期刊论文

Wang, Guohua(wghcsu@163.com);Wang, Guohua(wghcsu@163.com)

中文

复合材料学报

1000-3851

2022

39

10

4868-4878

10.13801/j.cnki.fhclxb.20211116.003

51904155:国家自然科学基金 2022JJ30490:湖南省自然科学基金项目

本校为第一机构

为了提高纳米材料MXene的吸附能力和可回收性,采用离子交联法将海藻酸钠(SA)和MXene混合,使Ti_3C_2Tx MXene纳米材料固定在SA凝胶基质上,经冷冻干燥后制备了MXene/SA凝胶微球。通过SEMEDS 、FTIR和XPS对凝胶微球结构进行了表征,并考察了不同因素影响下MXene/SA凝胶微球对水溶液中铀(VI)的吸附特性,并探究了其循环再生能力。结果表明,MXene/SA凝胶微球对铀吸附过程遵循拟二级动力学和Langmuir等温吸附模型,说明该吸附主要为单分子层化学吸附,且热力学参数表明其吸附过程是一个自发吸热的过程。在pH为4,温度为298 K时,MXene/SA凝胶微球对铀的最大吸附量为126.82 mg·g~(-1),其主要吸附机制是离子交...

In order to improve the adsorption capacity and recyclability of the nanomaterial MXene, sodium alginate (SA) and MXene were mixed by ion cross-linking method to fix the Ti3C2TxMXene nanomaterial on the SA aerogel matrix. After freeze-drying, MXene/SA gel microspheres was prepared. The structure of the gel microspheres was characterized by SEM-EDS, FTIR and XPS, and the adsorption characteristics of MXene/SA gel microspheres to uranium (VI) in aqueous solution were investigated under the influence of different factors, and its recycling ability...