期刊论文

Preparation of graphene oxide/organo-modified bentonite composites and their adsorption on Cd(Ⅱ)

Xie, Shuibo(xiesbmr@263.net)

中文

复合材料学报

1000-3851

2018

35

11

3196-3204

10.13801/j.cnki.fhclxb.20180310.002

湖南省自然科学基金（2016JJ6125） 国家自然科学基金（11475080） 湖南省教育厅（15C1192）

本校为第一且通讯机构

以氧化石墨烯(GO)、膨润土(Bent)、十六烷基三甲基溴化铵(CTAB)为原料,合成了GO/有机改性Bent(OM-Bent)复合材料,用其处理浓度为10mg·L~(-1)的含Cd(Ⅱ)废水。研究了GO/OM-Bent复合材料中GO含量、pH、GO/OM-Bent复合材料投加量、反应时间、Cd(Ⅱ)初始浓度及共存离子对GO/OM-Bent复合材料吸附Cd(Ⅱ)的影响。结果表明:在pH值为6、GO质量分数为30wt%、GO/OM-Bent复合材料投加量为200mg·L~(-1)时,GO/OM-Bent复合材料吸附Cd(Ⅱ)效果最佳,120min即达到平衡,较同等条件下OM-Bent和GO单独作用时Cd(Ⅱ)吸附量分别高12.01mg·g~(-1)和5.39mg·g~(-1);准二级动力学模型能很好地描述其吸附过程,吸附等温线符...

Graphene oxide/organo-modified bentonite(GO/OM-Bent) composites were prepared by the synthesis of GO, Bent and cetyltrimethyl ammonium bromide (CTAB), then the composites were used to treat Cd(Ⅱ)-containing wastewater at a concentration of 10 mg•L -1 . The effects of GO content in GO/OM-Bent composite, pH value, GO/OM-Bent composite dosage, reaction time, initial concentration of cadmium and coexisting ions on adsorption of Cd(Ⅱ) by GO/OM-Bent composite were investigated by batch test. The adsorption results of GO/OM-Bent composites are bala...