Isolating contiguous Pt atoms and forming Pt-Zn intermetallic nanoparticles to regulate selectivity in 4-nitrophenylacetylene hydrogenation

• DOI: 10.1038/s41467-019-11794-6
• Publication Date: 2019-08-22T10:02:39Z
• Authors: Aijuan Han; Jian Zhang; Wenming Sun; Wenxing Chen; Shaolong Zhang; Yunhu Han; Quanchen Feng; Lirong Zheng; Lin Gu; Chen Chen; Qing Peng; Dingsheng Wang; Yadong Li
• Keywords: Science; Q; 02 engineering and technology; 0210 nano-technology; Article

Abstract Noble metals play a momentous role in heterogeneous catalysis but still face huge challenge selectivity control. Herein, we report isolating contiguous Pt atoms and forming Pt-Zn intermetallic nanoparticles as an effective strategy to optimize the of catalysts. Contiguous are isolated into single formed which supported on hollow nitrogen-doped carbon nanotubes (PtZn/HNCNT), confirmed by aberration-corrected high-resolution transmission electron microscopy X-ray absorption spectrometry measurements. Interestingly, this PtZn/HNCNT catalyst promotes hydrogenation 4-nitrophenylacetylene 4-aminophenylacetylene with much higher conversion ( > 99%) (99%) than comparison samples isolated-single-atomic-sites (Pt/HNCNT) (Pt/CN). Further density functional theory (DFT) calculations disclose that positive Zn assist adsorption nitro group facilitate kinetically.