文献类型：期刊文献

英文题名：Confinement Effect of Hollow Nanoreactors Enforcing the Formation of Pd-NixOy Hybrid Nanoparticles Inside for 4-Nitrophenol Catalytic Reduction

作者：Ye, Huanru[1]; Hu, Ru[1]; Wang, Zizhu[1]; Wang, Junyou[1]; Zhou, Shenghu[1]

机构：[1] Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China

年份：2024

卷号：63

期号：1

起止页码：288

外文期刊名：Industrial and Engineering Chemistry Research

收录：EI(收录号：20240215335816)

语种：英文

外文关键词：Ethylene - Hydrogenation - Metal nanoparticles - Microemulsions - Nickel - Nickel compounds - Palladium - Reusability - Sodium Borohydride - Synthesis (chemical)

摘要：Due to the synergistic effect, metal-metal oxide hybrid nanoparticles can greatly improve their catalytic performance for hydrogenation reactions. However, controllable formation of close contact metal-metal oxide hybrid nanoparticles remains challenging. In this study, we report the use of a reverse microemulsion system to synthesize well-dispersed and uniform hollow porous silica nanospheres with Pd-NixOy hybrid nanoparticles (NPs) inside their cavities (Pd-NixOy@HPSNs). Poly(ethylene imine) was used as void templates for hollow voids and vehicles to transport Pd and Ni precursors into the central voids. Due to the confinement of nanospaces of the central cavities and proper treatments, Pd and Ni were enforced to form close contact Pd-NixOy heteroaggregate nanoparticles in the cavities. Relative to their monometallic analogues, the synthesized Pd1-(NixOy)1/x@HPSNs exhibit greatly enhanced activity and reusability for 4-nitrophenol reduction by NaBH4, and the enhancement could be attributed to the interaction between Pd and NixOy and the protection of inner NPs by silica shells. ? 2023 American Chemical Society.