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Nanometer-Thick ZnO...
Nanometer-Thick ZnO/SnO2Heterostructures Grown on Alumina for H2S Sensing
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- Akbari-Saatlu, Mehdi (författare)
- Mittuniversitetet,Institutionen för elektronikkonstruktion,Mid Sweden Univ, Dept Elect Design, SE-85170 Sundsvall, Sweden
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- Procek, Marcin, 1987- (författare)
- Mittuniversitetet,Institutionen för elektronikkonstruktion,Silesian University of Technology, Poland,Mid Sweden Univ, Dept Elect Design, SE-85170 Sundsvall, Sweden.;Silesian Tech Univ, Dept Optoelect, PL-44100 Gliwice, Poland
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- Mattsson, Claes, 1978- (författare)
- Mittuniversitetet,Institutionen för elektronikkonstruktion,Mid Sweden Univ, Dept Elect Design, SE-85170 Sundsvall, Sweden
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- Thungström, Göran, 1960- (författare)
- Mittuniversitetet,Institutionen för elektronikkonstruktion,Mid Sweden Univ, Dept Elect Design, SE-85170 Sundsvall, Sweden
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- Törndahl, Tobias, 1974- (författare)
- Uppsala universitet,Solcellsteknik
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- Li, B. (författare)
- Guangdong Greater Bay Area Inst Integrated Circui, Guangzhou 510535, Peoples R China
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- Su, J. (författare)
- Guangdong Greater Bay Area Inst Integrated Circui, Guangzhou 510535, Peoples R China.;Chinese Acad Sci, Inst Microelect, Key Lab Microelect Devices & Integrated Technol, Beijing 100029, Peoples R China
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- Xiong, W. (författare)
- Chinese Acad Sci, Inst Microelect, Key Lab Microelect Devices & Integrated Technol, Beijing 100029, Peoples R China
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- Radamson, Henry H. (författare)
- Mittuniversitetet,Institutionen för elektronikkonstruktion,Guangdong Greater Bay Area Institute of Integrated Circuit and System, Guangzhou, China; Chinese Academy of Sciences, Beijing, China,Mid Sweden Univ, Dept Elect Design, SE-85170 Sundsvall, Sweden.;Guangdong Greater Bay Area Inst Integrated Circui, Guangzhou 510535, Peoples R China.;Chinese Acad Sci, Inst Microelect, Key Lab Microelect Devices & Integrated Technol, Beijing 100029, Peoples R China
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(creator_code:org_t)
- 2022-05-05
- 2022
- Engelska.
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Ingår i: ACS Applied Nano Materials. - : American Chemical Society (ACS). - 2574-0970. ; 5:5, s. 6954-6963
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Designing heterostructure materials at the nanoscale is a well-known method to enhance gas sensing performance. In this study, a mixed solution of zinc chloride and tin (II) chloride dihydrate, dissolved in ethanol solvent, was used as the initial precursor for depositing the sensing layer on alumina substrates using the ultrasonic spray pyrolysis (USP) method. Several ZnO/SnO2 heterostructures were grown by applying different ratios in the initial precursors. These heterostructures were used as active materials for the sensing of H2S gas molecules. The results revealed that an increase in the zinc chloride in the USP precursor alters the H2S sensitivity of the sensor. The optimal working temperature was found to be 450 °C. The sensor, containing 5:1 (ZnCl2: SnCl2·2H2O) ratio in the USP precursor, demonstrates a higher response than the pure SnO2 (∼95 times) sample and other heterostructures. Later, the selectivity of the ZnO/SnO2 heterostructures toward 5 ppm NO2, 200 ppm methanol, and 100 ppm of CH4, acetone, and ethanol was also examined. The gas sensing mechanism of the ZnO/SnO2 was analyzed and the remarkably enhanced gas-sensing performance was mainly attributed to the heterostructure formation between ZnO and SnO2. The synthesized materials were also analyzed by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray, transmission electron microscopy, and X-ray photoelectron spectra to investigate the material distribution, grain size, and material quality of ZnO/SnO2 heterostructures.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- gas sensors
- H2S
- heterostructures
- ultrasonic spray pyrolysis
- ZnO/SnO2
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Akbari-Saatlu, M ...
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Procek, Marcin, ...
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Mattsson, Claes, ...
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Thungström, Göra ...
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Törndahl, Tobias ...
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Li, B.
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Su, J.
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Xiong, W.
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Radamson, Henry ...
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