1
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Hambir S, Shinde S, Pathan HM, Kaushik SD, Rout CS, Jagtap S. 2H-SnS 2 assembled with petaloid 1T@2H-MoS 2 nanosheet heterostructures for room temperature NO 2 gas sensing. RSC Adv 2024; 14:24130-24140. [PMID: 39091376 PMCID: PMC11293367 DOI: 10.1039/d4ra03194f] [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: 04/30/2024] [Accepted: 07/23/2024] [Indexed: 08/04/2024] Open
Abstract
In this study, we explored the gas-sensing capabilities of MoS2 petaloid nanosheets in the metallic 1T phase with the commonly investigated semiconducting 2H phase. By synthesizing SnS2 nanoparticles and MoS2 petaloid nanosheets through a hydrothermal method, we achieve notable sensing performance for NO2 gas at room temperature (27 °C). This investigation represents a novel study, and to the best of our knowledge no, prior similar investigations have been reported in the literature for 1T@2HMoS2/SnS2 heterostructures for room temperature NO2 gas sensing. The formed heterostructure between SnS2 nanoparticles and petaloid MoS2 nanosheets exhibits synergistic effects, offering highly active sites for NO2 gas adsorption, consequently enhancing sensor response. Our sensor demonstrated a remarkable sensing response (R a/R g = 7.49) towards 1 ppm of NO2, rapid response time of 54 s, baseline recovery in 345 s, good selectivity and long-term stability, underscoring its potential for practical gas-sensing applications.
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Affiliation(s)
- Shraddha Hambir
- Department of Physics, Savitribai Phule Pune University India
- Department of Electronic and Instrumentation Science, Savitribai Phule Pune University India
| | - Shashikant Shinde
- MES's Department of Physics, Nowrosjee Wadia College Pune 411001 India
| | - H M Pathan
- Department of Physics, Savitribai Phule Pune University India
| | - Som Datta Kaushik
- UGC-DAE Consortium for Scientific Research Mumbai Centre, BARC Mumbai India
| | - Chandra Sekhar Rout
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus Ramanagaram Bangalore India
| | - Shweta Jagtap
- Department of Electronic and Instrumentation Science, Savitribai Phule Pune University India
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2
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Meng D, Xie Z, Wang M, Xu J, San X, Qi J, Zhang Y, Wang G, Jin Q. In Situ Fabrication of SnS 2/SnO 2 Heterostructures for Boosting Formaldehyde-Sensing Properties at Room Temperature. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2493. [PMID: 37687001 PMCID: PMC10563078 DOI: 10.3390/nano13172493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 08/24/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023]
Abstract
Formaldehyde, as a harmful gas produced by materials used for decorative purposes, has a serious impact on human health, and is also the focus and difficulty of indoor environmental polution prevention; hence, designing and developing gas sensors for the selective measurement of formaldehyde at room temperature is an urgent task. Herein, a series of SnS2/SnO2 composites with hollow spherical structures were prepared by a facile hydrothermal approach for the purpose of formaldehyde sensing at room temperature. These novel hierarchical structured SnS2/SnO2 composites-based gas sensors demonstrate remarkable selectivity towards formaldehyde within the concentration range of sub-ppm (0.1 ppm) to ppm (10 ppm) at room temperature. Notably, the SnS2/SnO2-2 sensor exhibits an exceptional formaldehyde-sensing performance, featuring an ultra-high response (1.93, 0.1 ppm and 17.51, 10 ppm), as well as good repeatability, long-term stability, and an outstanding theoretical detection limit. The superior sensing capabilities of the SnS2/SnO2 composites can be attributed to multiple factors, including enhanced formaldehyde adsorption, larger specific surface area and porosity of the hollow structure, as well as the synergistic interfacial incorporation of the SnS2/SnO2 heterojunction. Overall, the excellent gas sensing performance of SnS2/SnO2 hollow spheres has opened up a new way for their detection of trace formaldehyde at room temperature.
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Affiliation(s)
- Dan Meng
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China; (D.M.); (Z.X.); (Y.Z.); (G.W.)
| | - Zongsheng Xie
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China; (D.M.); (Z.X.); (Y.Z.); (G.W.)
| | - Mingyue Wang
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia;
| | - Juhua Xu
- Key Laboratory of Automobile Materials (Ministry of Education), School of Materials Science and Engineering, Jilin University, Changchun 130022, China;
| | - Xiaoguang San
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China; (D.M.); (Z.X.); (Y.Z.); (G.W.)
| | - Jian Qi
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
| | - Yue Zhang
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China; (D.M.); (Z.X.); (Y.Z.); (G.W.)
| | - Guosheng Wang
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China; (D.M.); (Z.X.); (Y.Z.); (G.W.)
| | - Quan Jin
- Key Laboratory of Automobile Materials (Ministry of Education), School of Materials Science and Engineering, Jilin University, Changchun 130022, China;
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3
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Kumar A, Gutal AP, Sharma N, Kumar D, Zhang G, Kim H, Kumar P, Paranjothy M, Kumar M, Strano MS. Investigations of Vacancy-Assisted Selective Detection of NO 2 Molecules in Vertically Aligned SnS 2. ACS Sens 2023; 8:1357-1367. [PMID: 36921259 DOI: 10.1021/acssensors.3c00133] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
Two important methods for enhancing gas sensing performance are vacancy/defect and interlayer engineering. Tin sulfide (SnS2) has recently attracted much attention for sensing of the NO2 gas due to its active surface sites and tunable electronic structure. Herein, SnS2 has been synthesized by the chemical vapor deposition (CVD) method followed by nitrogen plasma treatment with different exposure times for fast detection of NO2 molecules. Plasma treatment created a substantial number of surface vacancies on SnS2 flakes, which were controlled by the exposure period to modify the surface of flakes. After 12 min of nitrogen plasma treatment, SnS2 nanoflakes show considerable improvement in NO2 sensing characteristics, including a high sensing response of ∼264% toward 100 ppm NO2 at 120°C. The enhancement in the relative response of the sensor is due to the electronic interaction between NO2 molecules and the S vacancies on the surface of SnS2. Density functional theory (DFT) computations indicate that the S-vacancy defects on the surface dominate the effective NO2 detection and the NO2 adsorption mechanism transition from physisorption to chemisorption. Adsorption kinetics of the NO2 gas over SnS2 nanoflake-based chemiresistor sensors were studied using the Lee and Strano model [ Langmuir 2005, 21(11), 5192-5196]. The irreversible rate of the reaction for various NO2 concentrations exposed to the gas sensor is extracted using this model, which also appropriately describes the response curves. The forward rate constant of the irreversible gas sensor increased with the increase of the N2 plasma treatment time and reached the maximum in the 12 min plasma-treated sample. Through defect engineering, this research may open up new vistas for the design and synthesis of 2D materials with enhanced sensing properties.
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Affiliation(s)
- Ashok Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342030, India
| | - Akash Popat Gutal
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342030, India
| | - Neelu Sharma
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342030, India
| | - Deepu Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi 175005, India
| | - Ge Zhang
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hyunah Kim
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Pradeep Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi 175005, India
| | - Manikandan Paranjothy
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342030, India
| | - Mahesh Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342030, India
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Michael S Strano
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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4
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Diko CS, Abitonze M, Liu Y, Zhu Y, Yang Y. Synthesis and Applications of Dimensional SnS 2 and SnS 2/Carbon Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4497. [PMID: 36558350 PMCID: PMC9786647 DOI: 10.3390/nano12244497] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
Dimensional nanomaterials can offer enhanced application properties benefiting from their sizes and morphological orientations. Tin disulfide (SnS2) and carbon are typical sources of dimensional nanomaterials. SnS2 is a semiconductor with visible light adsorption properties and has shown high energy density and long cycle life in energy storage processes. The integration of SnS2 and carbon materials has shown enhanced visible light absorption and electron transmission efficiency. This helps to alleviate the volume expansion of SnS2 which is a limitation during energy storage processes and provides a favorable bandgap in photocatalytic degradation. Several innovative approaches have been geared toward controlling the size, shape, and hybridization of SnS2/Carbon composite nanostructures. However, dimensional nanomaterials of SnS2 and SnS2/Carbon have rarely been discussed. This review summarizes the synthesis methods of zero-, one-, two-, and three-dimensional SnS2 and SnS2/Carbon composite nanomaterials through wet and solid-state synthesis strategies. Moreover, the unique properties that promote their advances in photocatalysis and energy conversion and storage are discussed. Finally, some remarks and perspectives on the challenges and opportunities for exploring advanced SnS2/Carbon nanomaterials are presented.
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Affiliation(s)
| | - Maurice Abitonze
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China
| | - Yining Liu
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China
| | - Yimin Zhu
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China
| | - Yan Yang
- Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116045, China
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5
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Huang GQ, Jin YX, Luo SZ, Fu ZH, Wang GE, Xu G. Cascading Photoelectric Detecting and Chemiresistive Gas-Sensing Properties of Pb 5 S 2 I 6 Nanowire Mesh for Multi-Factor Accurate Fire Alarm. SMALL METHODS 2022; 6:e2200470. [PMID: 35732956 DOI: 10.1002/smtd.202200470] [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: 05/12/2022] [Revised: 06/09/2022] [Indexed: 06/15/2023]
Abstract
Accurate fire warning is very important for people's life and property safety. The most commonly used fire alarm is based on the detection of a single factor of gases, smoke particles, or temperature, which easily causes false alarm due to complex environmental conditions. A facile multi-factor route for fabricating an accurate analog fire alarm using a Pb5 S2 I6 nanowire mesh based on its photoelectric and gas-sensing dual function is presented. The Pb5 S2 I6 nanowire mesh presents excellent photoelectric detection capabilities and is sensitive to ppm-level NO2 at room temperature. Under the "two-step verification" circuit of light and gas factors, the bimodal simulation fire alarm based on this Pb5 S2 I6 nanowire mesh can resist the interference of complex environmental factors and effectively reduce the false alarm rate.
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Affiliation(s)
- Gui-Qian Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
| | - Ying-Xue Jin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
- University of Chinese Academy of Sciences (UCAS), Beijing, 100049, China
| | - Shao-Zhen Luo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian, 350007, China
| | - Zhi-Hua Fu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
| | - Guan-E Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
| | - Gang Xu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
- Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian, 350108, China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, China
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6
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Oluwasanya PW, Carey T, Samad YA, Occhipinti LG. Unencapsulated and washable two-dimensional material electronic-textile for NO 2 sensing in ambient air. Sci Rep 2022; 12:12288. [PMID: 35853965 PMCID: PMC9296651 DOI: 10.1038/s41598-022-16617-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 07/12/2022] [Indexed: 11/17/2022] Open
Abstract
Materials adopted in electronic gas sensors, such as chemiresistive-based NO2 sensors, for integration in clothing fail to survive standard wash cycles due to the combined effect of aggressive chemicals in washing liquids and mechanical abrasion. Device failure can be mitigated by using encapsulation materials, which, however, reduces the sensor performance in terms of sensitivity, selectivity, and therefore utility. A highly sensitive NO2 electronic textile (e-textile) sensor was fabricated on Nylon fabric, which is resistant to standard washing cycles, by coating Graphene Oxide (GO), and GO/Molybdenum disulfide (GO/MoS2) and carrying out in situ reduction of the GO to Reduced Graphene Oxide (RGO). The GO/MoS2 e-textile was selective to NO2 and showed sensitivity to 20 ppb NO2 in dry air (0.05%/ppb) and 100 ppb NO2 in humid air (60% RH) with a limit of detection (LOD) of ~ 7.3 ppb. The selectivity and low LOD is achieved with the sensor operating at ambient temperatures (~ 20 °C). The sensor maintained its functionality after undergoing 100 cycles of standardised washing with no encapsulation. The relationship between temperature, humidity and sensor response was investigated. The e-textile sensor was embedded with a microcontroller system, enabling wireless transmission of the measurement data to a mobile phone. These results show the potential for integrating air quality sensors on washable clothing for high spatial resolution (< 25 cm2)—on-body personal exposure monitoring.
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Affiliation(s)
- Pelumi W Oluwasanya
- Cambridge Graphene Centre, Department of Engineering, University of Cambridge, Cambridge, UK
| | - Tian Carey
- Cambridge Graphene Centre, Department of Engineering, University of Cambridge, Cambridge, UK. .,CRANN and AMBER Research Centres, Trinity College Dublin, Dublin, Ireland.
| | - Yarjan Abdul Samad
- Cambridge Graphene Centre, Department of Engineering, University of Cambridge, Cambridge, UK.
| | - Luigi G Occhipinti
- Cambridge Graphene Centre, Department of Engineering, University of Cambridge, Cambridge, UK.
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7
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Hayashi K, Kataoka M, Sato S. Epitaxial Growth of SnS 2 Ribbons on a Au-Sn Alloy Seed Film Surface. J Phys Chem Lett 2022; 13:6147-6152. [PMID: 35762750 DOI: 10.1021/acs.jpclett.2c00906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two-dimensional metal chalcogenide film has attracted considerable interest for its use as an emerging device material for nanoelectronics. The film has been synthesized by various methods such as chemical vapor deposition, molecular beam epitaxy, and thermal vapor sulfurization. In this study, we took a new approach to synthesize tin disulfide (SnS2) by using Au-Sn alloy film as a metal seed deposited on a sapphire substrate. Multilayer SnS2 films were formed in a ribbon shape on (111)-oriented Au film and were aligned in the directions of threefold rotational symmetry. Furthermore, the SnS2 was found to have an epitaxial relationship relative to the Au film and the sapphire substrate as follows: SnS2[2̅110] || Au[101̅] || Al2O3[011̅0]. The segregation of grains consisting of a Sn-rich phase on the Au film surface and the subsequent sulfurization of these grains can be the key to the epitaxial SnS2 ribbon formation.
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Affiliation(s)
- Kenjiro Hayashi
- Fujitsu Limited, 4-1-1 kamikodanaka, Nakahara-ku, Kawasaki, Kanagawa 211-8588, Japan
| | - Masako Kataoka
- Fujitsu Limited, 4-1-1 kamikodanaka, Nakahara-ku, Kawasaki, Kanagawa 211-8588, Japan
| | - Shintaro Sato
- Fujitsu Limited, 4-1-1 kamikodanaka, Nakahara-ku, Kawasaki, Kanagawa 211-8588, Japan
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8
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Wang JZ, Zhou ZS, Dai YJ, Zhou JP, Lv XG. Charge transfer in SnS 2/Na 0.9Mg 0.45Ti 3.55O 8 heterojunction in photocatalytic process. NANOTECHNOLOGY 2021; 32:025712. [PMID: 33073773 DOI: 10.1088/1361-6528/abba9a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
SnS2/Na0.9Mg0.45Ti3.55O8 (SNMTO) composite photocatalyst was synthesized by a hydrothermal method. The chemical combination in lattice scale between SnS2 and Na0.9Mg0.45Ti3.55O8 (NMTO) was observed by high-resolution transmission electron microscopy, indicating that heterojunctions were obtained between SnS2 and NMTO. The photocatalytic activity of SNMTO heterojunctions was improved in comparison with that of pure NMTO and SnS2 for the photocatalytic degradation of methylene blue and Rhodamine B. Electrons were excited in n-type semiconductors NMTO and SnS2 under light illumination, and a part of them moved to the interface, determined with the surface potential reduction observed directly by Kelvin probe force microscopy. The charge redistribution in the composite illustrates a high density of interface states between SnS2 and NMTO, which attract lots of photoelectrons, as a result enhancing the photocatalytic performance. This finding is very different from the speculation that the photogenerated electrons and holes migrate from one part to another because it is difficult for charge carriers to travel through the interface with high energy.
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Affiliation(s)
- Jing-Zhou Wang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, People's Republic of China
- Department of Physics and Electronic Engineering, Yuncheng University, Yuncheng 044000, People's Republic of China
- Ordos Institute of Technology, Ordos 017000, People's Republic of China
| | - Zhong-Shu Zhou
- Department of Computer Science and Technology, Tangshan University, Tangshan 063000, People's Republic of China
| | - Yong-Jie Dai
- Department of Physics and Electronic Engineering, Yuncheng University, Yuncheng 044000, People's Republic of China
| | - Jian-Ping Zhou
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Xiao-Gong Lv
- Ordos Institute of Technology, Ordos 017000, People's Republic of China
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9
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Agrawal AV, Kumar N, Kumar M. Strategy and Future Prospects to Develop Room-Temperature-Recoverable NO 2 Gas Sensor Based on Two-Dimensional Molybdenum Disulfide. NANO-MICRO LETTERS 2021; 13:38. [PMID: 33425474 PMCID: PMC7780921 DOI: 10.1007/s40820-020-00558-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/29/2020] [Indexed: 05/12/2023]
Abstract
Nitrogen dioxide (NO2), a hazardous gas with acidic nature, is continuously being liberated in the atmosphere due to human activity. The NO2 sensors based on traditional materials have limitations of high-temperature requirements, slow recovery, and performance degradation under harsh environmental conditions. These limitations of traditional materials are forcing the scientific community to discover future alternative NO2 sensitive materials. Molybdenum disulfide (MoS2) has emerged as a potential candidate for developing next-generation NO2 gas sensors. MoS2 has a large surface area for NO2 molecules adsorption with controllable morphologies, facile integration with other materials and compatibility with internet of things (IoT) devices. The aim of this review is to provide a detailed overview of the fabrication of MoS2 chemiresistance sensors in terms of devices (resistor and transistor), layer thickness, morphology control, defect tailoring, heterostructure, metal nanoparticle doping, and through light illumination. Moreover, the experimental and theoretical aspects used in designing MoS2-based NO2 sensors are also discussed extensively. Finally, the review concludes the challenges and future perspectives to further enhance the gas-sensing performance of MoS2. Understanding and addressing these issues are expected to yield the development of highly reliable and industry standard chemiresistance NO2 gas sensors for environmental monitoring.
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Affiliation(s)
- Abhay V. Agrawal
- Functional and Renewable Energy Materials Laboratory, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
| | - Naveen Kumar
- Functional and Renewable Energy Materials Laboratory, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
| | - Mukesh Kumar
- Functional and Renewable Energy Materials Laboratory, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
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10
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Liu L, Ikram M, Ma L, Zhang X, Lv H, Ullah M, Khan M, Yu H, Shi K. Edge-exposed MoS 2 nanospheres assembled with SnS 2 nanosheet to boost NO 2 gas sensing at room temperature. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122325. [PMID: 32126422 DOI: 10.1016/j.jhazmat.2020.122325] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/01/2020] [Accepted: 02/15/2020] [Indexed: 05/13/2023]
Abstract
SnS2 nanosheets (NSs) have become an ideal candidate for high performance gas sensors due to their unique sensing properties. However, the restacking and aggregation in the process of sensor manufacturing have great influence on the gas sensing performance. In this study, we synthesized a novel heterojunction of the flower-like porous SnS2 NSs with edge exposed MoS2 nanospheres via a facile hydrothermal method and sensitive response has achieved at room temperature (27℃). After functionalization, the SMS-Ⅱ showed excellent response (Ra/Rg = 25.9-100 ppm NO2), which is 22.3 times higher than that of the pristine SnS2 NSs. The sensor also has the characteristics of short response time of 2 s, excellent base line recovery (28.2 s), long-term stability and reliability within 16 weeks, good selectivity and low detection concentration of only 50 ppb. The p-n heterojunction formed between the edge-exposed spherical MoS2 and the 3D flower-like SnS2 NSs has a synergistic effect, providing a highly active sites for the adsorption of NO2 gas, which greatly enhance the sensitivity of the sensor. Simple fabrication and excellent gas sensing performance of the SnS2/MoS2 heterostructure nanomaterials (NMs) will highly effective for commercial gas sensing application.
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Affiliation(s)
- Lujia Liu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Muhammad Ikram
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Laifeng Ma
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Xueyi Zhang
- College of Food Science, Northeast Agricultural University, Harbin, 150030, PR China
| | - He Lv
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Mohib Ullah
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Mawaz Khan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Haitao Yu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China.
| | - Keying Shi
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China.
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11
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Yan W, Lv C, Zhang D, Chen Y, Zhang L, Ó Coileáin C, Wang Z, Jiang Z, Hung KM, Chang CR, Wu HC. Enhanced NO 2 Sensitivity in Schottky-Contacted n-Type SnS 2 Gas Sensors. ACS APPLIED MATERIALS & INTERFACES 2020; 12:26746-26754. [PMID: 32426961 DOI: 10.1021/acsami.0c07193] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Layered materials are highly attractive in gas sensor research due to their extraordinary electronic and physicochemical properties. The development of cheaper and faster room-temperature detectors with high sensitivities especially in the parts per billion level is the main challenge in this rapidly developing field. Here, we show that sensitivity to NO2 (S) can be greatly improved by at least two orders of magnitude using an n-type electrode metal. Unconventionally for such devices, the ln(S) follows the classic Langmuir isotherm model rather than S as is for a p-type electrode metal. Excellent device sensitivities, as high as 13,000% for 9 ppm and 97% for 1 ppb NO2, are achieved with Mn electrodes at room temperature, which can be further tuned and enhanced with the application of a bias. Long-term stability, fast recovery, and strong selectivity toward NO2 are also demonstrated. Such impressive features provide a real solution for designing a practical high-performance layered material-based gas sensor.
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Affiliation(s)
- Wenjie Yan
- School of Physics, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Chengzhai Lv
- School of Physics, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Duan Zhang
- Elementary Educational College, Beijing key Laboratory for Nano-Photonics and Nano-Structure, Capital Normal University, Beijing 100048, P. R. China
| | - Yanhui Chen
- Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100124, China
| | - Lei Zhang
- Foshan (Southern China) Institute for New Materials, Guangdong 528000, China
| | - Cormac Ó Coileáin
- CRANN and AMBER, School of Chemistry, Trinity College, Dublin Dublin 2, Ireland
| | - Zhi Wang
- School of Physics, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Zhaotan Jiang
- School of Physics, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Kuan-Ming Hung
- Department of Electronics Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, Taiwan, ROC
| | - Ching-Ray Chang
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
| | - Han-Chun Wu
- School of Physics, Beijing Institute of Technology, Beijing 100081, P. R. China
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12
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First-Principles Study for Gas Sensing of Defective SnSe2 Monolayers. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10051623] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We report the interaction between gas molecules (NO2 and NH3) and the SnSe2 monolayers with vacancy and dopants (O and N) for potential applications as gas sensors. Compared with the gas molecular adsorbed on pristine SnSe2 monolayer, the Se-vacancy SnSe2 monolayer obviously enhances sensitivity to NO2 adsorption. The O-doped SnSe2 monolayer shows similar sensitivity to the pristine SnSe2 monolayer when adsorbing NO2 molecule. However, only the N-doped SnSe2 monolayer represents a visible enhancement for NO2 and NH3 adsorption. This work reveals that the selectivity and sensitivity of SnSe2-based gas sensors could be improved by introducing the vacancy or dopants.
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Ma L, Zhang X, Wang J, Ikram M, Ullah M, Lv H, Wu H, Shi K. Controllable synthesis of an intercalated SnS 2/aEG structure for enhanced NO 2 gas sensing performance at room temperature. NEW J CHEM 2020. [DOI: 10.1039/d0nj01005g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An intercalated SnS2/aEG structure with abundant heterojunctions for enhanced NO2 gas sensing performance at room temperature.
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Affiliation(s)
- Laifeng Ma
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- School of Chemistry and Material Science
- Heilongjiang University
- Harbin
| | - Xueyi Zhang
- College of Food Science
- Northeast Agricultural University
- Harbin 150030
- P. R. China
| | - Jue Wang
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- School of Chemistry and Material Science
- Heilongjiang University
- Harbin
| | - Muhammad Ikram
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- School of Chemistry and Material Science
- Heilongjiang University
- Harbin
| | - Mohib Ullah
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- School of Chemistry and Material Science
- Heilongjiang University
- Harbin
| | - He Lv
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- School of Chemistry and Material Science
- Heilongjiang University
- Harbin
| | - Hongyuan Wu
- College of Chemistry and Chemical Engineering
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Keying Shi
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- School of Chemistry and Material Science
- Heilongjiang University
- Harbin
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