Highly Efficient Uranium Capture via Crystalline Water Coordination Coupling with Cation Exchange and Surface Redox Reaction Mechanisms within an Open-Framework Vanadoborate

Li, Jing1; Gong, Zhiheng2; Ni, Yueran1,3; Feng, Xuezhen1; Wu, Xiaoyong3; Zhang, Gaoke3; Guo, Yadan2; Chen, Hong1

2022-08-01

10.1021/acsestwater.2c00215

ACS ES&T WATER   影响因子和分区

2690-0637

Developing highly efficient adsorbents for uranium contaminated wastewater treatment has aroused tremendous attention due to the radioactive feature and environmental hazards. Herein, the 3D vanadoborate framework SUT-6 constructed from (VO)(12)O6B18O36(OH)(6) clusters bridged by ZnO4(H2O) is evaluated for uranium removal, with a UO22+ adsorption capacity of up to 347.7 mg/g under the optimal pH of 4.0. It exhibits high selectivity to UO22+ with the existence of various common interfering cations and anions. In addition, the adsorption efficiency of SUT-6 is above 92% after the third round of the adsorption-desorption process. Most importantly, SUT-6 retains great UO22+ adsorption performance in uranium-contaminated environmentally relevant water sources, including natural river water and groundwater. Comprehensive characterization techniques were employed to probe the uranium speciation and accurate atomic-scale position after adsorption, to determine the adsorption mechanism. Results show that SUT-6 is promising for UO22+ capture based on the unique crystalline water coordination coupling with cation exchange and surface redox chemistry mechanisms under complicated environmental water conditions. This work provides new insights into designing highly efficient uranium adsorbents for practical uranium capture.

inorganic microporous borate uranium synergistic adsorption mechanism atomic-scale interaction environmental relevant polluted water

ESCI

英语

第一 ; 通讯

National Natural Science Foundation of China[21777045] ; National Natural Science Funds for Distinguished Young Scholar of Guangdong Province, China[2020B151502094] ; Foundation of Shenzhen Science and Technology Innovation Commission[JCYJ20200109141625078] ; National Key Research and Development Program of China[2021YFA1202500] ; Special Fund for the Science and Technology Innovation Strategy of Guangdong Province[PDJH2021C0033]

Environmental Sciences & Ecology ; Water Resources

Environmental Sciences ; Water Resources

WOS:000849333200001

AMER CHEMICAL SOC

Web of Science

1.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Guangdong Prov Key Lab Soil & Groundwater Pollut C, Shenzhen 518055, Peoples R China
2.East China Univ Technol, Sch Water Resources & Environm Engn, State Key Lab Nucl Resources & Environm, Nanchang 330013, Peoples R China
3.Wuhan Univ Technol, Sch Resources & Environm Engn, Hubei Key Lab Mineral Resources Proc & Environm, Wuhan 430070, Peoples R China

Li, Jing,Gong, Zhiheng,Ni, Yueran,et al. Highly Efficient Uranium Capture via Crystalline Water Coordination Coupling with Cation Exchange and Surface Redox Reaction Mechanisms within an Open-Framework Vanadoborate[J]. ACS ES&T WATER,2022.

Li, Jing.,Gong, Zhiheng.,Ni, Yueran.,Feng, Xuezhen.,Wu, Xiaoyong.,...&Chen, Hong.(2022).Highly Efficient Uranium Capture via Crystalline Water Coordination Coupling with Cation Exchange and Surface Redox Reaction Mechanisms within an Open-Framework Vanadoborate.ACS ES&T WATER.

Li, Jing,et al."Highly Efficient Uranium Capture via Crystalline Water Coordination Coupling with Cation Exchange and Surface Redox Reaction Mechanisms within an Open-Framework Vanadoborate".ACS ES&T WATER (2022).