期刊
AICHE JOURNAL
卷 60, 期 8, 页码 2757-2764出版社
WILEY
DOI: 10.1002/aic.14499
关键词
graphene oxide; graphene; L-ascorbic acid; reducing ability; solution-chemical method
资金
- Natural Science Foundation of China [21006044, 51202110]
- Natural Science Foundation of Jiangsu Province [BK2012426, BK2012041]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- US DOE through the Center for Electrical Energy Storage [DE-AC-02-06CH11357]
We describe a facile and eco-friendly solution approach to chemically reduce graphene oxide (GO) to high-quality graphene using nontoxic inexpensive reductants. The reduction process and mechanism of a group of eco-friendly reductants were systematically studied. These reductants perform quite differently in terms of reduction rate (L-ascorbic acid [L-AA] > D-fructose> sucrose > glucose > sodium sulfite), density of small sp(2) domains (L-AA > sodium sulfite > glucose > sucrose > D-fructose), degree of reduction (L-AA > glucose > D-fructose> sodium sulfite > sucrose), and stability of the reduced GO suspension (L-AA > D-fructose> sucrose > glucose > sodium sulfite). L-AA shows the highest reducing ability, achieving the largest extent of reduction after 10 min in the presence of ammonia. Both residual oxygen functionalities and the adsorbed oxidization products of L-AA on the graphene surface are responsible for stabilizing the reduced GO suspension over several months. (C) 2014 American Institute of Chemical Engineers
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