Extraordinary H2S gas sensing performance of ZnO/rGO external and internal heterojunctions

Tran Khoa Dang,Nguyen Tang Son,Nguyen Thi Lanh,Phan Hong Phuoc,Nguyen Ngoc Viet,Le Viet Thong,Chu Manh Hung,Nguyen Van Duy,Nguyen Duc Hoa,Nguyen Van Hieu

Journal of Alloys and Compounds（2021）

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摘要

•Heterojunctions of rGO and ZnO nanofibers exhibited ultrasensitive H2S gas sensing.•The effects of external and internal junctions on H2S gas-sensing were studied.•The cross-response of the heterojunction sensors to other reducing gases were almost eliminated.•A novel sulfuration-desulfuration sensing mechanism is proposed.

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关键词

Graphene,Nanofiber,Graphene-ZnO hybrid,H2S sensor

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