期刊论文

Peng, Guo-Wen(pgwnh@sohu.com)

中文

中国有色金属学报

1004-0609

2015

25

11

3237-3244

10.19476/j.ysxb.1004.0609.2015.11.037

国家自然科学基金资助项目(11205084) 湖南省科技厅项目(2014GK3079,2012GK3132) 衡阳市科技局项目(2014KS24) 南华大学科技创新团队项目(NHCXTD04) 湖南省大学生研究性学习和创新性实验项目((湘教通[2015]269号-247)

本校为第一且通讯机构

采用啤酒酵母菌为生物大孔模板,三嵌段聚合物(P123)为介孔相模板制备合成介孔氧化硅SBA-15。再采用Fe_3O_4为铁源,二乙基磷酰乙基三乙氧基硅烷(PTS)和氨丙基三乙氧基硅烷(APS)为有机改性基团,通过后嫁接法使有机改性基团对介孔氧化硅SBA-15进行功能化改性,得到新型功能化吸附剂G-PA-SBA-15,并通过扫描电镜、粉末X射线衍射和比表面分析仪分别表征吸附剂G-PA-SBA-15和SBA-15的结构。考察溶液pH值、吸附时间、铀初始浓度和温度等因素对吸附剂G-PA-SBA-15和SBA-15吸附铀的影响。结果表明:吸附剂G-PA-SBA-15直径均匀分布、孔径均一,吸附铀的最佳条件是pH值为6.0、吸附时间为1.0 h、铀初始浓度为20 mg...

Mesoporous silica SBA-15 was synthesized using Saccharomyces Cerevisiae as the biological macroporous templet, and using P123 as the mesoporous phase templet. The novel functional adsorbent G-PA-SBA-15 was prepared using Fe3O4 as the iron source, and using PTS and APS as the organic modification group by the functional modification of mesoporous silica SBA-15 after grafting. SEM, XRD and BET were used to characterize the structures of G-PA-SBA-15 and SBA-15, and the effects of pH value, adsorption time, initial concentration of uranium ions and...