Graphene controlled solid-state growth of oxygen vacancies riched V_(2)O_(5)catalyst to highly activate Fenton-like reaction  

作　　者：Mengxiang Zhu Tao Ding Yunzhang Li Yuanjie Peng Ruiping Liu Quan Zou Leilei Yang Shenglei Sun Pin Zhou Guosheng Shi Dongting Yue 

机构地区：[1]Shanghai Applied Radiation Institute,State Key Lab.Advanced Special Steel,Shanghai University,Shanghai 200444,China [2]Center for Soil Protection and land scape Design,Chinese Academy of Environmental Planning,Beijing 100041,China [3]Zhejiang Grearth Ecological Co.,Ltd.,International Trade Center Office Building,Hangzhou 311400,China [4]Institute of Balsalt Fiber in Eco-Application,School of Environmental Science and Engineering,Qingdao University,Qingdao 266071,China [5]Research Center of secondary Resources and Environment,Changzhou Institute of Technology,Changzhou 213032,China

出　　处：《Chinese Chemical Letters》2024年第12期356-359,共4页中国化学快报（英文版）

基　　金：supported by the National Key R&D Program of China(No.2019YFC1803900);the National Natural Science Foundation of China(Nos.U1932123,22073069,21773082,and 42107402);the National Science Fund for Outstanding Young Scholars(No.11722548);the University of Chinese Academy of Sciences(No.WIUCASOD2021014)。

摘　　要：Fenton-like process based on metal oxide presents one of the most hoping strategies to generate reactive oxygen species to treat refractory pollutants.The introduction of oxygen vacancies(OVs)can enhance the catalytic performance of metal oxides in Fenton-like reaction.In this paper,a one-step all solid-state synthesis strategy is proposed to induce oxygen defects in V_(2)O_(5),which uses graphene to engineer the crystallization process of V-based crystals.Such approach employs graphene as a solid-catalyst to promote growth of V-based crystals owing to the ions-πinteractions between graphene and VCl_(3).The electrondonor OVs in V_(2)O_(5)@graphene can not only active H_(2)O_(2)for the·OH generation,but also accelerate the reduction of V^(5+)and V^(4+),thereby ensuring defective V_(2)O_(5)@graphene/H_(2)O_(2)system is 14.3,28.2,and 17.3times higher than that of graphene/H_(2)O_(2),pure V_(2)O_(5)/H_(2)O_(2)and graphene+V_(2)O_(5)/H_(2)O_(2)(mechanical mixed system),respectively.Our study provides a novel synthetic strategy to design and prepare OVs-riched transition metal catalysts for developing advanced oxidation technologies toward higher sustainability and practicality.

关 键 词：Oxygen vacancies FENTON-LIKE CATALYSIS V_(2)O_(5) Solid-state synthesis 

分 类 号：TQ426[化学工程] X703[环境科学与工程—环境工程]