Graphene sponge for efficient and repeatable adsorption and desorption of water contaminations

IMR OpenIR

	Graphene sponge for efficient and repeatable adsorption and desorption of water contaminations
	J. P. Zhao; W. C. Ren; H. M. Cheng
	2012
发表期刊	Journal of Materials Chemistry
ISSN	0959-9428
卷号	22 期号:38 页码:20197-20202
摘要	Seeking highly-efficient, low-cost and robust methods to disinfect and decontaminate water from source to point-of-use is very much in demand. Here, we developed a new material, graphene sponge (GS), for water treatment, which was assembled with graphene oxide sheets by hydrothermal treatment with the assistance of thiourea. These GSs show a tunable pore structure and surface properties, and are mechanically strong. They show high adsorption ability for various water contaminations such as dyes, oils and many other organic solvents. The adsorption capacity of methylene blue and diesel oil in GSs can reach 184 mg g(-1) and 129 g g(-1), respectively. Moreover, the GSs can be repeatedly used by simple treatment without obvious structure and performance degradation. Additionally, we studied the relationship between the structure and contamination adsorption performance of GSs. It was found that the dye adsorption performance of GSs strongly depends on their surface charge concentration and specific surface area, but the oil adsorption capacity is mainly related to their specific surface area, indicating the different adsorption mechanism. These findings open up many possibilities for the use of graphene in water cleaning, including disinfection, decontamination, re-use, reclamation and desalination.
部门归属	[zhao, jinping; ren, wencai; cheng, hui-ming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;ren, wc (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;wcren@imr.ac.cn
关键词	Carbon Nanotube Sponges Activated Carbon Rhodamine-b Basic Dye Aqueous-solution Surface-chemistry Methylene-blue Oxide Adsorbents Removal
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60481
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. P. Zhao,W. C. Ren,H. M. Cheng. Graphene sponge for efficient and repeatable adsorption and desorption of water contaminations[J]. Journal of Materials Chemistry,2012,22(38):20197-20202.
APA	J. P. Zhao,W. C. Ren,&H. M. Cheng.(2012).Graphene sponge for efficient and repeatable adsorption and desorption of water contaminations.Journal of Materials Chemistry,22(38),20197-20202.
MLA	J. P. Zhao,et al."Graphene sponge for efficient and repeatable adsorption and desorption of water contaminations".Journal of Materials Chemistry 22.38(2012):20197-20202.