FeS nanoparticles-anchored mesoporous silica microspheres for efficient remediation in adsorbing and detoxifying U(VI) and Cr(VI)

IF 1.6 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-09-06 DOI:10.1007/s10967-025-10371-0

Yanran You, Hongtao Zhu, Hongliang Dong, Guodong Sheng

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引用次数: 0

Abstract

In this work, FeS was anchored on mesoporous silica microspheres (SiO₂200, SiO₂500, and SiO₂1000), and named as FeS@SiO₂ (i.e., FeS@SiO₂200, FeS@SiO₂500, FeS@SiO₂1000), in adsorbing and detoxifying U(VI)/Cr(VI) from wastewater. Results demonstrated that FeS@SiO₂ exhibited higher efficiency towards U(VI)/Cr(VI), outperforming FeS and SiO₂ alone. Kinetic investigations revealed that adsorption of U(VI)/Cr(VI) followed pseudo–second–order model best, highlighting effective chemical interplay. XPS investigations demonstrated multi–species which was included FeS, Fe(II), S²⁻ and polysulfide (S₂²⁻, S_n²⁻) could be employed as reductants for U(VI)/Cr(VI) adsorption. The combination of SiO₂ and FeS offered an enhanced efficiency for U(VI)/Cr(VI), making these composites promising materials in water purification.

Graphical Abstract

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纳米颗粒锚定介孔二氧化硅微球对U（VI）和Cr（VI）吸附和解毒的有效修复

在这项工作中，将FeS固定在介孔二氧化硅微球（SiO2200， SiO2500和SiO21000）上，并命名为FeS@SiO2（即FeS@SiO2200， FeS@SiO2500, FeS@SiO21000），以吸附和解毒废水中的U(VI)/Cr（VI）。结果表明，FeS@SiO2对U(VI)/Cr（VI）的处理效率更高，优于单独使用FeS和SiO2。动力学研究表明，U(VI)/Cr（VI）的吸附最符合准二阶模型，显示出有效的化学相互作用。XPS研究表明，FeS、Fe（II）、S2−和多硫化物（S22−、Sn2−）均可作为U(VI)/Cr（VI）的还原剂。SiO2和FeS的结合提高了U(VI)/Cr（VI）的效率，使这些复合材料在水净化中具有很大的应用前景。图形抽象

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.