Elastic shape recovery of carbon nanotube sponges in liquid oil

被引：26

作者：

Gui, Xuchun ^{[2
]}

Zeng, Zhiping ^{[2
]}

Cao, Anyuan ^{[1
]}

Lin, Zhiqiang ^{[2
]}

Zeng, Haiqiang ^{[2
]}

Xiang, Rong ^{[2
]}

Wu, Tianzhun ^{[2
]}

Zhu, Yuan ^{[2
]}

Tang, Zikang ^{[2
]}

机构：

[1] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China

[2] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 35期

基金：

北京市自然科学基金; 美国国家科学基金会;

关键词：

TEMPERATURE-INVARIANT VISCOELASTICITY; SELECTIVE ABSORPTION; MEMBRANES; GRAPHENE; ENERGY; WATER; COMPRESSIBILITY; COMPOSITES; SOLIDS; LAYERS;

D O I：

10.1039/c2jm33686c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Self-assembled porous nanomaterials are potential candidates for applications such as filtration, adsorption and cleanup, yet their interactions with the surrounding environment and structural stability under external loads or fluid flow have not been adequately studied. Here, we investigated mechanical deformation and shape recovery of bulk carbon nanotube sponges immersed in various liquid oils under repeated compression cycles at large strains (50%). The nanotube sponges show virtually elastic recovery to their original volume (> 98%) in the presence of oil, compared to other media such as air or water in which significant plastic deformation occurs. Oil was squeezed out of the sponge pores during compression and then sucked into the sponges to enable structure recovery when load is released, indicating the possibility for recycled oil adsorption. Smooth oil infiltration into the nanotube sponges by laminar flow is a critical factor for maintaining stable isotropic nanotube networks and promoting fast volume expansion with a thickness recovery rate of > 10 mm min(-1) in low-viscosity oils. Our carbon nanotube sponges might be used in environmental applications such as oil adsorption and spill cleanup with enhanced robustness and recyclability.

引用

页码：18300 / 18305

页数：6

共 33 条

[31] Magnetorheology of single-walled carbon nanotube dispersions in mineral oil [J].

Yang, Zhengtao ;

Bahr, Jeffrey ;

D'Souza, Nandika Anne .

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 2008, 19 (10) :1143-1152

[32] Superwetting nanowire membranes for selective absorption [J].

Yuan, Jikang ;

Liu, Xiaogang ;

Akbulut, Ozge ;

Hu, Junqing ;

Suib, Steven L. ;

Kong, Jing ;

Stellacci, Francesco .

NATURE NANOTECHNOLOGY, 2008, 3 (06) :332-336

[33] Energy-Absorbing Hybrid Composites Based on Alternate Carbon-Nanotube and Inorganic Layers [J].

Zhang, Qiang ;

Zhao, Mengqiang ;

Liu, Yi ;

Cao, Anyuan ;

Qian, Weizhong ;

Lu, Yunfeng ;

Wei, Fei .

ADVANCED MATERIALS, 2009, 21 (28) :2876-+

← 1 2 3 4 →