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选用纳米椰壳活性炭为载体，利用浸渍法制备纳米FeS/CSC吸附剂用于钍（IV）的吸附测试，吸附剂样品用SEM、IR、XRD和BET表征分析。结果表明：纳米6%-FeS/CSC吸附剂能有效地吸附水液中钍（IV）离子，优化条件下去除率高达96.99%，单位吸附容量为116.39 mg/g。表征分析可知纳米FeS粒子均匀分布在椰壳炭的表面，比表面积大，钍（IV）与表层纳米FeS粒子易发生配位键合，吸附后微观表层结构保持不变。吸附过程更适合用Freundlich等温吸附模型描述，吸附速率符合准二阶动力学模型，具备明显的化学吸附特征，热力学实验表明此吸附具备吸热、熵增、自发的特点。
Abstract：Nano coconut shells activated carbon were selected as support materials,and nano FeS/CSC adsorbents were prepared by impregnation method for the adsorption testing of thorium(IV). The adsorbents were characterized and analyzed by SEM,IR,XRD and BET technology. The results indicated that thorium(IV) ions in aqueous solution was adsorbed by nano 6%-FeS/CSC adsorbent effectively,when the removal rate was high as 96.99% and the unit adsorption capacity was high as 116.39 mg/g under the optimized conditions. The characterization analysis of the adsorbent displayed that the nano FeS particles are uniformly distributed on the surface of coconut shell carbon with the large specific surface area. Thorium(IV) were prone to coordinate bonding with the surface nano FeS particles,and the microstructure of the micro surface was unchanged after adsorption. This adsorption process was more suitable to be described using the Freundlich isotherm adsorption model,and the adsorption rate was conformed to the second order kinetic model. The obvious chemical adsorption characteristics was shown. Thermodynamic experiments elucidated that this behavior showed the feature as endothermic,entropy increasing,and spontaneous.
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基本信息:
DOI：10.26962/j.cnki.1991.2026.0005
中图分类号:TQ424
引用信息:
[1]龙威,张增杰,朱永祥.椰壳炭负载FeS复合物高效吸附钍（IV）的性能[J].广东石油化工学院学报,2026,36(01):26-32.DOI:10.26962/j.cnki.1991.2026.0005.
基金信息:
广东石油化工学院大学生创新训练项目校级培育项目（71013407220）
2026-03-20
2026-03-20
2026-03-20