APD Compressible Aerogel-Like Monoliths with Potential Use in Environmental Remediation

Materials

Xuesong Zhang¹  Ruixi Bai²  Hao Zhang²  Jianguo Li²  Zhigang Zhao²  Fan Yang²  Xian Zeng³ 

[1] Technology Beijing, Beijing 100083, China;CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China;;Institute of Nuclear Materials, University of Science &

关键词: aerogel;    ambient pressure drying;    monoliths;    rare earth;    absorption;    environmental remediation;    compressive deformation;    silica;    organic pollutants;   

DOI  :  10.3390/ma12203459

来源: DOAJ

【 摘 要 】

Ambient pressure dried (APD) silica-based aerogel-like monoliths are prepared using vinyltrimethoxysilane (VTMS) as the sole silicon source by a rare-earth-assisted process. The APD method avoids the processes of solvent exchange and surface modification, is cost-effective, and reduces the preparation period from several days or weeks to 30 h. By controlling the solvent proportions, products with excellent mechanical properties, including exceptional mechanical strength and elasticity, can be synthesized. The monoliths also exhibit the outstanding characteristics of high hydrophobicity and lipophilicity and can rapidly absorb 13.5 times their weight in chloroform, showing great potential as reusable materials for application toward the separation/extraction of organic pollutants and oils.

【 授权许可】

Unknown