Issue 10, 2015

Self-supported composites of thin Pt–Sn crosslinked nanowires for the highly chemoselective hydrogenation of cinnamaldehyde under ambient conditions

Abstract

Alloying a second metal in a parent metal is an efficient way to improve the catalytic performances of monometallic nanocatalysts, thus the understanding of the alloying effects on the catalytic properties of bimetallic nanocatalysts is of great significance. Herein, we demonstrate the synthesis of self-supported composites of thin (ca. 3.8 nm) Pt–Sn crosslinked nanowires (PtSn/SnO2 CNs) with a Pt : Sn molar ratio of 3–4 : 1 via a one-pot hydrothermal method. The growth mechanism of the CNs consisted of spontaneous hydrolysis and reduction of metal ions in water solution and the subsequent oriented attachment of M(OH)x (M = Pt, Sn) particulate species under reduction by poly(vinylpyrrolidone) during hydrothermal processing. The nature of metal precursors, capping reagents and reduction rate has shown great influences on the shaping of the nanocatalysts into CNs. The PtSn/SnO2 catalyst exhibited 87% selectivity (superior over pure Pt nanoparticles (NPs) and physical mixtures of Pt and SnO2 NPs) under ambient conditions for the hydrogenation of cinnamaldehyde, owing to the formation of a Pt–Sn alloy in the CNs. The PtSn/SnO2 catalyst also showed good recyclability and stability in chemoselectivity for cycle experiments of the catalysts.

Graphical abstract: Self-supported composites of thin Pt–Sn crosslinked nanowires for the highly chemoselective hydrogenation of cinnamaldehyde under ambient conditions

Supplementary files

Article information

Article type
Research Article
Submitted
24 7 2015
Accepted
31 8 2015
First published
31 8 2015

Inorg. Chem. Front., 2015,2, 949-956

Self-supported composites of thin Pt–Sn crosslinked nanowires for the highly chemoselective hydrogenation of cinnamaldehyde under ambient conditions

L. Dai, W. Zhu, M. Lin, Z. Zhang, J. Gu, Y. Wang and Y. Zhang, Inorg. Chem. Front., 2015, 2, 949 DOI: 10.1039/C5QI00129C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements