellitus. The adsorption properties, including adsorption energy, adsorption distance, charge transfer, density of states, electron localization function and electrons density difference, of acetone on BN monolayer doped with Ni were comprehensively investigated based on density functional theory. The results show that there could be chemisorption between acetone and Ni-BN monolayer and Ni-BN monolayer is probably suitable gas sensitive material for the detection of acetone in the application of diabetes mellitus monitoring and clinical diagnosis.
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Affiliation(s)
- Zhengqin Cao
- College of Electrical Engineering, Chongqing University of Science and Technology, Chongqing, People's Republic of China
| | - Renjun Jing
- College of Electrical Engineering, Chongqing University of Science and Technology, Chongqing, People's Republic of China
| | - Shouxiao Ma
- Institute of Water Resources and Electric Power, Qinghai University, Xining City, Qinghai Province, People's Republic of China
| | - Jia Wang
- College of Medical Informatics, Chongqing Medical University, Chongqing, People's Republic of China
| | - Gang Hu
- College of Electrical Engineering, Chongqing University of Science and Technology, Chongqing, People's Republic of China
| | - Gang Wei
- College of Electrical Engineering, Chongqing University of Science and Technology, Chongqing, People's Republic of China
| | - Qiming Luo
- College of Electrical Engineering, Chongqing University of Science and Technology, Chongqing, People's Republic of China
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5
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Pereira Silva AL, Varela Júnior JDJG. Density Functional Theory Study of Cu-Modified B 12N 12 Nanocage as a Chemical Sensor for Carbon Monoxide Gas. Inorg Chem 2023; 62:1926-1934. [PMID: 36166839 DOI: 10.1021/acs.inorgchem.2c01621] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The development of efficient B12N12-based toxic gas sensors has received considerable attention from the scientific community. Thus, in this regard, quantum chemical calculations were performed using density functional theory (DFT) at the B97D/6-31G(d,p) level for all of the studied systems. Modification of copper on B12N12 results in five optimized structures, named CuB11N12 and B12N11Cu (doped structures), Cu@b66 and Cu@b64 (decorated structures), and Cu@B12N12 (encapsulated structure). The results indicate that the CO gas weakly physisorbed on the B12N12 nanocage. It was found that the gas adsorption performance of B12N12 is improved due to the introduction of the Cu atom, but the interaction between CO and B12N11Cu, Cu@B12N12, Cu@b64, and Cu@b66 nanocages is strong, limiting the applications as a sensor. Particularly, the CuB11N12 system shows moderate adsorption (Eads = -0.6 eV) and a high electronic sensitivity (ΔEgap = 81.6%) toward CO gas, compared to other modified systems. Furthermore, based on the sensor performance analysis, it was found that CuB11N12 presented low recovery time (14 ms) and high selectivity for CO detection, making it a promising fast response sensor. Finally, our results demonstrated the capability of CuB11N12 as a superior sensor material for applications involving the selective detection of CO gas.
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Affiliation(s)
- Adilson Luís Pereira Silva
- Universidade Estadual do Maranhão, 65055-310, São Luís, MA, Brazil.,Universidade Federal do Maranhão, 65080-805, São Luís, MA, Brazil
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6
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Gao R, Yong Y, Yuan X, Hu S, Hou Q, Kuang Y. First-Principles Investigation of Adsorption Behaviors and Electronic, Optical, and Gas-Sensing Properties of Pure and Pd-Decorated GeS 2 Monolayers. ACS OMEGA 2022; 7:46440-46451. [PMID: 36570267 PMCID: PMC9774342 DOI: 10.1021/acsomega.2c05142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
The extensive applications of two-dimensional (2D) transition metal disulfides in gas sensing prompt us to explore the adsorption, electronic, optical, and gas-sensing properties of the pure and Pd-decorated GeS2 monolayers interacting with NO2, NO, CO2, CO, SO2, NH3, H2S, HCN, HF, CH4, N2, and H2 gases by using first-principles methods. Our results showed that the pure GeS2 monolayer is not appropriate to develop gas sensors. The stability of the Pd-decorated GeS2 (Pd-GeS2) monolayer was determined by binding energy, transition state theory, and molecular dynamics simulations, and the Pd decoration has a significant effect on adsorption strength and the change in electronic properties (especially electrical conductivity). The Pd-GeS2 monolayer-based sensor has relatively high sensitivity toward NO and NO2 gases with moderate recovery time. In addition, the adsorption of NO and NO2 can conspicuously change the optical properties of the Pd-GeS2 monolayer. Therefore, the Pd-GeS2 monolayer is predicted to be reusable and a highly sensitive (optical) gas sensing material for the detection of NO and NO2.
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Affiliation(s)
- Ruilin Gao
- School
of Physics and Engineering, Henan Key Laboratory of Photoelectric
Energy Storage Materials and Applications, Henan University of Science and Technology, Luoyang471023, China
| | - Yongliang Yong
- School
of Physics and Engineering, Henan Key Laboratory of Photoelectric
Energy Storage Materials and Applications, Henan University of Science and Technology, Luoyang471023, China
- Longmen
Laboratory, Luoyang, Henan471003, China
| | - Xiaobo Yuan
- School
of Physics and Engineering, Henan Key Laboratory of Photoelectric
Energy Storage Materials and Applications, Henan University of Science and Technology, Luoyang471023, China
| | - Song Hu
- School
of Physics and Engineering, Henan Key Laboratory of Photoelectric
Energy Storage Materials and Applications, Henan University of Science and Technology, Luoyang471023, China
| | - Qihua Hou
- School
of Physics and Engineering, Henan Key Laboratory of Photoelectric
Energy Storage Materials and Applications, Henan University of Science and Technology, Luoyang471023, China
| | - Yanmin Kuang
- Institute
of Photobiophysics, School of Physics and Electronics, Henan University, Kaifeng475004, China
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7
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Zhang K, Yao W, Jin Y, Jia Z, Wu X, Dong D. Favourable adsorption and sensing properties of Pd-doped SnSSe monolayer towards H 2 and C 2H 2 in the oil-immersed transformers. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2093288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Keyong Zhang
- State Grid Pingdingshan Electric Power supply company, Henan, People’s Republic of China
| | - Wei Yao
- State Grid Henan Electric Power Research Institute, Henan, People’s Republic of China
| | - Yaoke Jin
- State Grid Pingdingshan Electric Power supply company, Henan, People’s Republic of China
| | - Zihao Jia
- State Grid Pingdingshan Electric Power supply company, Henan, People’s Republic of China
| | - Xibo Wu
- State Grid Henan Electric Power Research Institute, Henan, People’s Republic of China
| | - Dalei Dong
- State Grid Henan Electric Power Research Institute, Henan, People’s Republic of China
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8
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Shahriar R, Hassan O, Alam MK. Adsorption of gas molecules on buckled GaAs monolayer: a first-principles study. RSC Adv 2022; 12:16732-16744. [PMID: 35754891 PMCID: PMC9169617 DOI: 10.1039/d2ra02030k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/30/2022] [Indexed: 11/30/2022] Open
Abstract
The design of sensitive and selective gas sensors can be significantly simplified if materials that are intrinsically selective to target gas molecules can be identified. In recent years, monolayers consisting of group III-V elements have been identified as promising gas sensing materials. In this article, we investigate gas adsorption properties of buckled GaAs monolayer using first-principles calculations within the framework of density functional theory. We examine the adsorption energy, adsorption distance, charge transfer, and electron density difference to study the strength and nature of adsorption. We calculate the change in band structure, work function, conductivity, density of states, and optical reflectivity for analyzing its prospect as work function-based, chemiresistive, optical, and magnetic gas sensor applications. In this regard, we considered the adsorption of ten gas molecules, namely NH3, NO2, NO, CH4, H2, CO, SO2, HCN, H2S, and CO2, and noticed that GaAs monolayer is responsive to NO, NO2, NH3, and SO2 only. Specifically, NH3, SO2 and NO2 chemisorb on the GaAs monolayer and change the work function by more than 5%. While both NO and NO2 are found to be responsive in the far-infrared (FIR) range, NO shows better spin-splitting property and a significant change in conductivity. Moreover, the recovery time at room temperature for NO is observed to be in the sub-millisecond range suggesting selective and sensitive NO response in GaAs monolayer.
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Affiliation(s)
- Rifat Shahriar
- Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology Dhaka 1205 Bangladesh
| | - Orchi Hassan
- Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology Dhaka 1205 Bangladesh
| | - Md Kawsar Alam
- Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology Dhaka 1205 Bangladesh
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9
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Li T, Shang D, Gao S, Wang B, Kong H, Yang G, Shu W, Xu P, Wei G. Two-Dimensional Material-Based Electrochemical Sensors/Biosensors for Food Safety and Biomolecular Detection. BIOSENSORS 2022; 12:314. [PMID: 35624615 PMCID: PMC9138342 DOI: 10.3390/bios12050314] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/04/2022] [Accepted: 05/07/2022] [Indexed: 05/28/2023]
Abstract
Two-dimensional materials (2DMs) exhibited great potential for applications in materials science, energy storage, environmental science, biomedicine, sensors/biosensors, and others due to their unique physical, chemical, and biological properties. In this review, we present recent advances in the fabrication of 2DM-based electrochemical sensors and biosensors for applications in food safety and biomolecular detection that are related to human health. For this aim, firstly, we introduced the bottom-up and top-down synthesis methods of various 2DMs, such as graphene, transition metal oxides, transition metal dichalcogenides, MXenes, and several other graphene-like materials, and then we demonstrated the structure and surface chemistry of these 2DMs, which play a crucial role in the functionalization of 2DMs and subsequent composition with other nanoscale building blocks such as nanoparticles, biomolecules, and polymers. Then, the 2DM-based electrochemical sensors/biosensors for the detection of nitrite, heavy metal ions, antibiotics, and pesticides in foods and drinks are introduced. Meanwhile, the 2DM-based sensors for the determination and monitoring of key small molecules that are related to diseases and human health are presented and commented on. We believe that this review will be helpful for promoting 2DMs to construct novel electronic sensors and nanodevices for food safety and health monitoring.
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Affiliation(s)
- Tao Li
- College of Textile & Clothing, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China;
| | - Dawei Shang
- Qingdao Product Quality Testing Research Institute, No. 173 Shenzhen Road, Qingdao 266101, China;
| | - Shouwu Gao
- State Key Laboratory, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (S.G.); (P.X.)
| | - Bo Wang
- Qingdao Institute of Textile Fiber Inspection, No. 173 Shenzhen Road, Qingdao 266101, China; (B.W.); (W.S.)
| | - Hao Kong
- College of Chemistry and Chemical Engineering, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (H.K.); (G.Y.)
| | - Guozheng Yang
- College of Chemistry and Chemical Engineering, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (H.K.); (G.Y.)
| | - Weidong Shu
- Qingdao Institute of Textile Fiber Inspection, No. 173 Shenzhen Road, Qingdao 266101, China; (B.W.); (W.S.)
| | - Peilong Xu
- State Key Laboratory, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (S.G.); (P.X.)
| | - Gang Wei
- College of Chemistry and Chemical Engineering, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (H.K.); (G.Y.)
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10
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Gao L, Feng P, Sun Y, Jia L. Pd-decorated C3N monolayer as a potential toxic gas sensor in dry-type transformers: A first-principles study. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113611] [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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11
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Adsorption of H2 and C2H2 onto Rh-decorated InN monolayer and the effect of applied electric field. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2027535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Lu Y, jiangling T, Zhang J, Zhang Q, Li L, Xu Y. Adsorption of nitrogen oxide on modified BN nanosheets: Improved gas sensing and functionalization. NEW J CHEM 2022. [DOI: 10.1039/d1nj05829k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The sensing mechanism of modified hexagonal boron nitride to nitrogen oxide molecules (NO, NO2 and N2O) was systematically investigated by using the density functional theory calculations. The results indicate that...
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13
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Adsorption of NO and NO
2
on Rh‐Doped Hexagonal Boron Nitride Monolayers: A First‐Principles Study. ChemistrySelect 2021. [DOI: 10.1002/slct.202103567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Li JY, Wang P, Akram S. Adsorption and sensing for SF 6 decomposed gases by Pt-BN monolayer: a DFT study. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1950856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jia-Yu Li
- College of Electrical Engineering and Information Technology, Sichuan University, Chengdu, People’s Republic of China
| | - Peng Wang
- College of Electrical Engineering and Information Technology, Sichuan University, Chengdu, People’s Republic of China
| | - Shakeel Akram
- College of Electrical Engineering and Information Technology, Sichuan University, Chengdu, People’s Republic of China
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15
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Fan G, Wang X, Tu X, Xu H, Wang Q, Chu X. Density functional theory study of Cu-doped BNNT as highly sensitive and selective gas sensor for carbon monoxide. NANOTECHNOLOGY 2021; 32:075502. [PMID: 33113514 DOI: 10.1088/1361-6528/abc57a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The adsorption of CO, CO2, CH4, H2, N2 and N2O on armchair (5,5) boron nitride nanotube (BNNT) with and without the doping of transition metals (TM), i.e. Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu or Zn, was investigated using the density functional theory calculation. The results indicate all the considered gases are physically adsorbed by weak interaction on the pure BNNT, revealing that pure BNNT has poor sensing performance for these gases. TM are then doped in the B or N vacancy of BNNT to improve the sensitivity and selectivity. As a result, it was found that the gas adsorption performance of BNNT is obviously enhanced due to the introduction of TM dopant atom. In particularly, according to the results of adsorption energy, Cu doped BNNT (Cu-BNNT) system shows a high selectivity toward CO molecule compared with other metal doped systems. This is further confirmed by the density of state, energy gap and charge transfer analyses. Furthermore, based on the sensor performance analysis, it was found that Cu-BNNT also has favorable desorption characteristics for CO. Therefore, this study concluded that Cu-BNNT can be used as a superior sensor material with high sensitivity, selectivity and favorable recycle time for CO gas.
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Affiliation(s)
- Guohong Fan
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
| | - Xiaohua Wang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
| | - Xianxian Tu
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
| | - Hong Xu
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
| | - Qi Wang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
| | - Xiangfeng Chu
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
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16
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The Adsorption and Sensing Performances of Ir-modified MoS 2 Monolayer toward SF 6 Decomposition Products: A DFT Study. NANOMATERIALS 2021; 11:nano11010100. [PMID: 33406690 PMCID: PMC7824282 DOI: 10.3390/nano11010100] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 09/18/2020] [Accepted: 09/21/2020] [Indexed: 11/23/2022]
Abstract
In this paper, the Ir-modified MoS2 monolayer is suggested as a novel gas sensor alternative for detecting the characteristic decomposition products of SF6, including H2S, SO2, and SOF2. The corresponding adsorption properties and sensing behaviors were systematically studied using the density functional theory (DFT) method. The theoretical calculation indicates that Ir modification can enhance the surface activity and improve the conductivity of the intrinsic MoS2. The physical structure formation, the density of states (DOS), deformation charge density (DCD), molecular orbital theory analysis, and work function (WF) were used to reveal the gas adsorption and sensing mechanism. These analyses demonstrated that the Ir-modified MoS2 monolayer used as sensing material displays high sensitivity to the target gases, especially for H2S gas. The gas sensitivity order and the recovery time of the sensing material to decomposition products were reasonably predicted. This contribution indicates the theoretical possibility of developing Ir-modified MoS2 as a gas sensor to detect characteristic decomposition gases of SF6.
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Zhou Q, Zhang G, Tian S, Zhang X. First-Principles Insight into Pd-Doped ZnO Monolayers as a Promising Scavenger for Dissolved Gas Analysis in Transformer Oil. ACS OMEGA 2020; 5:17801-17807. [PMID: 32715266 PMCID: PMC7377366 DOI: 10.1021/acsomega.0c02592] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
ZnO monolayers with desirable n-type semiconducting properties are full of potential for sensing applications. In this work, we investigate using first-principles theory the adsorption and sensing behaviors of Pd-doped ZnO (Pd-ZnO) monolayers with two typical dissolved gases, namely, H2 and C2H2, to explore their sensing use for dissolved gas analysis in transformer oil. For Pd doping on the pristine ZnO monolayer, the TO site is identified as the most stable configuration with an E b of -1.44 eV. For the adsorption of H2 and C2H2, chemisorption is determined given the large adsorption energy (E ad) and formation of new bonds. Analyses of the charge density difference and density of state provide evidence of the strong binding force of Pd-H and Pd-C bonds, while band structure analysis provides the sensing mechanism of the Pd-ZnO monolayer as a resistance-type sensor for H2 and C2H2 detection with high electrical responses. Also, analysis of the work function (WF) provides the possibility of selective detection of H2 and C2H2 using a Pd-ZnO monolayer-based field-effect transistor sensor given the opposite changing trend of the WF after their adsorption. Our work may broaden the application of ZnO-based gas sensors for application in the field of electrical engineering.
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Affiliation(s)
- Qian Zhou
- School
of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068, China
- State
Gird Chongqing Electric Power Company, Chongqing 400015, China
| | - Guozhi Zhang
- School
of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Shuangshuang Tian
- School
of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Xiaoxing Zhang
- School
of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068, China
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