Ultralight carbon aerogel from nanocellulose as a highly selective oil absorption material

被引：178

作者：

Meng, Yujie ^{[1
]}

Young, Timothy M. ^{[1
]}

Liu, Peizhi ^{[2
]}

Contescu, Cristian I. ^{[3
]}

Huang, Biao ^{[1
,4
]}

Wang, Siqun ^{[1
]}

机构：

[1] Univ Tennessee, Ctr Renewable Carbon, Dept Forestry Wildlife & Fisheries, Knoxville, TN 37996 USA

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[3] Oak Ridge Natl Lab, Oak Ridge, TN USA

[4] Fujian Agr & Forestry Univ, Coll Engn, Fuzhou, Peoples R China

来源：

CELLULOSE | 2015年 / 22卷 / 01期

关键词：

Nanocellulose; Carbon aerogel; Oil absorption; 3D network structure; CELLULOSE FIBERS; ABSORBENT; EFFICIENT; FIBRILS; SPONGE;

D O I：

10.1007/s10570-014-0519-5

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

The synthesis of a sponge-like carbon aerogel from microfibril cellulose, with high porosity (99 %), ultra-low density (0.01 g/cm(3)), hydrophobic properties (149 degrees static contact angle) and reusability is reported in this paper. The physical properties, internal morphology, thermal properties, and chemical properties of carbon aerogels heat-treated at 700 and 900 degrees C (Samples C-700 and C-900) were examined. Stabilization and carbonization parameters were optimized in terms of residual carbon yield. The BET surface area of Sample C-700 (521 m(2)/g) was significantly higher than of Sample C-950 (145 m(2)/g). Graphitic-like domains were observed in C-950. The highest normalized sorption capacity (86 g/g) for paraffin oil was observed in sample C-700. The removal of hydrophilic function groups during carbonization causes carbon aerogel to present highly hydrophobic properties. Carbon aerogel's ability to absorb oil is enhanced by its highly porous 3D network structure with interconnected cellulose nanofibrils.

引用

页码：435 / 447

页数：13