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Acta Phys. Chim. Sin.  2014, Vol. 30 Issue (9): 1720-1726    DOI: 10.3866/PKU.WHXB201407021
Facile Synthesis of Graphene-Cobalt Hydroxide Nanocomposite and Application in Degradation of Acid Orange 7
LI Jie-Bing1, YI Yu1, SHI Peng-Hui2, WANG Qian1, LI Deng-Xin1, ASIF Hussain1, YANG Ming1,3
1. State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, P. R. China;
2. College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China;
3. Research Center for Analysis & Measurement, Donghua University, Shanghai 201620, P. R. China
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In this study, a cobalt hydroxide-reduced graphene oxide (Co(OH)2/rGO) composite was synthesized by one-step self-assembly, and used as a catalyst in dye degradation. The catalyst was characterized using X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), energy-dispersive Xray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The catalyst had well-distributed Co(OH)2 nanoparticles on the reduced graphene oxide surface. The catalytic performance of this hybrid material was investigated for the activation of peroxymonosulfate (PMS), and used to degrade acid orange 7 (AO7) dye in aqueous solution. The experimental results showed that the composite had high catalytic activity in the degradation of AO7, and 100% decomposition was achieved in less than 12 min. Total organic carbon (TOC) experiments indicated a high degree of mineralization, suggesting excellent catalytic activity. Stability tests showed that the catalyst was stable in the degradation of AO7 over several runs. AO7 was completely degraded in 16 min in the third run.

Key wordsAdvanced oxidation      Peroxymonosulfate      Cobalt hydroxide      Graphene      Acid Orange 7     
Received: 14 April 2014      Published: 02 July 2014
MSC2000:  O643.32  

The project was supported by the Innovation Program of Shanghai Municipal Education Commission, China (12ZZ069), Shanghai Municipal Natural Science Foundation, China (11ZR1400400), Shanghai Tongji Gao Tingyao Environmental Science & Technology Development Foundation, China (STGEF), and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, China (LK1203).

Corresponding Authors: LI Deng-Xin     E-mail:
Cite this article:

LI Jie-Bing, YI Yu, SHI Peng-Hui, WANG Qian, LI Deng-Xin, ASIF Hussain, YANG Ming. Facile Synthesis of Graphene-Cobalt Hydroxide Nanocomposite and Application in Degradation of Acid Orange 7. Acta Phys. Chim. Sin., 2014, 30(9): 1720-1726.

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