文献类型：期刊文献

英文题名：Spherical Sandwich Au@Pd@UIO-67/Pt@UIO-n (n=66, 67, 69) Core-Shell Catalysts: Zr-Based Metal-Organic Frameworks for Effectively Regulating the Reverse Water-Gas Shift Reaction

作者：Xu, Haitao[1];Luo, Xikuo[1];Wang, Jiajia[1];Su, Yuqun[1];Zhao, Xi[1];Li, Yansong[1]

机构：[1]ECUST, State Key Lab Chem Engn, Membrane Sci & Engn R&D Lab, Chem Engn Res Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2019

卷号：11

期号：22

起止页码：20291

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20192407024406);WOS:【SCI-EXPANDED(收录号:WOS:000470938500070)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (no. 21371058). We thank Prof. Rong Huang and Prof. Ruijuan Qi from the Key Laboratory of Polar Materials and Devices, Ministry of Education, East China Normal University for HAADF-STEM measurements.

语种：英文

外文关键词：spherical sandwich; Zr-based MOFs; noble-metal NPs; core shell catalyst; RWGS

摘要：In this study, spherical sandwich AupPd@UIO-67/Pt@ UIO-n (n = 66, 67, 69) core shell catalysts were assembled. Au nanoparticles (NPs) were used as the core for the epitaxial growth of Pd shells, and AupPd core shell NPs were successfully encapsulated in the center of monodispersed Au@Pd@UIO-67 nanospheres. Pt NPs were fully fixed onto the nanosphere surfaces to obtain Au@Pd@UIO-67/Pt composites; further coating with UIO-n led to Au@PdpUI0-67/Pt@ UIO-n, in which Pt NPs are sandwiched between the AupPdpUIO-67 core and the UIO-n shell. The Au@Pd core shell NPs efficiently controlled the morphology and structure of UIO-67 and enhanced the CO selectivity of the catalyst. Pt NPs increased the CO, conversion, and the UIO-n component effectively regulated the reverse water gas shift reaction.