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Microwave-assisted synthesis of oxygen vacancy associated TiO_(2)for efficient photocatalytic nitrate reduction

查看全文 作　　者：Qian [1]Li;Yunni [2]Liu;Zhe [1]Wan;Haiyan [1]Cao;Shao [1]Zhang;Yue [1]Zhou;Xingyu [1]Ye;Xiaoyan [1]Liu;Dieqing [1]Zhang 高影响力作者 机构地区：[1]The Education Ministry Key Lab of Resource Chemistry,Joint International Research Laboratory of Resource Chemistry,Ministry of Education,and Shanghai Key Laboratory of Rare Earth Functional Materials,College of Chemistry and Materials Science,Shanghai Normal University,Shanghai 200234,China;[2]School of Environmental and Geographical Sciences,Shanghai Normal University,Shanghai 200234,China高影响力机构 出　　处：《Chinese Chemical Letters》索引2022年第33卷第8期,共7页高影响力期刊 基　　金：supported by the National Key Research and Development Program of China(No.2020YFA0211004);and National Natural Science Foundation of China(Nos.21876112,21876113,22022608,92034301);“111”Innovation and Talent Recruitment Base on Photochemical and Energy Materials(No.D18020);Ministry of Education,and Shanghai Key Laboratory of Rare Earth Functional Materials,Shanghai Engineering Research Center of Green Energy Chemical Engineering(Nos.18DZ2254200);Shanghai government(Nos.18SG41,309-AC9103-21-413002,19YF1436600)。 摘　　要：The solar-driven photocatalytic technology has shown great potential in nitrate(NO_(3)^(-))pollutants reduction,however,it has been greatly hindered by the complex preparation and high cost of photocatalysts.Herein,a relatively low-cost photocatalyst,rutile and anatase mixed phase TiO_(2) was synthesized by a facile microwave-hydrothermal method.Meanwhile,oxygen vacancy is successfully generated,leading to an acidic surface for strong adsorption towards NO_(3)^(-),which further improved the reduction activity.Compared with the commercial P25,a higher NO_(3)^(-) conversion of ca.100%and nitrogen(N_(2)) selectivity of 87%were achieved under UV(365 nm)irradiation within 2 h.This research provides a promising strategy for designing efficient noble metal free photocatalyst in the NO_(3)^(-) reduction. 关 键 词：PHOTOCATALYSIS TiO_(2) Oxygen vacancy Nitrate reduction
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