文献类型：期刊文献

中文题名：纳米电缆状催化剂MTe (M=Pt, PtCu)@UIO-67的组装及其催化二氧化碳转化

英文题名：Nanocable catalysts MTe (M = Pt, PtCu)@UIO-67 for CO2 conversion

作者：Zhang, Huaqian[1];Xu, Haitao[1];Li, Yuanyuan[1];Pan, Xinbo[1];Li, Lishuang[1]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Membrane Sci & Engn R&D Lab, Shanghai 200237, Peoples R China

年份：2020

卷号：63

期号：5

起止页码：769

外文期刊名：SCIENCE CHINA-MATERIALS

收录：;EI(收录号：20201108280919);WOS:【SCI-EXPANDED(收录号:WOS:000518302400001)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (21371058).

语种：中文

外文关键词：metal-organic frameworks; nanowires; nanocable catalyst; reverse water-gas shift reaction

摘要：Zr-based metal-organic framework nanocable catalysts comprising MTe(M = Pt, PtCu)@UIO-67 resembling "sugarcoated haws on a stick" were assembled. Ultrathin Te nanowires with diameters of about 8.48 nm served as a sacrificial template for the epitaxial growth of an outer M (Pt or PtCu) to obtain cable cores comprising MTe nanowires with good dispersity, which were then successfully encapsulated in the center of a monodisperse MTe@UIO-67 cable nano-structured catalyst. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), powder X-ray diffraction (XRD) and energy dispersive X-ray (EDX) element mapping were used to investigate the morphology, structure and composition of the nanocable catalysts. Six types of catalysts were synthesized, and all of the catalysts demonstrated superior product selectivity to CO for reverse water-gas shift (RWGS) reaction. Especially, the morphology and dispersion of PtCuTe@UIO-67 nanocable catalyst can be maintained to some extent after catalysis at high temperature, and PtTe@UIO-67 catalyzed CO2 conversion was achieved with 99.86% CO selectivity.