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    • Au doped ZnO/SnO2 composite nanofibers for enhanced H2S gas sensing performance
    Authors: Chu, Manh Hung;  Advisor: Han, Viet Phuong; Vu, Van Thinh; Le, Thi Hong; Nguyen, Tat Thang; Nguyen, Hong Hanh; Nguyen, Quang Dich; Nguyen, Van Hieu; Nguyen, Van Duy; Nguyen, Duc Hoa;  Co-Author: - (2021)

    Nanofibers of ZnO-SnO2 nanocomposites doped with Au crystals were synthesized by an electrospinning method for enhancement of H2S gas sensing performance. The mixed solution of zinc acetate dihydrate and tin(II) chloride dihydrate, dissolved in ethanol/DMF solvent, was spun directly on the interdigital Pt electrodes for sensor fabrication. Thermal treatment was carried out to convert the spun nanofibers into ZnO-SnO2 nanocomposites doped with Au crystals. SEM and TEM observation confirmed the formation of porous nanofibers with an average diameter of about 120 nm. X-ray diffraction studies revealed that the nanocomposites of ZnO and SnO2 phases were formed, but not ZnSnO3, despite the...