Electrocatalytic Removal of Low-Concentration Uranium Using TiO(2 )Nanotube Arrays/Ti Mesh Electrodes

	Electrocatalytic Removal of Low-Concentration Uranium Using TiO(2 )Nanotube Arrays/Ti Mesh Electrodes
	Lin, Leiming; Liu, Tian ; Qie, Yukang; Liu, Wenbin; Meng, Ying; Yuan, Qingke; Luan, Fubo
	2022-09-20
Source Publication	ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN	0013-936X
Volume	56 Issue:18 Pages:13327-13337
Abstract	Groundwater containing naturally occurring uranium is a conventional drinking water source in many countries. Removal of low concentrations of uranium complexes in groundwater is a challenging task. Here, we demonstrated that the TiO2 nanotube arrays/Ti (TNTAs/Ti) mesh electrode could break through the concentration limit and efficiently remove low concentrations of uranium complexes from both simulated and real groundwater. U(VI) complexes in groundwater were electro-reduced to UO2 and deposited on the TNTAs/ Ti mesh electrode surface. The adsorption rate and electron transfer rate of the anatase TNTAs/Ti mesh electrode were twice that of the rutile TNTAs/Ti mesh electrode. Therefore, the anatase TNTAs/Ti mesh electrode exhibited excellent electrocatalytic activity toward the electrochemical removal of U(VI), which could work at a higher potential and significantly reduce the energy consumption of U(VI) removal. The U(VI) adsorption capacity on the anatase TNTAs/Ti mesh electrode was limited due to the low U(VI) concentration. However, the anatase TNTAs/Ti mesh electrode displayed a huge U(VI) removal capacity using the electroreduction method, where adsorption and reduction of U(VI) were mutually promoted and induced continuous accumulation of UO2 on the electrode. The accumulated UO2 can be easily recovered in dilute HNO3, and the electrode can be used repeatedly.
Department	中国科学院饮用水科学与技术重点实验室 ; 中国科学院饮用水科学与技术重点实验室
Keyword	NANOTUBE ARRAYS TITANIUM-DIOXIDE ADSORPTION KINETICS WATER DISSOLUTION REDUCTION MECHANISM DENSITY FORMS
Document Type	期刊论文
Identifier	https://ir.rcees.ac.cn/handle/311016/47843
Collection	中国科学院饮用水科学与技术重点实验室
Corresponding Author	Luan, Fubo
Affiliation	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation GB/T 7714	Lin, Leiming,Liu, Tian,Qie, Yukang,et al. Electrocatalytic Removal of Low-Concentration Uranium Using TiO(2 )Nanotube Arrays/Ti Mesh Electrodes[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022,56(18):13327-13337.
APA	Lin, Leiming.,Liu, Tian.,Qie, Yukang.,Liu, Wenbin.,Meng, Ying.,...&Luan, Fubo.(2022).Electrocatalytic Removal of Low-Concentration Uranium Using TiO(2 )Nanotube Arrays/Ti Mesh Electrodes.ENVIRONMENTAL SCIENCE & TECHNOLOGY,56(18),13327-13337.
MLA	Lin, Leiming,et al."Electrocatalytic Removal of Low-Concentration Uranium Using TiO(2 )Nanotube Arrays/Ti Mesh Electrodes".ENVIRONMENTAL SCIENCE & TECHNOLOGY 56.18(2022):13327-13337.

Files in This Item:		Download All
File Name/Size	DocType	Version	Access	License
Electrocatalytic Rem（8337KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	View Download

File name:	Electrocatalytic Removal of Low-Concentration Uranium Using TiO2 Nanotube Arrays_Ti Mesh Electrodes.pdf
Format:	Adobe PDF

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院生态环境研究中心