期刊论文

Zhou Le-Zhou

中文

分析化学

0253-3820

2013

41

7

1080-1085

10.3724/SP.J.1096.2013.21255

本文系湖南省教育科研基金项目（11A021）

本校为其他机构

采用共表面活性剂法和嫁接法合成了孔道结构高度有序、粒径均匀且孔径较大的嵌段中孔材料SBA-15(SH),通过N_2吸附脱附实验测得材料的孔径为7.8 nm,比表面积为629 m~2/g,孔容为1.32 cm~3/g,核磁共振与红外光谱结果显示巯基的覆盖率达65%。探讨了嵌段中孔材料SBA-15(SH)动态吸附重金属离子的原理和最佳条件。在pH=7.5,常温下,Hg~(2+),Cd~(2+),Pb~(2+),Ag~+,Cr~(3+),Cr~(6+),Cu~(2+),Mn~(2+)和Zn~(2+)可被该材料定量吸附,动态吸附容量分别为17.1,18.7,22.6,12.7,9.7,10.8,10.8,19.2和15.5 mg/g,吸附的重金属离子可用6 mol/L HCl-2 g/L硫脲洗脱,采用原子荧光和原子吸收法测定过柱前后溶液及洗脱液中...

Block copolymer mesoporous material SBA-15(SH) was synthesized through the cosolvent and grafted method. Nitrogen adsorption technique showed that highly ordered circle channels and large meso-porous size was 7. 8 nm, surface area was 629 m(2) /g and pore volume was 1. 32 cm(3)/g. Solid-state nuclear magnetic resonance spectra suggested that the thiol coverage of the monolayers was 65%. The optimal conditions and the adsorbing principle for the determination were studied. Under conditions of pH = 7. 5 and normal temperature, mercury, cadmium, lead, silver, chromium, copper, manganese and zinc ...