A novel 2D graphene oxide modified α-AgVO3 nanorods:Design,fabrication,and enhanced visible-light photocatalytic performance

• 作者: Jian WU Liangyu LI Xing-ao LI Xin MIN Yan XING
• 来源期刊: 先进陶瓷（英文版）
• 年，卷（期）: 2022,（2）
• 所属期刊栏目: Research Article
• 页码范围: 308-320
• 页数: 13页
• 语种: 英文

摘要

Silver vanadates are promising visible-light-responded photocatalysts with suitable bandgap for solar absorption.However,the easy recombination of photogenerated carriers limits their performance.To overcome this obstacle,a novel 2D graphene oxide(GO)modified α-AgVO3 nanorods(GO/α-AgVO3)photocatalyst was designed herein to improve the separation of photocarriers.The GO/α-AgVO3 was fabricated through a facile in-situ coprecipitation method at room temperature.It was found that the as-prepared 0.5 wt％GO/α-AgVO3 exhibited the most excellent performance for rhodamine B(RhB)decomposition,with an apparent reaction rate constant 18 times higher than that of pure α-AgVO3 under visible-light irradiation.In light of the first-principles calculations and the hetero junction analysis,the mechanism underpinned the enhanced photocatalytic performance was proposed.The enhanced photocatalytic performance was ascribed to the appropriate bandgap ofα-AgVO3 nanorods for visible-light response and efficient separation of photocarriers through GO nanosheets.This work demonstrates the feasibility of overcoming the easy recombination of photogenerated carriers and provides a valuable GO/α-AgVO3 photocatalyst for pollutant degradation.