Synthesis of novel flower-like layered double oxides/carbon dots nanocomposites for U(VI) and 241Am(III) efficient removal: Batch and EXAFS studies
Wen Hua Yaoa, Xiangxue Wanga b c d✉, Xiangxue Wanga b c d, Liang Yua, Shujun Yua, Pengcheng Gua, Yubing Suna e✉, Chao Xue, Jing Chend e, Tasawar Hayatd, Ahmed Alsaedia b d, Xiangke Wanga b c d, Xiangke Wanga b c d✉
- aCollege of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
- bCollaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences, Soochow University, 215123 Suzhou, PR China
- cDepartment of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China
- dNAAM Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- eCollaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, PR China
- ✉Corresponding author
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Abstract
Abstract Herein, a practical and simple calcination method was used to synthesize layered double oxides (denoted as LDO) and layered double oxides/carbon dots nanocomposites (denoted as LDO-C) for U(VI) efficient removal. The U(VI) adsorption on LDO and LDO-C were investigated under various experimental conditions, and the results indicated that U(VI) uptake on LDO and LDO-C were consumingly dependent on pH and ionic strength at pH > 6, and independent of ionic strength at pH 241 Am(III) than LDO. All in all, the efficient removal performance and superior versatility of LDO-C indicated that it could be applied as promising candidate for efficient immobilization of radioactive pollutant in environmental pollution management.