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Mohammadzadeh MR, Hasani A, Hussain T, Ghanbari H, Fawzy M, Abnavi A, Ahmadi R, Kabir F, De Silva T, Rajapakse RKND, Adachi MM. Enhanced Sensitivity in Photovoltaic 2D MoS 2/Te Heterojunction VOC Sensors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402464. [PMID: 39058241 DOI: 10.1002/smll.202402464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 07/08/2024] [Indexed: 07/28/2024]
Abstract
Volatile organic compound (VOC) sensors have a broad range of applications including healthcare monitoring, product quality control, and air quality management. However, many such applications are demanding, requiring sensors with high sensitivity and selectivity. 2D materials are extensively used in many VOC sensing devices due to their large surface-to-volume ratio and fascinating electronic properties. These properties, along with their exceptional flexibility, low power consumption, room-temperature operation, chemical functionalization potential, and defect engineering capabilities, make 2D materials ideal for high-performance VOC sensing. Here, a 2D MoS2/Te heterojunction is reported that significantly improves the VOC detection compared to MoS2 and Te sensors on their own. Density functional theory (DFT) analysis shows that the MoS2/Te heterojunction significantly enhances the adsorption energy and therefore sensing sensitivity of the sensor. The sensor response, which denotes the percentage change in the sensor's conductance upon VOC exposure, is further enhanced under photo-illumination and zero-bias conditions to values up to ≈7000% when exposed to butanone. The MoS2/Te heterojunction is therefore a promising device architecture for portable and wearable sensing applications.
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Affiliation(s)
| | - Amirhossein Hasani
- School of Engineering Science, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
- Department of Physics and MonArk NSF Quantum Foundry, Montana State University, Bozeman, MT, 59717, USA
| | - Tanveer Hussain
- School of Science and Technology, University of New England, Armidale, New South Wales, 2351, Australia
| | - Hamidreza Ghanbari
- School of Engineering Science, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Mirette Fawzy
- Department of Physics, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Amin Abnavi
- School of Engineering Science, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Ribwar Ahmadi
- School of Engineering Science, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Fahmid Kabir
- School of Engineering Science, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Thushani De Silva
- School of Engineering Science, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - R K N D Rajapakse
- School of Engineering Science, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
- Faculty of Engineering, Sri Lanka Institute of Information Technology, New Kandy Road, Malabe, 10115, Sri Lanka
| | - Michael M Adachi
- School of Engineering Science, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
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Humayun M, Bououdina M, Usman M, Khan A, Luo W, Wang C. Designing State-of-the-Art Gas Sensors: From Fundamentals to Applications. CHEM REC 2024; 24:e202300350. [PMID: 38355899 DOI: 10.1002/tcr.202300350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 12/23/2023] [Indexed: 02/16/2024]
Abstract
Gas sensors are crucial in environmental monitoring, industrial safety, and medical diagnostics. Due to the rising demand for precise and reliable gas detection, there is a rising demand for cutting-edge gas sensors that possess exceptional sensitivity, selectivity, and stability. Due to their tunable electrical properties, high-density surface-active sites, and significant surface-to-volume ratio, nanomaterials have been extensively investigated in this regard. The traditional gas sensors utilize homogeneous material for sensing where the adsorbed surface oxygen species play a vital role in their sensing activity. However, their performance for selective gas sensing is still unsatisfactory because the employed high temperature leads to the poor stability. The heterostructures nanomaterials can easily tune sensing performance and their different energy band structures, work functions, charge carrier concentration and polarity, and interfacial band alignments can be precisely designed for high-performance selective gas sensing at low temperature. In this review article, we discuss in detail the fundamentals of semiconductor gas sensing along with their mechanisms. Further, we highlight the existed challenges in semiconductor gas sensing. In addition, we review the recent advancements in semiconductor gas sensor design for applications from different perspective. Finally, the conclusion and future perspectives for improvement of the gas sensing performance are discussed.
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Affiliation(s)
- Muhammad Humayun
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
- Energy, Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia
| | - Mohamed Bououdina
- Energy, Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia
| | - Muhammad Usman
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Abbas Khan
- Energy, Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia
- Department of Chemistry, Abdul Wali Khan University, Mardan, 23200, Pakistan
| | - Wei Luo
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Chundong Wang
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
- Energy, Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia
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Kumar YR, Thangamani JG, Karthik TVK, Deshmukh K, Pasha SKK. A novel flexible CO 2 gas sensor based on polyvinyl alcohol/yttrium oxide nanocomposite films. RSC Adv 2024; 14:5022-5036. [PMID: 38332782 PMCID: PMC10851186 DOI: 10.1039/d3ra04257j] [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: 06/25/2023] [Accepted: 01/22/2024] [Indexed: 02/10/2024] Open
Abstract
Polyvinyl alcohol/yttrium oxide (PVA/Y2O3) nanocomposite films with five different weight ratios of PVA and Y2O3 nanoparticles (NPs) were prepared using a simple solution casting method. The prepared polymer nanocomposite (PNC) films were examined using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). FTIR spectra exhibited a strong interaction between the PVA matrix and Y2O3 NPs. SEM results indicated that Y2O3 NPs were properly dispersed in the PVA matrix. The thermal stability of the PVA/Y2O3 nanocomposite films was found to be dependent on Y2O3 NP loading (wt%) in the nanocomposite films. Furthermore, chemiresistive gas sensing properties of the PVA/Y2O3 nanocomposite films were evaluated and the sensing parameters including sensing response, operating temperature, selectivity, stability, response/recovery time, and repeatability were systematically investigated based on the change in electrical resistance of the nanocomposite film in the presence of carbon dioxide (CO2) gas. The maximum sensing response (S) of 92.72% at a concentration of 100 ppm under an optimized operating temperature of 100 °C with a fast response/recovery time of ∼15/11 s towards CO2 gas detection was observed for the PVA/Y2O3 nanocomposite film with 5 wt% loading of Y2O3 NPs in the PVA matrix. The finding in this work suggest that Y2O3 NPs are sufficiently fast as a CO2 gas sensing material at a relatively low operating temperature. Moreover, the key role of the Y2O3 NPs in modulating the electrical and gas sensing properties of the PVA matrix is discussed here.
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Affiliation(s)
- Y Ravi Kumar
- Functional Nanomaterials and Polymer Nanocomposite Laboratory, Department of Physics, VIT-AP University Amaravati Guntur 522501 Andhra Pradesh India
- Department of Science and Humanities, MLR Institute of Technology Hyderabad Telangana India
| | - J Gounder Thangamani
- Department of Physics, School of Advanced Sciences, VIT University 632014 Vellore Tamil Nadu India
| | - T V Krishna Karthik
- Tecnologico de Monterrey, School of Engineering and Sciences, Department of Mechanics and Advanced Materials Avenida Lago de Guadalupe KM 3.5, Margarita Maza de Juárez 52926 Ciudad Lopez Mateos Mexico
| | - Kalim Deshmukh
- New Technologies - Research Center, University of West Bohemia Plzeň Czech Republic
| | - S K Khadheer Pasha
- Functional Nanomaterials and Polymer Nanocomposite Laboratory, Department of Physics, VIT-AP University Amaravati Guntur 522501 Andhra Pradesh India
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Zhang R, Wang Z, Hou Q, Yuan X, Yong Y, Cui H, Li X. First-principles insights into the C 6N 7 monolayer as a highly efficient sensor and scavenger for the detection of selective volatile organic compounds. RSC Adv 2023; 13:28703-28712. [PMID: 37790102 PMCID: PMC10542849 DOI: 10.1039/d3ra05573f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 09/24/2023] [Indexed: 10/05/2023] Open
Abstract
The design of new gas sensors and scavengers of volatile organic compounds (VOCs) is desirable for VOC enriching, separation and utilization. Herein, first-principles methods were performed to investigate the potential of C6N7 monolayers as highly efficient sensors and scavengers for selective VOCs (toluene, benzene, vinyl chloride, ethane, methanal, acetone, ethanol, and acetaldehyde). The physisorption of toluene, benzene, acetone, ethanol, acetaldehyde, and methanal has relatively high adsorption strength and can significantly tune the electronic properties and work function (Φ) of the C6N7, indicating that the C6N7 monolayer is highly sensitive and selective to these VOC gases. In addition, the desorption time of benzene, acetone, ethanol, acetaldehyde, and methanal is about 3, 0.4, 2.0 × 10-2, 3.0 × 10-2, and 3.6 × 10-5 s at 300 K, respectively, indicating that the C6N7-based sensor has high reusability at room temperature. The recovery time of toluene was about 7.8 × 102 s at 300 K, showing disposable toluene gas sensing of the monolayer. Our work confirms that the C6N7 monolayer as a resistance-type and Φ-type gas sensor and scavenger is highly sensitive, selective and reusable for VOCs (benzene, acetone, ethanol, acetaldehyde, and methanol), but is a disposable toluene gas sensor and scavenger at room temperature.
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Affiliation(s)
- Ruishan Zhang
- School of Physics and Engineering, Henan University of Science and Technology Luoyang 471023 China
| | - Zihao Wang
- School of Physics and Engineering, Henan University of Science and Technology Luoyang 471023 China
| | - Qihua Hou
- School of Physics and Engineering, Henan University of Science and Technology Luoyang 471023 China
| | - Xiaobo Yuan
- School of Physics and Engineering, Henan University of Science and Technology Luoyang 471023 China
| | - Yongliang Yong
- School of Physics and Engineering, Henan University of Science and Technology Luoyang 471023 China
- Advanced Materials Science Innovation Center, Longmen Laboratory Luoyang 471003 China
| | - Hongling Cui
- School of Physics and Engineering, Henan University of Science and Technology Luoyang 471023 China
| | - Xinli Li
- Advanced Materials Science Innovation Center, Longmen Laboratory Luoyang 471003 China
- School of Materials Science and Engineering, Henan University of Science and Technology Luoyang 471023 China
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Kumar N, Kumari M, Ismael M, Tahir M, Sharma RK, Kumari K, Koduru JR, Singh P. Graphitic carbon nitride (g-C 3N 4)-assisted materials for the detection and remediation of hazardous gases and VOCs. ENVIRONMENTAL RESEARCH 2023; 231:116149. [PMID: 37209982 DOI: 10.1016/j.envres.2023.116149] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/22/2023] [Accepted: 05/13/2023] [Indexed: 05/22/2023]
Abstract
Graphitic carbon nitride (g-C3N4)-based materials are attracting attention for their unique properties, such as low-cost, chemical stability, facile synthesis, adjustable electronic structure, and optical properties. These facilitate the use of g-C3N4 to design better photocatalytic and sensing materials. Environmental pollution by hazardous gases and volatile organic compounds (VOCs) can be monitored and controlled using eco-friendly g-C3N4- photocatalysts. Firstly, this review introduces the structure, optical and electronic properties of C3N4 and C3N4 assisted materials, followed by various synthesis strategies. In continuation, binary and ternary nanocomposites of C3N4 with metal oxides, sulfides, noble metals, and graphene are elaborated. g-C3N4/metal oxide composites exhibited better charge separation that leads to enhancement in photocatalytic properties. g-C3N4/noble metal composites possess higher photocatalytic activities due to the surface plasmon effects of metals. Ternary composites by the presence of dual heterojunctions improve properties of g-C3N4 for enhanced photocatalytic application. In the later part, we have summarised the application of g-C3N4 and its assisted materials for sensing toxic gases and VOCs and decontaminating NOx and VOCs by photocatalysis. Composites of g-C3N4 with metal and metal oxide give comparatively better results. This review is expected to bring a new sketch for developing g-C3N4-based photocatalysts and sensors with practical applications.
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Affiliation(s)
- Naveen Kumar
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India.
| | - Monika Kumari
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Mohammed Ismael
- Electrical energy storage system, Gottfried Wilhelm Leibniz Universität Hannover, Welfengarten 1, 30167, Hannover, Germany
| | - Muhammad Tahir
- Chemical and Petroleum Engineering Department, UAE University, P.O. Box 15551, Al Ain, United Arab Emirates
| | | | - Kavitha Kumari
- Baba Mastnath University, Asthal Bohar, Rohtak, 124001, India
| | - Janardhan Reddy Koduru
- Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, South Korea
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173212, India
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Wang X, Liang W, Lin C, Zhang T, Zhang J, Sheng N, Song Z, Jiang J, Sun B, Xu W. Enabling High Activity Catalyst Co 3O 4@CeO 2 for Propane Catalytic Oxidation via Inverse Loading. Molecules 2023; 28:5930. [PMID: 37570900 PMCID: PMC10421505 DOI: 10.3390/molecules28155930] [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: 05/30/2023] [Revised: 07/30/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
Propane catalytic oxidation is an important industrial chemical process. However, poor activity is frequently observed for stable C-H bonds, especially for non-noble catalysts in low temperature. Herein, we reported a controlled synthesis of catalyst Co3O4@CeO2-IE via inverse loading and proposed a strategy of oxygen vacancy for its high catalytic oxidation activity, achieving better performance than traditional supported catalyst Co3O4/CeO2-IM, i.e., the T50 (temperature at 50% propane conversion) of 217 °C vs. 235 °C and T90 (temperature at 90% propane conversion) of 268 °C vs. 348 °C at the propane space velocity of 60,000 mL g-1 h-1. Further investigations indicate that there are more enriched oxygen vacancies in Co3O4@CeO2-IE due to the unique preparation method. This work provides an element doping strategy to effectively boost the propane catalytic oxidation performance as well as a bright outlook for efficient environmental catalysts.
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Affiliation(s)
- Xuan Wang
- SINOPEC Research Institute of Safety Engineering Co., Ltd., 339th Songling Road, Qingdao 266071, China; (X.W.); (W.L.); (T.Z.); (J.Z.); (J.J.); (B.S.)
| | - Wei Liang
- SINOPEC Research Institute of Safety Engineering Co., Ltd., 339th Songling Road, Qingdao 266071, China; (X.W.); (W.L.); (T.Z.); (J.Z.); (J.J.); (B.S.)
| | - Changqing Lin
- School of Physical Science and Technology, Guangxi University, Nanning 530004, China;
| | - Tie Zhang
- SINOPEC Research Institute of Safety Engineering Co., Ltd., 339th Songling Road, Qingdao 266071, China; (X.W.); (W.L.); (T.Z.); (J.Z.); (J.J.); (B.S.)
| | - Jing Zhang
- SINOPEC Research Institute of Safety Engineering Co., Ltd., 339th Songling Road, Qingdao 266071, China; (X.W.); (W.L.); (T.Z.); (J.Z.); (J.J.); (B.S.)
| | - Nan Sheng
- SINOPEC Research Institute of Safety Engineering Co., Ltd., 339th Songling Road, Qingdao 266071, China; (X.W.); (W.L.); (T.Z.); (J.Z.); (J.J.); (B.S.)
| | - Zhaoning Song
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Jie Jiang
- SINOPEC Research Institute of Safety Engineering Co., Ltd., 339th Songling Road, Qingdao 266071, China; (X.W.); (W.L.); (T.Z.); (J.Z.); (J.J.); (B.S.)
| | - Bing Sun
- SINOPEC Research Institute of Safety Engineering Co., Ltd., 339th Songling Road, Qingdao 266071, China; (X.W.); (W.L.); (T.Z.); (J.Z.); (J.J.); (B.S.)
| | - Wei Xu
- SINOPEC Research Institute of Safety Engineering Co., Ltd., 339th Songling Road, Qingdao 266071, China; (X.W.); (W.L.); (T.Z.); (J.Z.); (J.J.); (B.S.)
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7
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Zhang Y, Zhao X, Qin Y, Li X, Chang Y, Shi Z, Song M, Sun W, Xiao J, Li Z, Qing G. Order-order assembly transition-driven polyamines detection based on iron-sulfur complexes. Commun Chem 2023; 6:146. [PMID: 37420027 PMCID: PMC10328931 DOI: 10.1038/s42004-023-00942-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/29/2023] [Indexed: 07/09/2023] Open
Abstract
Innovative modes of response can greatly push forward chemical sensing processes and subsequently improve sensing performance. Classical chemical sensing modes seldom involve the transition of a delicate molecular assembly during the response. Here, we display a sensing mode for polyamine detection based on an order-order transition of iron-sulfur complexes upon their assembly. Strong validation proves that the unique order-order transition of the assemblies is the driving force of the response, in which the polyamine captures the metal ion of the iron-sulfur complex, leading it to decompose into a metal-polyamine product, accompanied by an order-order transition of the assemblies. This mechanism makes the detection process more intuitive and selective, and remarkably improves the detection efficiency, achieving excellent polyamines specificity, second-level response, convenient visual detection, and good recyclability of the sensing system. Furthermore, this paper also provides opportunities for the further application of the iron-sulfur platform in environment-related fields.
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Affiliation(s)
- Yahui Zhang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Xiangyu Zhao
- Sixth Laboratory, Sinopec Dalian (Fushun) Research Institute of Petroleum and Petrochemicals, 96 Nankai Road, Dalian, 116045, P. R. China
| | - Yue Qin
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Xiaopei Li
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Yongxin Chang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Zhenqiang Shi
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Mengyuan Song
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Wenjing Sun
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Jie Xiao
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Zan Li
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Guangyan Qing
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.
- College of Chemistry and Chemical Engineering, Wuhan Textile University, 1 Sunshine Road, Wuhan, 430200, P. R. China.
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Saggu IS, Singh S, Chen K, Xuan Z, Swihart MT, Sharma S. Ultrasensitive Room-Temperature NO 2 Detection Using SnS 2/MWCNT Composites and Accelerated Recovery Kinetics by UV Activation. ACS Sens 2023; 8:243-253. [PMID: 36647806 DOI: 10.1021/acssensors.2c02104] [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: 01/18/2023]
Abstract
High performance with lower power consumption is one among the essential features of a sensing device. Minute traces of hazardous gases such as NO2 are difficult to detect. Tin disulfide (SnS2) nanosheets have emerged as a promising NO2 sensor. However, their poor room-temperature conductivity gives rise to inferior sensitivity and sluggish recovery rates, thereby hindering their applications. To mitigate this problem, we present a low-cost ultrasensitive NO2 gas sensor with tin disulfide/multiwalled carbon nanotube (SnS2/MWCNT) nanocomposites, prepared using a single-step hydrothermal method, as sensing elements. Relative to pure SnS2, the conductivity of nanocomposites improved significantly. The sensor displayed a decrease in resistance when exposed to NO2, an oxidizing gas, and exhibited p-type conduction, also confirmed in separate Mott-Schottky measurements. At a temperature of 20 °C, the sensor device has a relative response of about ≈5% (3%) for 25 ppb (1 ppb) of NO2 with complete recovery in air (10 min) and excellent recovery rates with UV activation (0.3 min). A theoretical lower limit of detection (LOD) of 7 ppt implies greater sensitivity than all previously reported SnS2-based gas sensors, to the best of our knowledge. The improved sensing characteristics were attributed to the formation of nano p-n heterojunctions, which enhances the charge transport and gives rise to faster response. The composite sensor also demonstrated good NO2 selectivity against a variety of oxidizing and reducing gases, as well as excellent stability and long-term durability. This work will provide a fresh perspective on SnS2-based composite materials for practical gas sensors.
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Affiliation(s)
- Imtej Singh Saggu
- Department of Physics, Guru Nanak Dev University, Amritsar, Punjab143005, India
| | - Sukhwinder Singh
- Department of Physics, Guru Nanak Dev University, Amritsar, Punjab143005, India
| | - Kaiwen Chen
- Department of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, New York14260, United States
| | - Zhengxi Xuan
- Department of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, New York14260, United States
| | - Mark T Swihart
- Department of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, New York14260, United States
| | - Sandeep Sharma
- Department of Physics, Guru Nanak Dev University, Amritsar, Punjab143005, India
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Pathak AK, Swargiary K, Kongsawang N, Jitpratak P, Ajchareeyasoontorn N, Udomkittivorakul J, Viphavakit C. Recent Advances in Sensing Materials Targeting Clinical Volatile Organic Compound (VOC) Biomarkers: A Review. BIOSENSORS 2023; 13:114. [PMID: 36671949 PMCID: PMC9855562 DOI: 10.3390/bios13010114] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/22/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
In general, volatile organic compounds (VOCs) have a high vapor pressure at room temperature (RT). It has been reported that all humans generate unique VOC profiles in their exhaled breath which can be utilized as biomarkers to diagnose disease conditions. The VOCs available in exhaled human breath are the products of metabolic activity in the body and, therefore, any changes in its control level can be utilized to diagnose specific diseases. More than 1000 VOCs have been identified in exhaled human breath along with the respiratory droplets which provide rich information on overall health conditions. This provides great potential as a biomarker for a disease that can be sampled non-invasively from exhaled breath with breath biopsy. However, it is still a great challenge to develop a quick responsive, highly selective, and sensitive VOC-sensing system. The VOC sensors are usually coated with various sensing materials to achieve target-specific detection and real-time monitoring of the VOC molecules in the exhaled breath. These VOC-sensing materials have been the subject of huge interest and extensive research has been done in developing various sensing tools based on electrochemical, chemoresistive, and optical methods. The target-sensitive material with excellent sensing performance and capturing of the VOC molecules can be achieved by optimizing the materials, methods, and its thickness. This review paper extensively provides a detailed literature survey on various non-biological VOC-sensing materials including metal oxides, polymers, composites, and other novel materials. Furthermore, this review provides the associated limitations of each material and a summary table comparing the performance of various sensing materials to give a better insight to the readers.
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Affiliation(s)
- Akhilesh Kumar Pathak
- International School of Engineering (ISE), Intelligent Control Automation of Process Systems Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kankan Swargiary
- International School of Engineering (ISE), Intelligent Control Automation of Process Systems Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nuntaporn Kongsawang
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Pannathorn Jitpratak
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Noppasin Ajchareeyasoontorn
- International School of Engineering (ISE), Intelligent Control Automation of Process Systems Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
| | - Jade Udomkittivorakul
- International School of Engineering (ISE), Intelligent Control Automation of Process Systems Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
| | - Charusluk Viphavakit
- International School of Engineering (ISE), Intelligent Control Automation of Process Systems Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
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Bahri M, Gebre SH, Elaguech MA, Dajan FT, Sendeku MG, Tlili C, Wang D. Recent advances in chemical vapour deposition techniques for graphene-based nanoarchitectures: From synthesis to contemporary applications. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214910] [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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11
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Maeda H, Takada K, Fukui N, Nagashima S, Nishihara H. Conductive coordination nanosheets: Sailing to electronics, energy storage, and catalysis. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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