文献类型：期刊文献

英文题名：Efficient adsorptive and reductive removal of U(VI) and Se(IV) using porous hexagonal boron nitride supported nanoscale iron sulfide: Performance and mechanism

作者：Kou, Jisheng[1,2];Wei, Xiangyue[1,2];Wu, Hui[3];Linghu, Wensheng[3];Sheng, Guodong[3];Pan, Yixin[1]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Zhejiang, Peoples R China;[2]Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing, Peoples R China;[3]Shaoxing Univ, Sch Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China

年份：2022

卷号：359

外文期刊名：JOURNAL OF MOLECULAR LIQUIDS

收录：SCI-EXPANDED(收录号：WOS:000804990600004)、、EI(收录号：20222212178894)、Scopus(收录号：2-s2.0-85130876495)、WOS

基金：The work was supported by the Scientific Research Foundation of Shaoxing University (13011001015006, Computational Fluid Dynamics) and Zhejiang Basic Public Welfare Research project in 2018 year (LGG18B070002) .

语种：英文

外文关键词：FeS@h-BN; Removal; U(VI); Se(IV); Speciation

外文摘要：The removal of U(VI) and Se(IV) in an aqueous solution was investigated by batch experiments and characterized by spectroscopy techniques such as FTIR, XRD, SEM, TEM, XPS, using FeS@h-BN nanocomposite which was synthesized by hexagonal BN (h-BN) as the stabilizer anchored onto FeS nanoparticles to address the agglomeration of the FeS. The effects of pH, adsorbent concentration, contact time, and initial concentration of U(VI) and Se(IV) on FeS@h-BN adsorption U(VI) and Se(IV) were studied. Results showed that FeS@h-BN nanocomposite showed an excellent decontamination performance due to the large surface area and surface potential. A pseudo-second-order kinetic model well reflected the kinetic adsorption of U(VI) and Se(IV) which indicated chemical interaction mainly contributed to U(VI) and Se(IV) adsorption on FeS@h-BN. The adsorption process of removing U(VI) fitted Freundlich and D-R models well which presented multilayer adsorption on the nanocomposite surface. The Langmuir model fitted well with sorption isotherm data of Se(IV) removal displaying a single monolayer reaction between Se (IV) and FeS@h-BN. The adsorption of U(VI) and Se(IV) was high pH-dependent since pH affected the FeS@h-BN nanocomposite surface potential and U(VI) and Se(IV) speciation. The maximum sorption capacity of U(VI) and Se(IV) reached 163.11 and 196.39 mg/g, respectively. These results reveal that FeS@h-BN nanocomposite could be promising for the effective decontamination of U(VI) and Se(IV).(c) 2022 Elsevier B.V. All rights reserved.