气候变化领域集成服务门户(CCPortal): Efficient photoreduction strategy for uranium immobilization based on graphite carbon nitride/perovskite oxide heterojunction nanocomposites

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DOI	10.1016/j.apcatb.2021.120625
	Efficient photoreduction strategy for uranium immobilization based on graphite carbon nitride/perovskite oxide heterojunction nanocomposites
	Li, Shuyang; Yang, Xiaoyong; Cui, Zhenpeng; Xu, Yang; Niu, Zhiwei; Li, Ping; Pan, Duoqiang; Wu, Wangsuo
通讯作者	Pan, DQ (通讯作者)，Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0926-3373
EISSN	1873-3883
卷号	298
英文摘要	The photoreduction conversion of soluble U(VI) to insoluble U(IV) is an economical strategy for the efficient removal of uranium from radioactive wastewater. A graphite carbon nitride and pemvskite oxide heterojunction composite (g-C3N4/LaFeO3) is designed for the photocatalytic reduction of U(VI) under simulated sunlight conditions from aqueous solution, the reduction-immobilization mechanism is interpreted with the aid of spectroscopic evidence. The proposed heterojunction structure exhibits efficient removal ability (460 mg/g) over a wide range of U(VI) concentrations due to the suppressed recombination of photogenerated electron-hole pairs and the prolonged lifetimes of the photogenerated carriers. The catalytic efficiency is maintained at a high level after five cycles of reuse. The electrons on LaFeO3 transferred to valence band of g-C3N4, U(VI) is reduced by the electrons and center dot O-2(-) on the surface of g-C3N4. The g-C3N4/LaFeO3 heterojunction provides a promising strategy for the feasible recovery of U(VI) resources with inexhaustible solar energy.
关键词	G-C3N4 NANOSHEETS AQUEOUS-SOLUTION PHOTOCATALYST DEGRADATION CONVERSION LAFEO3
英文关键词	Uranium removal; Photoreduction; Carbon nitride; Perovskite oxide
语种	英语
WOS研究方向	Chemistry ; Engineering
WOS类目	Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000707412200005
来源期刊	APPLIED CATALYSIS B-ENVIRONMENTAL
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/254615
作者单位	[Li, Shuyang; Cui, Zhenpeng; Xu, Yang; Niu, Zhiwei; Pan, Duoqiang; Wu, Wangsuo] Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China; [Pan, Duoqiang; Wu, Wangsuo] Lanzhou Univ, Frontiers Sci Ctr Rare Isotopes, Lanzhou 730000, Peoples R China; [Yang, Xiaoyong] Southwest Univ Sci & Technol, Sch Natl Def Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China; [Li, Ping] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Yang, Xiaoyong] KTH Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden
推荐引用方式 GB/T 7714	Li, Shuyang,Yang, Xiaoyong,Cui, Zhenpeng,et al. Efficient photoreduction strategy for uranium immobilization based on graphite carbon nitride/perovskite oxide heterojunction nanocomposites[J]. 中国科学院西北生态环境资源研究院,2021,298.
APA	Li, Shuyang.,Yang, Xiaoyong.,Cui, Zhenpeng.,Xu, Yang.,Niu, Zhiwei.,...&Wu, Wangsuo.(2021).Efficient photoreduction strategy for uranium immobilization based on graphite carbon nitride/perovskite oxide heterojunction nanocomposites.APPLIED CATALYSIS B-ENVIRONMENTAL,298.
MLA	Li, Shuyang,et al."Efficient photoreduction strategy for uranium immobilization based on graphite carbon nitride/perovskite oxide heterojunction nanocomposites".APPLIED CATALYSIS B-ENVIRONMENTAL 298(2021).