文献类型：期刊文献

中文题名：Facile Synthesis and in situ TEM Observation of Nanoporous Pd for Enhanced Catalytic Applications

作者：Haiyang Liu[1];Kai Ke[1];Chang Li[1];Xin Chen[1];Yulian Wu[1]

机构：[1]Key Laboratory for Ultrafine Materials of Ministry of Education,and Shanghai Key Laboratory of Advanced Polymeric Materials,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China

年份：2019

卷号：37

期号：6

起止页码：565

中文期刊名：Chinese Journal of Chemistry

外文期刊名：中国化学(英文版)

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；

基金：the National Natural Science Foundation of China(No.21875066);the Shanghai Leading Academic Discipline Project(No.B502);the Shanghai Key Laboratory Project(No.08DZ2230500).

语种：英文

中文关键词：palladium;catalyst;in;situ;TEM;porous;structure;4-nitrophenol;reduction

摘要：A facile,efficient and green photochemical synthetic approach has been used to prepare sponge-like porous Pd nanoparticles.Obtained by ultraviolet irradiation using a K2PdCl4 precursor solution,the final products exhibited three dimensionally interconnected porous structures made up of~3.6 nm sized Pd nanoparticles.In situ liquid cell TEM results indicated such porous structures are in a dynamic stable state when the particles are distributed in aqueous solution.The porous Pd nanoparticles exhibited electrochemical active surface area(ECSA)of up to 43 m^2·g^–1 and mass activity of 1144 mA·mg^–1 in menthol oxidation,kapp of 0.22 min^–1 and normalized kapp/m(kn)of 8.3×10^4 min^–1·g^-1 in 4-nitrophenol(4-NP)reduction reactions.Comparing with the literature,it is demonstrated that our porous Pd nanoparticles with clean surfaces exhibited very high catalytic performances.This work may shed a light on facile and green synthesis of noble-metal particles with better catalytic performances.