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Facile one-pot synthesis of superfine palladium nanoparticles on polydopamine-functionalized carbon nanotubes as a nanocatalyst for the Heck reaction

引用

Journal of Materials Science & Technology 2021年第23期82卷 197-206页

作者： Zhengxiu Luo Ning Wang Xiaoyan Pei Tao Dai Zhigang Zhao Congmei Chen Maofei Ran Wenjing Sun College of Chemistry&Environment Protection Engineering Southwest Minzu UniversityChengdu610041China China-America Cancer Research Institute Key Laboratory for Medical Molecular Diagnostics of Guangdong ProvinceGuangdong Medical UniversityDongguanGuangdong523808China Advanced Membranes and Porous Materials Center Physical Sciences and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal23955-6900Saudi Arabia National Supercomputing Center in Shenzhen(Shenzhen Cloud Computing Center) GuangdongShenzhen518055China

Heterogeneous Pd nanocatalysts are efficient catalysts for the Heck reaction but require multi-step,sophisticated procedures and harsh reaction *** this work,a green and facile strategy has been developed to decorate Pd nanoparticles on polydopamine(PDA)-coated multi-walled carbon nanotubes(Pd/CNTs-PDA)via a one-pot *** obtained nanoparticles were characterized by various techniques including transmission electron microscopy,X-ray diffraction,and X-ray photoelectron spectroscopy,which proved that Pd NPs are well-dispersed on the PDA and between the surfaces of the PDA and *** resultant Pd/CNTs-PDA catalysts exhibit excellent catalytic reactivity toward the Heck reaction at low ***,by DFT simulation,we found that during the PDA polymerization process,a large number of unsaturated—N=and C=O species are more active than the groups on the PDA end product to anchor Pd *** results provide evidence that the catalyst synthesized by the onepot method exhibited good activity because sufficient active sites could be created to effectively promote Pd NPs dispersion during the dopamine polymerization ***,the Pd/CNTs-PDA catalyst was successfully employed in Heck cross-coupling reactions with various functionalized *** method opens a window for the fabrication of high-performance nanocomposite catalysts under mild conditions using simple methods and has several potential applications.

关键词： One-pot Pd/CNTs-PDA palladium nanocatalyst Nanocomposites Heck reaction

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