Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11503
Title: Highly efficient graphene-based ternary composite catalyst with polydopamine layer and copper nanoparticles
Authors: Hu, HW
Xin, JH 
Hu, H 
Keywords: Catalytic activity
Dopamines
Graphene
Nanoparticles
Organic-inorganic hybrid composites
Issue Date: 2013
Source: ChemPlusChem, 2013, v. 78, no. 12, p. 1483-1490 How to cite?
Journal: ChemPlusChem 
Abstract: A synergistically integrated graphene-based ternary composite (rG-Cu) consisting of uniform natural polydopamine (Pdop)-functionalized graphene sheets (Dop-rG) and well-dispersed Cu nanoparticles (NPs) has been developed. By a one-step reduction and modification of graphene oxide with dopamine, water-dispersible Dop-rG was first prepared. Cu NPs were then incorporated homogeneously onto Dop-rG by a simple solution route leading to activated rG-Cu, which showed an ultrahigh catalytic activity and good reusability for catalytic reductions of different types of dyes, including methylene blue and azo-based acid and reactive dyes. It took only 30â s for complete reduction of methylene blue. In addition to the main action of the catalytically active component of the well-dispersed Cu NPs, the uniform adhesive Pdop layer and graphene base with large surface area and superior electron-transfer capacity are also believed to assist synergistically the catalytic reduction. The work has opened up a new avenue for synthesis of a graphene-based ternary composite with extraordinary catalytic activity for practical applications in addressing environmental protection issues. To purify dye pollutants: A uniform adhesive polydopamine layer, well-dispersed Cu nanoparticles, and graphene base with huge surface area and superior electron-transfer capacity (see figure) integrate synergistically into a graphene-based ternary composite catalyst with an ultrahigh catalytic activity towards reduction of dye pollutants.
URI: http://hdl.handle.net/10397/11503
ISSN: 2192-6506
DOI: 10.1002/cplu.201300124
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