1
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Sui N, Song Z, Xu X, Cao S, Xu Y, Zhou T, Zhang T. Effect of heterogenous dopant and high temperature pulse excitation on ozone sensing behavior of In 2O 3 nanostructures and an image recognition method coupled to ozone sensing array. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133379. [PMID: 38160555 DOI: 10.1016/j.jhazmat.2023.133379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/24/2023] [Accepted: 12/25/2023] [Indexed: 01/03/2024]
Abstract
Ground-level ozone (O3) is a primary air pollutant with potential adverse impacts on human health and ecosystems. Aiming to detect O3 concentration and develop efficient O3 sensing materials, sensing behavior of heterogenous cation (Fe3+, Sn4+ and Sb5+) doped In2O3 nanostructures was investigated. The incorporation of these cations modulated the electronic structure of semiconductor oxides, affecting the density of chemisorbed oxygen species and reactive sites. From O3 sensing results, Fe3+ doped In2O3 based sensors featuring saturated resistance curves in O3 gas, demonstrated fast sensing speed and qualified detection threshold (20 ppb). In contrast, Sn4+ and Sb5+ doped counterparts exhibited non-saturated sensing curves, resulting in slower response/recovery speed. As a proof-of-concept, these optimized sensors were integrated as the sensor array. Coupled to the image recognition technique, this sensor array could successfully discriminate O3 and NOx. That is, through the tailored combination of material modulation and sensor array, this study paves a novel approach for highly sensitive and selective O3 detection.
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Affiliation(s)
- Ning Sui
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Zijie Song
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Xiaoyi Xu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Shuang Cao
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Yifeng Xu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Tingting Zhou
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China.
| | - Tong Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China.
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2
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Zhang Y, Qin C, Zhu L, Wang Y, Cao J. Adsorption of NO 2, NO, NH 3, and CO on Noble Metal (Rh, Pd, Ag, Ir, Pt, Au)-Modified Hexagonal Boron Nitride Monolayers: A First-Principles Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1058-1071. [PMID: 38146207 DOI: 10.1021/acs.langmuir.3c03282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
To investigate the application of modified hexagonal boron nitride (h-BN) in the detection and monitoring of harmful gases (NO2, NO, NH3, and CO), first-principles calculations are applied to study the geometric structure and electronic behavior of the adsorption system. In this paper, the four adsorption sites, namely, B, N, bridge, and hollow sites, are considered to explore the stable adsorption structure of metals (M = Rh, Pd, Ag, Ir, Pt, and Au) on the BN surface. The calculation results demonstrate that the geometric structures of metal at the N-site are relatively stable. Subsequently, the different adsorption structures of NO2, NO, NH3, and CO on M-BN are researched. The electron transfer, charge difference density, and work function of the stable adsorption structure are calculated. The results show that NO2, NO, and CO have the strongest adsorption capacity in the Ir-BN system, with adsorption energies of -2.705, -5.064, and -3.757 eV, respectively. The Pt-BN system has an excellent adsorption performance (-2.251 eV) for NH3. Compared with the M-BN system, the work function of the adsorption system increases after adsorbing NO2, while it decreases after adsorbing NH3. This work shows that h-BN with metal modification is a potential material for online monitoring of harmful gases.
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Affiliation(s)
- Yan Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Cong Qin
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Linghao Zhu
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Yan Wang
- State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China
| | - Jianliang Cao
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
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3
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Pula P, Leniart AA, Krol J, Gorzkowski MT, Suster MC, Wrobel P, Lewera A, Majewski PW. Block Copolymer-Templated, Single-Step Synthesis of Transition Metal Oxide Nanostructures for Sensing Applications. ACS APPLIED MATERIALS & INTERFACES 2023; 15:57970-57980. [PMID: 37644616 PMCID: PMC10739603 DOI: 10.1021/acsami.3c10439] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023]
Abstract
The synthesis of transition metal oxide nanostructures, thanks to their high surface-to-volume ratio and the resulting large fraction of surface atoms with high catalytic activity, is of prime importance for the development of new sensors and catalytic materials. Here, we report an economical, time-efficient, and easily scalable method of fabricating nanowires composed of vanadium, chromium, manganese, iron, and cobalt oxides by employing simultaneous block copolymer (BCP) self-assembly and selective sequestration of metal-organic acetylacetonate complexes within one of the BCP blocks. We discuss the mechanism and the primary factors that are responsible for the sequestration and conformal replication of the BCP template by the inorganic material that is obtained after the polymer template is removed. X-ray photoelectron spectroscopy (XPS) and powder X-ray diffraction (PXRD) studies indicate that the metal oxidation state in the nanowires produced by plasma ashing the BCP template closely matches that of the precursor complex and that their structure is amorphous, thus requiring high-temperature annealing in order to sinter them into a crystalline form. Finally, we demonstrate how the developed nanowire array fabrication scheme can be used to rapidly pattern a multilayered iron oxide nanomesh, which we then used to construct a prototype volatile organic compound sensor.
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Affiliation(s)
- Przemyslaw Pula
- Department
of Chemistry, University of Warsaw, Warsaw 02093, Poland
- Biological
and Chemical Research Centre, University
of Warsaw, Warsaw 02089, Poland
| | | | - Julia Krol
- Department
of Chemistry, University of Warsaw, Warsaw 02093, Poland
| | - Maciej T. Gorzkowski
- Biological
and Chemical Research Centre, University
of Warsaw, Warsaw 02089, Poland
| | - Mihai C. Suster
- Department
of Physics, University of Warsaw, Warsaw 02093, Poland
| | - Piotr Wrobel
- Department
of Physics, University of Warsaw, Warsaw 02093, Poland
| | - Adam Lewera
- Department
of Chemistry, University of Warsaw, Warsaw 02093, Poland
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4
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Zhu X, Li Y, Cao P, Li P, Xing X, Yu Y, Guo R, Yang H. Recent Advances of Graphene Quantum Dots in Chemiresistive Gas Sensors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2880. [PMID: 37947725 PMCID: PMC10647816 DOI: 10.3390/nano13212880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/20/2023] [Accepted: 10/28/2023] [Indexed: 11/12/2023]
Abstract
Graphene quantum dots (GQDs), as 0D graphene nanomaterials, have aroused increasing interest in chemiresistive gas sensors owing to their remarkable physicochemical properties and tunable electronic structures. Research on GQDs has been booming over the past decades, and a number of excellent review articles have been provided on various other sensing principles of GQDs, such as fluorescence-based ion-sensing, bio-sensing, bio-imaging, and electrochemical, photoelectrochemical, and electrochemiluminescence sensing, and therapeutic, energy and catalysis applications. However, so far, there is no single review article on the application of GQDs in the field of chemiresistive gas sensing. This is our primary inspiration for writing this review, with a focus on the chemiresistive gas sensors reported using GQD-based composites. In this review, the various synthesized strategies of GQDs and its composites, gas sensing enhancement mechanisms, and the resulting sensing characteristics are presented. Finally, the current challenges and future prospects of GQDs in the abovementioned application filed have been discussed for the more rational design of advanced GQDs-based gas-sensing materials and innovative gas sensors with novel functionalities.
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Affiliation(s)
- Xiaofeng Zhu
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;
- Institute for Smart Ageing, Beijing Academy of Science and Technology, Beijing 100089, China; (Y.L.); (P.C.); (P.L.); (X.X.); (Y.Y.)
| | - Yongzhen Li
- Institute for Smart Ageing, Beijing Academy of Science and Technology, Beijing 100089, China; (Y.L.); (P.C.); (P.L.); (X.X.); (Y.Y.)
| | - Pei Cao
- Institute for Smart Ageing, Beijing Academy of Science and Technology, Beijing 100089, China; (Y.L.); (P.C.); (P.L.); (X.X.); (Y.Y.)
| | - Peng Li
- Institute for Smart Ageing, Beijing Academy of Science and Technology, Beijing 100089, China; (Y.L.); (P.C.); (P.L.); (X.X.); (Y.Y.)
| | - Xinzhu Xing
- Institute for Smart Ageing, Beijing Academy of Science and Technology, Beijing 100089, China; (Y.L.); (P.C.); (P.L.); (X.X.); (Y.Y.)
| | - Yue Yu
- Institute for Smart Ageing, Beijing Academy of Science and Technology, Beijing 100089, China; (Y.L.); (P.C.); (P.L.); (X.X.); (Y.Y.)
| | - Ruihua Guo
- Institute for Smart Ageing, Beijing Academy of Science and Technology, Beijing 100089, China; (Y.L.); (P.C.); (P.L.); (X.X.); (Y.Y.)
| | - Hui Yang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;
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5
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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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6
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Liu P, Guo X, Liang C, Du B, Tan Y, Zheng H, Min C, Guo Y, Yang X. Rapid Detection of Trace Nitro-Explosives under UV Irradiation by Electronic Nose with Neural Networks. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37469023 DOI: 10.1021/acsami.3c06498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
The development of an electronic nose (E-nose) for rapid explosive trace detection (ETD) has been extensively studied. However, the extremely low saturated vapor pressure of explosives becomes the major obstacle for E-nose to be applied in practical environments. In this work, we innovatively combine the decomposition characteristics of nitro explosives when exposed to ultraviolet light into gas sensors for detecting explosives, and an E-nose consisting of a SnO2/WO3 nanocomposite-based chemiresistive sensor array with an artificial neural network is utilized to identify trace nitro-explosives by detecting their photolysis gas products, rather than the explosive molecules themselves or their saturated vapor. The ultralow detection limits for nitro-explosives can be achieved, and the detection limits toward three representative nitro-explosives of trinitrotoluene, pentaerythritol tetranitrate, and cyclotetramethylene tetranitroamine are as low as 500, 100, and 50 ng, respectively. Moreover, by extracting the features of sensor responses within 15 s, a classification system based on convolutional neural network (CNN) and long short-term memory network (LSTM) is introduced to realize fast and accurate classification. The 5-fold cross-validation results demonstrate that the CNN-LSTM model exhibits the highest classification accuracy of 97.7% compared with those of common classification models. This work realizes the detection of explosives photolysis gases using sensor technology, which provides a unique insight for the classification of trace explosives.
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Affiliation(s)
- Peilin Liu
- Institute of Chemical materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Xuezheng Guo
- Institute of Chemical materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
| | - Chengyao Liang
- Institute of Chemical materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
| | - Bingsheng Du
- Institute of Chemical materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
| | - Yiling Tan
- Institute of Chemical materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
| | - Hao Zheng
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Chengzong Min
- Institute of Chemical materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
| | - Yuanjun Guo
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Xi Yang
- Institute of Chemical materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
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7
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Tang T, Li Z, Cheng YF, Xie HG, Wang XX, Chen YL, Cheng L, Liang Y, Hu XY, Hung CM, Hoa ND, Yu H, Zhang BY, Xu K, Ou JZ. In-situ mechanochemically tailorable 2D gallium oxyselenide for enhanced optoelectronic NO 2 gas sensing at room temperature. JOURNAL OF HAZARDOUS MATERIALS 2023; 451:131184. [PMID: 36933506 DOI: 10.1016/j.jhazmat.2023.131184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/24/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
The adverse effects of NO2 on the environment and human health promote the development of high-performance gas sensors to address the need for monitoring. Two-dimensional (2D) metal chalcogenides have been considered an emerging group of NO2-sensitive materials, while incomplete recovery and low long-term stability are the two major hurdles for their practical implementation. The transformation into oxychalcogenides is an effective strategy to alleviate these drawbacks, but usually requires multiple-step synthesis and lacks controllability. Here, we prepare tailorable 2D p-type gallium oxyselenide with the thicknesses of 3-4 nm, through a single-step mechanochemical synthesis that combines the in-situ exfoliation and oxidation of bulk crystals. The optoelectronic NO2 sensing performances of such 2D gallium oxyselenide with different oxygen contents are investigated at room temperature, in which 2D GaSe0.58O0.42 exhibits the largest response magnitude of 82.2% towards 10 ppm NO2 at the irradiation of UV, with full reversibility, excellent selectivity, and long term stability for at least one month. Such overall performances are significantly improved over those of reported oxygen-incorporated metal chalcogenide-based NO2 sensors. This work provides a feasible approach to prepare 2D metal oxychalcogenides in a single-step manner and demonstrates their great potential for room-temperature fully reversible gas sensing.
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Affiliation(s)
- Tao Tang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Zhong Li
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing Institute of Technology, Nanjing 211167, China.
| | - Yin Fen Cheng
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Hua Guang Xie
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Xuan Xing Wang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yong Li Chen
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Liang Cheng
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yi Liang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Xin Yi Hu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Chu Manh Hung
- International Training Institute for Materials Science, Hanoi University of Science and Technology, Hanoi 10000, Viet Nam
| | - Nguyen Duc Hoa
- International Training Institute for Materials Science, Hanoi University of Science and Technology, Hanoi 10000, Viet Nam
| | - Hao Yu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Bao Yue Zhang
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Kai Xu
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Jian Zhen Ou
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia.
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8
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Kumar R, Kumari R, Singh VN. SnO 2-Based NO 2 Gas Sensor with Outstanding Sensing Performance at Room Temperature. MICROMACHINES 2023; 14:728. [PMID: 37420962 DOI: 10.3390/mi14040728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/17/2023] [Accepted: 03/23/2023] [Indexed: 07/09/2023]
Abstract
The controlled and efficient formation of oxygen vacancies on the surface of metal oxide semiconductors is required for their use in gas sensors. This work addresses the gas-sensing behaviour of tin oxide (SnO2) nanoparticles for nitrogen oxide (NO2), NH3, CO, and H2S detection at various temperatures. Synthesis of SnO2 powder and deposition of SnO2 film is conducted using sol-gel and spin-coating methods, respectively, as these methods are cost-effective and easy to handle. The structural, morphological, and optoelectrical properties of nanocrystalline SnO2 films were studied using XRD, SEM, and UV-visible characterizations. The gas sensitivity of the film was tested by a two-probe resistivity measurement device, showing a better response for the NO2 and outstanding low-concentration detection capacity (down to 0.5 ppm). The anomalous relationship between specific surface area and gas-sensing performance indicates the SnO2 surface's higher oxygen vacancies. The sensor depicts a high sensitivity at 2 ppm for NO2 with response and recovery times of 184 s and 432 s, respectively, at room temperature. The result demonstrates that oxygen vacancies can significantly improve the gas-sensing capability of metal oxide semiconductors.
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Affiliation(s)
- Rahul Kumar
- CSIR-National Physical Laboratory, Dr. KS Krishnan Marg, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Raman Kumari
- CSIR-National Physical Laboratory, Dr. KS Krishnan Marg, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vidya Nand Singh
- CSIR-National Physical Laboratory, Dr. KS Krishnan Marg, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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9
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Simonenko EP, Nagornov IA, Mokrushin AS, Averin AA, Gorban YM, Simonenko TL, Simonenko NP, Kuznetsov NT. Gas-Sensitive Properties of ZnO/Ti 2CT x Nanocomposites. MICROMACHINES 2023; 14:725. [PMID: 37420958 DOI: 10.3390/mi14040725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/17/2023] [Accepted: 03/22/2023] [Indexed: 07/09/2023]
Abstract
At present, a new class of 2D nanomaterials, MXenes, is of great scientific and applied interest, and their application prospects are very broad, including as effective doping components for receptor materials of MOS sensors. In this work we have studied the influence on the gas-sensitive properties of nanocrystalline zinc oxide synthesized by atmospheric pressure solvothermal synthesis, with the addition of 1-5% of multilayer two-dimensional titanium carbide Ti2CTx, obtained by etching Ti2AlC with NaF solution in hydrochloric acid. It was found that all the obtained materials have high sensitivity and selectivity with respect to 4-20 ppm NO2 at a detection temperature of 200 °C. It is shown that the selectivity towards this compound is best for the sample containing the highest amount of Ti2CTx dopant. It has been found that as the MXene content increases, there is an increase in nitrogen dioxide (4 ppm) from 1.6 (ZnO) to 20.5 (ZnO-5 mol% Ti2CTx). reactions which the responses to nitrogen dioxide increase. This may be due to the increase in the specific surface area of the receptor layers, the presence of MXene surface functional groups, as well as the formation of the Schottky barrier at the interface between the phases of the components.
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Affiliation(s)
- Elizaveta P Simonenko
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Ilya A Nagornov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Artem S Mokrushin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Aleksey A Averin
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 199071, Russia
| | - Yulia M Gorban
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
- Mendeleev University of Chemical Technology of Russia, Moscow 125047, Russia
| | - Tatiana L Simonenko
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Nikolay P Simonenko
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Nikolay T Kuznetsov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
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10
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Liu P, Wang J, Jin H, Ge M, Zhang F, Wang C, Sun Y, Dai N. SnO 2 mesoporous nanoparticle-based gas sensor for highly sensitive and low concentration formaldehyde detection. RSC Adv 2023; 13:2256-2264. [PMID: 36741165 PMCID: PMC9837703 DOI: 10.1039/d2ra06745e] [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: 10/25/2022] [Accepted: 01/01/2023] [Indexed: 01/15/2023] Open
Abstract
Indoor air quality detection, especially formaldehyde (HCHO) detection, is of great importance in practical application. A key limitation of promoting gas-sensing devices is the lack of sensing materials with high sensing sensitivity and selectivity. In this study, SnO2 mesoporous nanoparticles are fabricated by a facile hydrothermal route with a subsequent acid etching process. The prepared samples show high response toward HCHO (133.5, 222.8 for 100 ppm and 200 ppm HCHO, respectively) and short response/recovery time (15/22 s at 10 ppm). The excellent HCHO sensing performance benefits from the comprehensive regulation of the depletion region width, surface area and rich porosity, which is effective for the promotion of surface adsorption and catalyst activity. It is expected that the excellent sensing properties are promising for practical HCHO gas detection.
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Affiliation(s)
- Pengfei Liu
- School of Material Science and Engineering, Shanghai Jiao Tong UniversityNo. 800 Dongchuan RoadShanghai 200240PR China
| | - Jianbin Wang
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesNo. 500 Yutian RoadShanghai 200083PR China,Institute of Biomedical Optics and Optometry, Key Laboratory of Medical Optical Technology and Instruments, Ministry of Education, University of Shanghai for Science and TechnologyShanghai 200093China
| | - Han Jin
- Institute of Micro-Nano Science and Technology, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong UniversityNo. 800 Dongchuan RoadShanghai 200240P. R. China
| | - Meiying Ge
- National Engineering Research Center for Nanotechnology28 East Jiang Chuan RdShanghai 200241China
| | - Fang Zhang
- National Engineering Research Center for Nanotechnology28 East Jiang Chuan RdShanghai 200241China
| | - Cheng Wang
- Institute of Biomedical Optics and Optometry, Key Laboratory of Medical Optical Technology and Instruments, Ministry of Education, University of Shanghai for Science and TechnologyShanghai 200093China
| | - Yan Sun
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesNo. 500 Yutian RoadShanghai 200083PR China,Research Center for Sensing Materials and Devices Zhejiang LabHangzhouZhejiang311121China
| | - Ning Dai
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesNo. 500 Yutian RoadShanghai 200083PR China
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11
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Wu C, Zhang Y, Yang L, Xiao B, Jiao A, Li K, Chen T, Huang Z, Lin H. Flame Spray Pyrolysis Synthesis of WO 3 Sensing Materials: Effects of Flame Parameters on Particle Size Distribution and NO 2 Sensing Performance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15506-15515. [PMID: 36480753 DOI: 10.1021/acs.langmuir.2c01945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In this study, the flame spray pyrolysis (FSP) technique was employed to produce WO3 nanoparticles, which were subsequently used as sensing materials for NO2 sensors. To enhance the sensing performance, the effects of flame parameters on the particle properties and sensing performances for 150-1200 ppb NO2 at 125 °C were investigated. The results indicate that WO3 particles with an average crystal size of about 10-20 nm and a standard deviation of about 3-7.5 nm were generated by controlling the precursor and dispersion oxygen flow rate of FSP. Based on the evaluation of NO2 sensing performance, WO3 sensing materials synthesized under the 3/5 flame condition exhibited better sensitivity than sensors made under other flame conditions. In summary, the FSP method and the optimization of flame synthesis parameters could be an effective strategy to prepare the sensing materials with high sensing performance.
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Affiliation(s)
- Chunping Wu
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai200240, China
| | - Yiran Zhang
- College of Smart Energy, Shanghai Jiao Tong University, Shanghai200240, China
- Shanghai Non-Carbon Energy Conversion and Utilization Institute, Shanghai Jiao Tong University, Shanghai200240, China
| | - Lin Yang
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai200240, China
| | - Bang Xiao
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai200240, China
| | - Anqi Jiao
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai200240, China
| | - Ke Li
- Shanghai Marine Diesel Engine Research Institute, Shanghai200082, China
| | - Ting Chen
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai200240, China
| | - Zhen Huang
- College of Smart Energy, Shanghai Jiao Tong University, Shanghai200240, China
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai200240, China
| | - He Lin
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai200240, China
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12
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Fisenko NA, Solomatov IA, Simonenko NP, Mokrushin AS, Gorobtsov PY, Simonenko TL, Volkov IA, Simonenko EP, Kuznetsov NT. Atmospheric Pressure Solvothermal Synthesis of Nanoscale SnO 2 and Its Application in Microextrusion Printing of a Thick-Film Chemosensor Material for Effective Ethanol Detection. SENSORS (BASEL, SWITZERLAND) 2022; 22:9800. [PMID: 36560169 PMCID: PMC9784031 DOI: 10.3390/s22249800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
The atmospheric pressure solvothermal (APS) synthesis of nanocrystalline SnO2 (average size of coherent scattering regions (CSR)-7.5 ± 0.6 nm) using tin acetylacetonate as a precursor was studied. The resulting nanopowder was used as a functional ink component in microextrusion printing of a tin dioxide thick film on the surface of a Pt/Al2O3/Pt chip. Synchronous thermal analysis shows that the resulting semiproduct is transformed completely into tin dioxide nanopowder at 400 °C within 1 h. The SnO2 powder and the resulting film were shown to have a cassiterite-type structure according to X-ray diffraction analysis, and IR spectroscopy was used to establish the set of functional groups in the material composition. The microstructural features of the tin dioxide powder were analyzed using scanning (SEM) and transmission (TEM) electron microscopy: the average size of the oxide powder particles was 8.2 ± 0.7 nm. Various atomic force microscopy (AFM) techniques were employed to investigate the topography of the oxide film and to build maps of surface capacitance and potential distribution. The temperature dependence of the electrical conductivity of the printed SnO2 film was studied using impedance spectroscopy. The chemosensory properties of the formed material when detecting H2, CO, NH3, C6H6, C3H6O and C2H5OH, including at varying humidity, were also examined. It was demonstrated that the obtained SnO2 film has an increased sensitivity (the sensory response value was 1.4-63.5) and selectivity for detection of 4-100 ppm C2H5OH at an operating temperature of 200 °C.
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Affiliation(s)
- Nikita A. Fisenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow 119991, Russia
- Higher Chemical College of the Russian Academy of Sciences, D. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya sq., Moscow 125047, Russia
| | - Ivan A. Solomatov
- Basic Department of Inorganic Chemistry and Materials Science, National Research University “Higher School of Economics”, 20 Myasnsitskaya str., Moscow 101978, Russia
| | - Nikolay P. Simonenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow 119991, Russia
| | - Artem S. Mokrushin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow 119991, Russia
| | - Philipp Yu. Gorobtsov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow 119991, Russia
| | - Tatiana L. Simonenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow 119991, Russia
| | - Ivan A. Volkov
- Moscow Institute of Physics and Technology, National Research University, 9 Institutskiy per., Dolgoprudny 141701, Russia
| | - Elizaveta P. Simonenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow 119991, Russia
| | - Nikolay T. Kuznetsov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow 119991, Russia
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13
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Preparation of hollow bidirectional porous 3D peony-flower structure ZnCO3/ZnO with gas sensitive properties at room temperature. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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14
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Barandun G, Gonzalez-Macia L, Lee HS, Dincer C, Güder F. Challenges and Opportunities for Printed Electrical Gas Sensors. ACS Sens 2022; 7:2804-2822. [PMID: 36131601 PMCID: PMC9623589 DOI: 10.1021/acssensors.2c01086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 09/06/2022] [Indexed: 01/31/2023]
Abstract
Printed electrical gas sensors are a low-cost, lightweight, low-power, and potentially disposable alternative to gas sensors manufactured using conventional methods such as photolithography, etching, and chemical vapor deposition. The growing interest in Internet-of-Things, smart homes, wearable devices, and point-of-need sensors has been the main driver fueling the development of new classes of printed electrical gas sensors. In this Perspective, we provide an insight into the current research related to printed electrical gas sensors including materials, methods of fabrication, and applications in monitoring food quality, air quality, diagnosis of diseases, and detection of hazardous gases. We further describe the challenges and future opportunities for this emerging technology.
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Affiliation(s)
- Giandrin Barandun
- Imperial
College London, Department of Bioengineering,
Royal School of Mines, SW7
2AZ London, United Kingdom
- BlakBear,
Ltd, 7-8 Child’s
Place, SW5 9RX London, United Kingdom
| | - Laura Gonzalez-Macia
- Imperial
College London, Department of Bioengineering,
Royal School of Mines, SW7
2AZ London, United Kingdom
| | - Hong Seok Lee
- Imperial
College London, Department of Bioengineering,
Royal School of Mines, SW7
2AZ London, United Kingdom
| | - Can Dincer
- FIT
Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Freiburg 79110, Germany
- Department
of Microsystems Engineering (IMTEK), University
of Freiburg, Freiburg 79110, Germany
| | - Firat Güder
- Imperial
College London, Department of Bioengineering,
Royal School of Mines, SW7
2AZ London, United Kingdom
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15
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Mobtakeri S, Habashyani S, Gür E. Highly Responsive Pd-Decorated MoO 3 Nanowall H 2 Gas Sensors Obtained from In-Situ-Controlled Thermal Oxidation of Sputtered MoS 2 Films. ACS APPLIED MATERIALS & INTERFACES 2022; 14:25741-25752. [PMID: 35608898 PMCID: PMC9185678 DOI: 10.1021/acsami.2c04804] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
Among transition metal oxides, MoO3 is a promising material due to its layered structure and different oxidation states, making it suitable for different device applications. One of the methods used to grow MoO3 is radio frequency magnetron sputtering (RFMS), which is the most compatible method in industry. However, obtaining nanostructures by RFMS for metal oxides is challenging because of compact morphology film formation. In this study, α-MoO3 with vertical nanowalls is obtained by a two-step process; deposition of magnetron-sputtered MoS2 vertical nanowalls and postoxidation of these structures without changing the morphology. In situ transmittance and electrical measurements are performed to control the oxidation process, which shed light on understanding the oxidation of MoS2 nanowalls. The transition from MoS2 to α-MoO3 is investigated with partially oxidized MoS2/MoO3 samples with different thicknesses. It is also concluded that oxidation starts from nanowalls perpendicular to the substrate and lasts with oxidation of basal planes. Four different thicknesses of α-MoO3 nanowall samples are fabricated for H2 gas sensors. Also, the effect of Pd deposition on the H2-sensing properties of sensors is deeply investigated. An outstanding response of 3.3 × 105 as well as the response and recovery times of 379 and 304 s, respectively, are achieved from the thinnest Pd-loaded sample. Also, the gas-sensing mechanism is explored by gasochromic measurements to investigate the sensor behaviors under the conditions of dry air and N2 gas as the carrier gas.
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Affiliation(s)
- Soheil Mobtakeri
- Department
of Nanoscience and Nanoengineering, Graduate School of Natural and
Applied Science, Atatürk University, Erzurum 25240, Turkey
| | - Saman Habashyani
- Department
of Nanoscience and Nanoengineering, Graduate School of Natural and
Applied Science, Atatürk University, Erzurum 25240, Turkey
| | - Emre Gür
- Department
of Nanoscience and Nanoengineering, Graduate School of Natural and
Applied Science, Atatürk University, Erzurum 25240, Turkey
- Department
of Physics, Faculty of Science, Ataturk
University, Erzurum 25250, Turkey
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16
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Printing Technologies as an Emerging Approach in Gas Sensors: Survey of Literature. SENSORS 2022; 22:s22093473. [PMID: 35591162 PMCID: PMC9102873 DOI: 10.3390/s22093473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 02/04/2023]
Abstract
Herein, we review printing technologies which are commonly approbated at recent time in the course of fabricating gas sensors and multisensor arrays, mainly of chemiresistive type. The most important characteristics of the receptor materials, which need to be addressed in order to achieve a high efficiency of chemisensor devices, are considered. The printing technologies are comparatively analyzed with regard to, (i) the rheological properties of the employed inks representing both reagent solutions or organometallic precursors and disperse systems, (ii) the printing speed and resolution, and (iii) the thickness of the formed coatings to highlight benefits and drawbacks of the methods. Particular attention is given to protocols suitable for manufacturing single miniature devices with unique characteristics under a large-scale production of gas sensors where the receptor materials could be rather quickly tuned to modify their geometry and morphology. We address the most convenient approaches to the rapid printing single-crystal multisensor arrays at lab-on-chip paradigm with sufficiently high resolution, employing receptor layers with various chemical composition which could replace in nearest future the single-sensor units for advancing a selectivity.
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17
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Joshi N, Long H, Naik P, Kumar A, Mastelaro VR, Novais Oliveira, Jr. O, Zettl A, Lin L. Zinc stannate microcubes with integrated microheater for low-temperature NO2 detection. NEW J CHEM 2022. [DOI: 10.1039/d2nj02709g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports a facile technique to construct an oxide nanostructured film on a low-power microheater sensor platform to detect the NO2 gas with high sensitivity and selectivity at a...
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18
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Hou X, Song Y, Zhao Y, Li W, Guo Z, Tang S, Ma Y, Sun R, Wang Q, Li W. A Facile Route to Synthesis of Hierarchically Porous Carbon via Micelle System for Bifunctional Electrochemical Application. Front Chem 2021; 9:762103. [PMID: 34900933 PMCID: PMC8655679 DOI: 10.3389/fchem.2021.762103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 10/29/2021] [Indexed: 11/13/2022] Open
Abstract
Well-ordered hierarchically porous carbon (HPC) nanomaterials have been successfully synthesized by a facile, efficient, and fast heated-evaporation induced self-assembly (HISA) method. A micelle system was employed as the template by using the HISA method for the first time, which possessed great potential in the large-scale production of HPC materials. Various surfactants, including triblock copolymer Pluronic F127, P123, F108, and cationic CTAB, were used in the polymerization process as templates to reveal the relationship between the structure of surfactants and architecture of the as-prepared HPCs. Transmission electron microscopy (TEM), X-ray diffraction (XRD), Nitrogen adsorption, and Fourier transform infrared (FTIR) measurements were conducted to investigate the morphology, structure, and components of HPCs, which further confirmed the well-ordered and uniform mesoporous structure. The as-prepared HPC sample with F127 possessed the largest specific surface area, suitable pore size, and well-ordered mesoporous structure, resulting in better electrochemical performance as electrodes in the fields of energy storage and conversion system. Doped with the metallic oxide MnO2, the MnO2/HPC composites presented the outstanding electrochemical activity in supercapacitor with a high specific capacitance of 531.2 F g-1 at 1 A g-1 and excellent cycling performance with little capacity fading, even after 5,000 cycles. Moreover, the obtained sample could also be applied in the fields of oxygen reduction reaction (ORR) for its abundant active sites and regulate architecture. This versatile approach makes the mass industrial production of HPC materials possible in electrochemical applications through a facile and fast route.
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Affiliation(s)
- Xiaojian Hou
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yi Song
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yueju Zhao
- Beijing Duodian Futong Science and Technology Development CO., Ltd, Beijing, China
| | - Wenxiu Li
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Zanwu Guo
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Shaoru Tang
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yanan Ma
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Ruiwen Sun
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Qian Wang
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Wei Li
- Department of Chemistry, Capital Normal University, Beijing, China
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19
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Research and Progress of Transparent, Flexible Tin Oxide Ultraviolet Photodetector. CRYSTALS 2021. [DOI: 10.3390/cryst11121479] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Optical detection is of great significance in various fields such as industry, military, and medical treatment, especially ultraviolet (UV) photodetectors. Moreover, as the demand for wearable devices continues to increase, the UV photodetector, which is one of the most important sensors, has put forward higher requirements for bending resistance, durability, and transparency. Tin oxide (SnO2) has a wide band gap, high ultraviolet exciton gain, etc., and is considered to be an ideal material for preparing UV photodetectors. At present, SnO2-based UV photodetectors have a transparency of more than 70% in the visible light region and also have excellent flexibility of 160% tensile strain. Focusing on SnO2 nanostructures, the article mainly summarizes the progress of SnO2 UV photodetectors in flexibility and transparency in recent years and proposes feasible optimization directions and difficulties.
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20
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Adamu BI, Chen P, Chu W. Role of nanostructuring of sensing materials in performance of electrical gas sensors by combining with extra strategies. NANO EXPRESS 2021. [DOI: 10.1088/2632-959x/ac3636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Abstract
Historically, in gas sensing literature, the focus on “mechanisms” has been on oxygen species chemisorbed (ionosorbed) from the ambient atmosphere, but what these species actually represent and the location of the adsorption site on the surface of the solid are typically not well described. Recent advances in computational modelling and experimental surface science provide insights on the likely mechanism by which oxygen and other species interact with the surface of SnO2, providing insight into future directions for materials design and optimisation. This article reviews the proposed models of adsorption and reaction of oxygen on SnO2, including a summary of conventional evidence for oxygen ionosorption and recent operando spectroscopy studies of the atomistic interactions on the surface. The analysis is extended to include common target and interfering reducing gases, such as CO and H2, cross-interactions with H2O vapour, and NO2 as an example of an oxidising gas. We emphasise the importance of the surface oxygen vacancies as both the preferred adsorption site of many gases and in the self-doping mechanism of SnO2.
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22
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Reddeppa M, Nam DJ, Bak NH, Pasupuleti KS, Woo H, Kim SG, Oh JE, Kim MD. Proliferation of the Light and Gas Interaction with GaN Nanorods Grown on a V-Grooved Si(111) Substrate for UV Photodetector and NO 2 Gas Sensor Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:30146-30154. [PMID: 34143594 DOI: 10.1021/acsami.1c04469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Although excellent milestones of III-nitrides in optoelectronic devices have been achieved, the focus on the optimization of their geometrical structure for multiple applications is very rare. To address this issue, we exclusively designed a prototype device to enhance the photoconversion efficiency and gas interaction capabilities of GaN nanorods (NRs) grown on a V-grooved Si(100) substrate with Si(111) facets for photodetector and gas sensor applications. Photoluminescence studies have demonstrated an increased surface-to-volume ratio and light trapping for GaN NRs grown on V-grooved Si(111). GaN NRs on V-grooved Si(100) with Si(111) facets exhibited high photodetection performance in terms of photoresponsivity (217 mA/cm2), detectivity (3 × 1013 Jones), and external quantum efficiency (2.73 × 105%) compared to GaN NRs grown on plain Si(111). Owing to the robust interconnection between NRs and a high surface-to-volume ratio, the GaN NRs grown on V-grooved Si(100) with Si(111) facets probed for NO2 detection with the assistance of photonic energy. The photo-assisted sensing makes it possible to detect NO2 gas at the ppb level at room temperature, resulting in significant power reduction. The device showed high selectivity to NO2 against other target gases, such as NO, H2S, H2, NH3, and CO. The device showed excellent long-term stability at room temperature; the humidity effect on the device performance was also examined. The excellent device performance was due to the following: (i) benefited from the V-grooved Si structure, GaN NRs significantly trapped the incident light, which promoted high photocurrent conversion efficiency and (ii) GaN NRs grown on V-grooved Si(100) with Si(111) facets increased the surface-to-volume ratio and thus improved the gas interaction with a better diffusion ratio and high light trapping, which resulted in increased response/recovery times. These results represent an important forward step in prototype devices for multiple applications in materials research.
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Affiliation(s)
- Maddaka Reddeppa
- Institute of Quantum Systems, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Dong-Jin Nam
- Department of Physics, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Na-Hyun Bak
- Department of Physics, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | | | | | - Song-Gang Kim
- Department of Information and Communications, Joongbu University, 305 Donghen-ro, Goyang, Kyunggi-do 10279, Republic of Korea
| | - Jae-Eung Oh
- School of Electrical and Computer Engineering, Hangyang University, Ansan 15588, Republic of Korea
| | - Moon-Deock Kim
- Institute of Quantum Systems, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
- Department of Physics, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
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