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DOI10.1016/j.molliq.2021.117937
Modifying g-C3N4 with oxidized Ti3C2 MXene for boosting photocatalytic U(VI) reduction performance
Li, Shutong; Wang, Yun; Wang, Jingjing; Liang, Jianjun; Li, Yuqiang; Li, Ping
通讯作者Li, P (通讯作者),Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China.
发表日期2022
ISSN0167-7322
EISSN1873-3166
卷号346
英文摘要The photocatalytic reduction of U(VI) has been regarded as an efficient method for separating uranium from aqueous solution. This study is devoted to develop a catalyst with high photocatalytic efficiency for the reduction of U(VI). The decoration of Ti3C2 on carbon nitride (CN) remarkably improved the adsorption affinity for U(VI), the optical absorbance, and the separation efficiency of the photo-generated electrons and holes, which subsequently enhanced the photocatalytic performance for U(VI) reduction. Compared to pristine CN, the reaction constant of CN/TC-2 for the reduction of U(VI) improved by 14.05 times fold. Owing to the formation of TiO2 on Ti3C2 surface, an all-solid-state Z-scheme hetero-junction was formed, which was key for the efficient separation of charge carriers and the enhancement of the photocatalytic reactivity of CN/TC composites. During the photocatalytic reactions, U(VI) was reduced to U(IV), forming UO2+x (x < 0.25) deposits, and center dot O-2 acted as the dominant reduction species. (C) 2021 Elsevier B.V. All rights reserved.
关键词GRAPHITIC CARBON NITRIDESTATE Z-SCHEMEAQUEOUS-SOLUTIONHYDROGEN EVOLUTIONURANIUM EXTRACTIONVISIBLE-LIGHTTIO2REMOVALSPECTROSCOPYNANOSHEETS
英文关键词Photocatalysis; Uranium; Reduction; g-C3N4; Ti3C2
语种英语
WOS研究方向Chemistry ; Physics
WOS类目Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS记录号WOS:000754524400005
来源期刊JOURNAL OF MOLECULAR LIQUIDS
来源机构中国科学院西北生态环境资源研究院
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/253615
作者单位[Li, Shutong; Wang, Yun; Wang, Jingjing; Liang, Jianjun; Li, Yuqiang; Li, Ping] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Li, Shutong; Wang, Yun; Wang, Jingjing; Liang, Jianjun; Li, Yuqiang; Li, Ping] Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714
Li, Shutong,Wang, Yun,Wang, Jingjing,et al. Modifying g-C3N4 with oxidized Ti3C2 MXene for boosting photocatalytic U(VI) reduction performance[J]. 中国科学院西北生态环境资源研究院,2022,346.
APA Li, Shutong,Wang, Yun,Wang, Jingjing,Liang, Jianjun,Li, Yuqiang,&Li, Ping.(2022).Modifying g-C3N4 with oxidized Ti3C2 MXene for boosting photocatalytic U(VI) reduction performance.JOURNAL OF MOLECULAR LIQUIDS,346.
MLA Li, Shutong,et al."Modifying g-C3N4 with oxidized Ti3C2 MXene for boosting photocatalytic U(VI) reduction performance".JOURNAL OF MOLECULAR LIQUIDS 346(2022).
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