title: Facile and green synthesis of palladium nanoparticles-graphene-carbon nanotube material with high catalytic activity.
abstract: We report a facile and green method to synthesize a new type of catalyst by coating Pd nanoparticles (NPs) on reduced graphene oxide (rGO)-carbon nanotube (CNT) nanocomposite. An rGO-CNT nanocomposite with three-dimensional microstructures was obtained by hydrothermal treatment of an aqueous dispersion of graphene oxide (GO) and CNTs. After the rGO-CNT composites have been dipped in K₂PdCl₄ solution, the spontaneous redox reaction between the GO-CNT and PdCl₄(2-) led to the formation of nanohybrid materials consisting rGO-CNT decorated with 4 nm Pd NPs, which exhibited excellent and stable catalytic activity: the reduction of 4-nitrophenol to 4-aminophenol using NaBH4 as a catalyst was completed in only 20 s at room temperature, even when the Pd content of the catalyst was 1.12 wt%. This method does not require rigorous conditions or toxic agents and thus is a rapid, efficient, and green approach to the fabrication of highly active catalysts.
authors: School of Chemistry & Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
authors: Tai
authors: T
authors: Sun
authors: Zheye
authors: Z
authors: Zhang
authors: Junwu
authors: J
authors: Xiao
authors: Chen
authors: C
authors: Chen
authors: Fei
authors: F
authors: Xiao
authors: Shuai
authors: S
authors: Wang
authors: Yunqi
authors: Y
authors: Liu
mesh_terms: D000627:Aminophenols / Q000138:chemical synthesis*; D002384:Catalysis; D003460:Crystallization; D006108:Graphite / Q000737:chemistry*; D055772:Green Chemistry Technology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009596:Nitrophenols / Q000737:chemistry*; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry*
chemical_list: D000627:Aminophenols; D037742:Nanotubes, Carbon; D009596:Nitrophenols; D010165:Palladium; D006108:Graphite
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