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ZnFe2O4/g-C3N4 S-scheme photocatalyst with enhanced adsorption and photocatalytic activity for uranium(VI) removal

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成果类型:
期刊论文
作者:
Dai, Zhongran;Zhen, Yuan;Sun, Yusu;Li, Le;Ding, Dexin
通讯作者:
Ding, Dexin(ddxusc@126.com)
作者机构:
[Ding, Dexin; Zhen, Yuan; Li, Le; Dai, Zhongran; Sun, Yusu] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
通讯机构:
[Dexin Ding] K
Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
语种:
英文
关键词:
Adsorption;Photoreduction;Removal;Uranium;Wastewater
期刊:
Chemical Engineering Journal
ISSN:
1385-8947
年:
2021
卷:
415
页码:
129002
基金类别:
This work was supported by the Hunan Provincial Natural Science Foundation for Excellent Young Scholars (2020JJ3028), the National Natural Science Foundation of China (51704170), the Key R&D Program of Hunan Province (2018SK2029), the Postdoctoral Science Foundation of China (2017 M612569), and the Research and Innovation Program for postgraduates in Hunan Province (CX20200923). Additionally, we thank Yuan Gao (China University of Mining and Technology) for the helpful discussion and Yu Mao (Hunan University) for the DFT calculations.
机构署名:
本校为第一机构
院系归属:
核资源工程学院
摘要:
The reduction of soluble hexavalent uranium (U(VI)) to insoluble tetravalent uranium (U(IV)) by photocatalytic method is an emerging and effective approach to remove U(VI) from aqueous solution. In this study, the ZnFe2O4/g-C3N4 (ZFOCN) step-scheme (S-scheme) heterojunction was synthesized and used as both adsorbent and photocatalyst for remove U(VI). The batch adsorption experiments showed that the adsorption process of U(VI) by ZFOCN matches the Langmuir isotherm and pseudo-second-order models, and its maximum Langmuir adsorption capacity (qm...

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