期刊论文

Preparation of ZnS/AC Composites and Its Adsorption Performance for Uranyl Ions in Aqueous Solution

中文

精细化工

1003-5214

2019

36

4

751-758

10.13550/j.jxhg.20180608

湖南省自然科学基金项目（2017JJ2231）~~；

本校为第一机构

以硝酸锌、硫化钠和活性炭为原料,采用化学沉淀法制备活性炭(AC)负载纳米硫化锌的复合材料Zn S/AC。利用SEM、EDS、XRD、FTIR、BET等对其进行了表征。考察了Zn S/AC对水溶液中铀酰离子(UO22+)的吸附性能,探讨了吸附时间、初始铀酰离子质量浓度、pH、吸附剂投加量、温度等对吸附性能的影响,并对吸附过程进行了热力学和动力学模拟,探讨了吸附机理。结果表明,Zn S/AC的比表面积为201.1961m^2/g,明显大于活性炭的比表面积(165.0240 m^2/g),平均孔径为4.70 nm,孔容为0.038 cm^3/g。在初始铀酰离子质量浓度为35 mg/L、pH=6、吸附时间为120 min、Zn S/AC投加量为0.01 g、处理温度为50℃下,吸附剂对铀酰...

Zinc sulfide nanoparticles loaded on activated carbon (ZnS/AC) was prepared by chemical precipitation method using zinc nitrate, sodium sulfide and activated carbon as raw materials and characterized by SEM, EDS, XRD, FTIR and BET. The adsorption performance of ZnS/AC for uranyl ions in aqueous solution was studied. The effects of adsorption time, initial mass concentration of uranyl ions, pH value, adsorbent dosage and temperature on the adsorption performance of ZnS/AC were investigated. The adsorption processes were simulated by thermodynami...