Au@ZnO functionalized three–dimensional macroporous WO3: A application of selective H2S gas sensor for exhaled breath biomarker detection

•A three-dimensional inverse opal WO3 sensor modified by MOF derived ZnO@Au nanopartilces is synthesized for H2S detection.•The heterojunctions, and the effective encapsulated of small sized Au NPs lead to the outstanding gas sensing performance.•The improved conductivity and the higher negative cha...

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