文献类型：期刊文献

英文题名：Synthesis and performance of PdMulti@HCS catalysts with Pd nanoparticles partially embedded in the inner wall of hollow carbon spheres for the direct synthesis of hydrogen peroxide from hydrogen and oxygen

作者：Shi, Yongyong Jiang, Donghai Zhao, Jingyun Wu, Lang Zhao, Chenchen Ma, Jun Pan, Hongyan Lin, Qian

第一作者：Shi, Yongyong

机构：[1] School of Chemistry and Chemical Engineering, Guizhou University, Guizhou, Guiyang, 550025, China; [2] Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou, Guiyang, 550025, China; [3] Guizhou Engineering Research Center of Efficient Utilization for Industrial Waste, Guizhou, Guiyang, 550025, China; [4] School of Chemical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China

第一机构：School of Chemistry and Chemical Engineering, Guizhou University, Guizhou, Guiyang, 550025, China

年份：2022

卷号：46

期号：27

起止页码：13315-13324

外文期刊名：New Journal of Chemistry

收录：EI(收录号：20222712305828);Scopus(收录号：2-s2.0-85133123670)

语种：英文

外文关键词：Carbon - Catalyst activity - Chlorine compounds - Nanoparticles - Oxygen - Palladium - Pore size - Shells (structures) - Sodium Borohydride - Synthesis (chemical)

摘要：PdMulti@HCS catalysts with Pd nanoparticles partially embedded in the inner wall of hollow carbon spheres were synthesized by a hard template method. The synthesis process of PdMulti@HCS catalysts and the influence of the pore structure of the hollow carbon shell on the catalytic performance for the direct synthesis of H2O2 from H2 and O2 were systematically researched in this work. When the mass ratio of resorcinol (R) and formaldehyde (F) was R/F = 0.20 g/0.286 g, the mass of CTAB was 2.0 g, and the additional amount of 0.075 M H2PdCl4 solution was 1.0 ml; Pd nanoparticles obtained by in situ reduction using freshly prepared NaBH4 solution with an average size of 6.7 nm showed good dispersion and partial embedding in the inner wall of the hollow carbon shell. The average size of cavity diameter and the hollow carbon shell thickness were 145 nm and 8.03 nm, respectively. More importantly, there were a large number of micropores with a pore size distribution of 1.5 nm in the hollow carbon shell. This special hollow structure ensured the maximum exposure of Pd active sites and the optimal transfer and diffusion ability, which were conducive to improving the catalytic activity and stability of the PdMulti@HCS catalysts. ? 2022 The Royal Society of Chemistry