Magnetic and Highly Recyclable Macroporous Carbon Nanotubes for Spilled Oil Sorption and Separation

被引：298

作者：

Gui, Xuchun ^{[1
]}

Zeng, Zhiping ^{[1
]}

Lin, Zhiqiang ^{[1
]}

Gan, Qiming ^{[1
]}

Xiang, Rong ^{[1
]}

Zhu, Yuan ^{[1
]}

Cao, Anyuan ^{[2
]}

Tang, Zikang ^{[1
,3
]}

机构：

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

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

[3] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2013年 / 5卷 / 12期

基金：

中国国家自然科学基金;

关键词：

carbon nanotube; spilled oil; sorption and desorption; sorption capacity; mechanical strength; recyclability; SELECTIVE REMOVAL; GRAPHENE; RECOVERY; AEROGELS; SPONGES; SURFACE; FOAM;

D O I：

10.1021/am4015007

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Development of sorbent materials with high selectivity and sorption capacity, easy collection and recyclability is demanding for spilled oil recovery. Although many sorption materials have been proposed, a systematic study on how they can be reused and possible performance degradation during regeneration remains absent. Here we report magnetic carbon nanotube sponges (Me-CNT sponge), which are porous structures consisting of interconnected CNTs with rich Fe encapsulation. The Me-CNT sponges show high mass sorption capacity for diesel oil reached 56 g/g, corresponding to a volume sorption capacity of 99%. The sponges are mechanically strong and oil can be squeezed out by compression. They can be recycled using through reclamation by magnetic force and desorption by simple heat treatment. The Me-CNT sponges maintain original structure, high capacity, and selectivity after 1000 sorption and reclamation cycles. Our results suggest that practical application of CNT macrostructures in the field of spilled oil recovery is feasible.

引用

页码：5845 / 5850

页数：7

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