Novel Z-Scheme TiO۲-ZnBi۲O۴/graphene heterojunction photocatalyst: Innovative synthesis using quince seed mucilage as natural surfactant
سال انتشار: 1400
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 198
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شناسه ملی سند علمی:
ICNNA02_113
تاریخ نمایه سازی: 4 مهر 1400
چکیده مقاله:
Developing interfacial connections is one of the breakthrough strategies to improve the photocatalytic activity of graphene/p-n heterojunction systems. Herein, natural quince seed mucilage, for the first time, was employed as cost-effective and ecofriendly surfactant to prepare novel TiO۲- ZnBi۲O۴/graphene hybrid photocatalyst. The highest photocatalytic efficiency toward methylene blue (MB) degradation under stimulated sunligth irradiation was obtained on TiO۲-ZnBi۲O۴/graphene-TM heterojunction, containing ۱۰ wt.% ZnBi۲O۴ and ۱ wt.% graphene. Quince seed mucilage provided excellent distribution of TiO۲-ZnBi۲O۴ nanoparticles on the highly stabilized graphene sheets, resulting in an improved interfacial intimate contacts, and thus enhanced photocatalytic degradation. Based on the trapping experiments, and photoelectrochemical Mott-Schottky calculations, the hybrid photocatalyst followedindirect Z-scheme charge transfer under simulated sunlight
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نویسندگان
Ghader Hosseinzadeh
Department of Chemical Engineering, University of Bonab, Bonab, Iran