期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 43, 期 50, 页码 22705-22714出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.09.162
关键词
H-2; Sensor; CuO; Nanostructure; Gas response; XRD
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2018R1A2B6002316]
- National Leading Research Laboratory program through the National Research Foundation (NRF) of Korea - Ministry of Science, ICT & Future Planning [NRF-2016R1A2B2016665]
- National Research Foundation of Korea [2018R1A2B6002316] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Hydrogen gas sensing were investigated using nano-bitter gourd like structured CuO material synthesized via a chemical route. Morphology of CuO was revealed using FE-SEM and TEM image analysis. CuO phase confirmation and molecular structural fingerprint were verified by XRD and Raman analysis respectively. Elemental composition and atomic states of elements were investigated by EDS and XPS techniques respectively. A remarkable high gas response of 175% was recorded by CuO sensor towards 100 ppm hydrogen (H-2) at the operating temperature 200 degrees C with response time 150 s. The lowest detection of H-2 was observed at 2 ppm concentration with the gas response of 5%. The gas response was studied as functions of different operating temperatures and concentrations. Transient gas response and stability were also confirmed for CuO sensor. Hydrogen sensing mechanism of CuO sensor was elucidated. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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