人工晶体学报2018，Vol.47Issue(1)：57-63,7.
石英相二氧化硅纳米管的制备及其对Pb2+的吸附行为研究
Fabrication of Quartz Phase Silica Nanotubes by Sepiolite and Its Adsorption Property for Pb2 +
摘要
Abstract
The use of sepiolite as silicon source to fabricate silicon nanotubes(SNTs)without template and calcination was reported here.The obtained SNTs were characterized by XRD, FTIR and SEM. Finally, homogeneous tubular structure of silicon nanotubes has formed with 40-50 nm of outside diameter.The lumen diameter varied from 10 to 15 nm and length changed from 20 to 100 μm. Moreover,silicon nanotubes were used as adsorbents for the removal of Pb2+from aqueous solutions.The results show that the amount of adsorption of Pb2+increased with initial Pb2+concentration,contact time, temperature and solution pH.The values of the enthalpy(ΔH)and entropy of activation(ΔS)were 6. 28 kJ/mol and 69.8 J/mol· K,respectively,at pH 5.0.关键词
石英相/二氧化硅纳米管/海泡石/吸附性能Key words
quartz phase/silicon nanotube/sepiolit/adsorption property分类
化学化工引用本文复制引用
涂全,王芙香,李成阳,陈子玉,任国建,陈祎平,潘勤鹤,张才灵..石英相二氧化硅纳米管的制备及其对Pb2+的吸附行为研究[J].人工晶体学报,2018,47(1):57-63,7.基金项目
国家自然科学基金(21761010),海南自然科学基金(20162018) （21761010）
