Flexible superhydrophobic polysiloxane aerogels for oil-water separation via one-pot synthesis in supercritical CO2

被引：32

作者：

Zou, Fangxin ^{[1
]}

Peng, Li ^{[2
]}

Fu, Wenxin ^{[1
]}

Zhang, Jianling ^{[2
]}

Li, Zhibo ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Inst Chem, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing 100190, Peoples R China

[3] Qingdao Univ Sci & Technol, Sch Polymer Sci & Engn, Qingdao 266042, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 93期

基金：

中国国家自然科学基金;

关键词：

SILICA AEROGELS; MECHANICAL-PROPERTIES; MEMBRANES; ROBUST;

D O I：

10.1039/c5ra13023a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Porous aerogels are an inspiring absorbent for oil-water separation and water purification. In particular, hydrophobic silica aerogels from abundant and cheap sources offer both economical and environmental benefits. Conventional silica aerogels from alkoxy siloxane precursors involve time-consuming and laboursome multistep processes. Herein, we demonstrate the formation of flexible superhydrophobic polysiloxane aerogels through a facile hydrosilylation from functionalized polydimethylsiloxane in supercritical carbon dioxide. This robust aerogel exhibits a high oil absorption capacity, superior recyclability and extraordinary mechanical properties even under harsh heating and cooling cycles. These characters favor this polysiloxane aerogel as being more competitive than common alkoxy silica ones for oily water treatment, oil spill clean-up and oil recovery.

引用

页码：76346 / 76351

页数：6

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