A Top-Down Strategy to Realize Surface Reconstruction of Small-Sized Platinum-Based Nanoparticles for Selective Hydrogenation

Yu Jin; Pengtang Wang; Xinnan Mao; Shangheng Liu; Leigang Li; Lu Wang; Qi Shao; Yong Xu; Xiaoqing Huang

doi:10.1002/anie.202106459

A Top-Down Strategy to Realize Surface Reconstruction of Small-Sized Platinum-Based Nanoparticles for Selective Hydrogenation

Angew Chem Int Ed Engl. 2021 Aug 2;60(32):17430-17434. doi: 10.1002/anie.202106459. Epub 2021 Jul 1.

Authors

Yu Jin¹, Pengtang Wang^{1

2}, Xinnan Mao^{3

4}, Shangheng Liu^{1

2}, Leigang Li^{1

2}, Lu Wang³, Qi Shao¹, Yong Xu⁴, Xiaoqing Huang^{1

2}

Affiliations

¹ College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, Jiangsu, China.
² State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
³ Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, China.
⁴ Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy, Guangdong University of Technology, 510006, Guangzhou, Guangdong, China.

PMID: 34050593
DOI: 10.1002/anie.202106459

Abstract

Over the past decades, despite the substantial efforts that have been devoted to the modifications of Pt nanoparticles (NPs) to tailor their selectivities for hydrogenation reactions, there are still a lack of facile strategies for precisely regulation of the surface properties of NPs, especially for those with small sizes. In this work, we propose a top-down thermal annealing strategy for tuning the surface properties of Pt-based NPs (≈4 nm) without the occurrence of aggregation. Compared to conventional bottom-up methods, the present top-down strategy can precisely regulate the surface compositions of Pt-Cd NPs and other ternary Pt-Cd-M NPs (M=Fe, Ni, Co, Mn, and Sn). The optimized Pt-Cd NPs exhibit excellent selectivity toward phenylacetylene and 4-nitrostyrene hydrogenations with a styrene selectivity and 4-aminophenyl styrene selectivity of 95.2 % and 94.5 %, respectively. This work provides a general strategy for the surface reconstructions of Pt-based NPs, and promotes fundamental research on catalyst design for heterogeneous catalysis.

Keywords: cadmium; hydrogenation; platinum; surface reconstruction; top-down strategy.