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Functionalized hierarchically porous carbon doped boron nitride for multipurpose and efficient treatment of radioactive sewage.
Zhang, Peng; Chen, Yawen; Chen, Yizhi; Guo, Qiqi; Liu, Yusen; Yang, Yu; Cao, Qi; Chong, Hanbao; Lin, Mingzhang.
Afiliação
  • Zhang P; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Chen Y; Beijing National Laboratory for Molecular Sciences, Fundamental Science Laboratory on Radiochemistry & Radiation Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
  • Chen Y; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Guo Q; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Liu Y; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Yang Y; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China; Reactor Operation and Application Research Sub-Institute, Nuclear Power Institute of China, Chengdu, Sichuan 610041, China.
  • Cao Q; Reactor Operation and Application Research Sub-Institute, Nuclear Power Institute of China, Chengdu, Sichuan 610041, China.
  • Chong H; Instruments Center for Physical Science, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Lin M; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China. Electronic address: gelin@ustc.edu.cn.
Sci Total Environ ; 866: 161378, 2023 Mar 25.
Article em En | MEDLINE | ID: mdl-36610624
In order to recycle Uranium (U) for the sustainable development of nuclear energy, diamide bipyridine (DABP) modified hierarchically porous carbon doped boron nitride (BCN-DABP) was synthesized as an adsorbent for the multipurpose removal of U. BCN-DABP displayed good adsorption performance for U in both weakly and highly acidic solutions. The hierarchically porous structure endowed BCN-DABP with ultrafast adsorption kinetics, and adsorption reached equilibrium within 180.0 and 0.5 min under pH = 4.0 and 2.00 mol L-1 HNO3, respectively. Moreover, combination of adsorption isotherm studies and DFT calculations showed that BCN-DABP possessed high adsorption capacities for U and displayed different adsorption performance under different conditions. BCN-DABP adsorbed UO22+ by chelation and electrostatic attraction under pH 4.0 and 2.00 mol L-1 HNO3, the maximum adsorption capacity under two conditions reached 818.7 and 1296.7 mg g-1, respectively. As a result, BCN-DABP is expected to be used for the rapid and efficient removal of U in various kinds of contaminated water. Furthermore, excellent salinity tolerance, good adsorption selectivity, and outstanding radiation resistance also endowed BCN-DABP with great practical potential for removing U in radioactive contaminated water as well as high level liquid waste.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article
Texto completo
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article