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D-space-controlled graphene oxide hybrid membrane-loaded SnO2 nanosheets for selective H2 detection

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Abstract
The accurate detection of hydrogen gas molecules is considered to be important for industrial safety. However, the selective detection of the gas using semiconductive metal oxides (SMOs)-based sensors is challenging. Here, we describe the fabrication of H2 sensors in which a nanocellulose/graphene oxide (GO) hybrid membrane is attached to SnO2 nanosheets (NSs). One-dimensional (1D) nanocellulose fibrils are attached to the surface of GO NSs (GONC membrane) by mixing GO and anocellulose in a solution. The as-prepared GONC membrane is employed as a sacrificial template for SnO2 NSs as well as a molecular sieving membrane for selective H2 filtration. The combination of GONC membrane and SnO2 NSs showed substantial selectivity to hydrogen gas (Rair / Rgas > 10 @ 0.8% H2, 100o C) with noise level responses to interfering gases (H2S, CO, CH3COCH3, C2H5OH, and NO2). These remarkable sensing results are attributed mainly to the molecular sieving effect of the GONC membrane. These results can facilitate the development of a highly selective H2 detector using SMO sensors.
Author(s)
정지원장지수
Issued Date
2021
Type
Article
Keyword
Gas sensorsPorous SnO2Molecular sieving membranesGraphene oxide
DOI
10.46670/JSST.2021.30.6.376
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9004
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_nrf_kci_oai_kci_go_kr_ARTI_9892797&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,D-space-controlled%20graphene%20oxide%20hybrid%20membrane-loaded%20SnO2%20nanosheets%20for%20selective%20H2%20detection&offset=0&pcAvailability=true
Publisher
센서학회지
Location
대한민국
Language
한국어
ISSN
1225-5475
Citation Volume
30
Citation Number
6
Citation Start Page
376
Citation End Page
380
Appears in Collections:
Engineering > Material Engineering
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