Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 321, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2020.128529
Keywords
Zinc-oxide nanowires; CeO2; Reduced graphene oxides; Hexamethyldisiloxane; Highly stable hydrogen detection
Funding
- Technology Innovation Program - Ministry of Trade, Industry, and Energy (MI, Korea) [10054548]
- Ministry of Trade, Industry and Energy (MOTIE, Korea) [20005721]
- Ministry of Science and ICT [CN19100US001]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10054548, 20005721] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [CN19100US001, 4199990514093] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A stable hydrogen detection strategy based on the highly dispersive cerium oxide (CeO2) nanoparticles/porous reduced graphene oxides (rGO) coated onto ZnO nanowires in air/Hexamethyldisiloxane (HMDSO) environment at 250 degrees C is described. The response (R-a/R-g = 5.88) of palladium-decorated ZnO sensor is deteriorated by the decrease of hydroxyl groups and the increase of oxygen vacancies occurring at the surface by the HMDSO. The chemical processes are strongly influenced by the oxygen supply by the CeO2 and the SiO2 layer is also thinner by the rGO layer. These make the sensor less sensitive to HMDSO exposure, demonstrating excellent long-term stability.
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