Issue 21, 2017

In situ bubble template-assisted synthesis of phosphonate-functionalized Rh nanodendrites and their catalytic application

Abstract

The controllable synthesis of branched noble metal nanostructures has attracted significant attention as it provides excellent catalytic activity and durability to these metal nanostructures. In the present study, a facile and effective complexation–reduction strategy was developed for synthesizing Rh nanodendrites with hippocampus tail-like branches (Rh-NDHTs) using N2H4·H2O as a reductant and multiphosphonate molecule with small molecular weight as a complexant and functional agent. During the synthesis, the coordination interaction between multiphosphonate and RhCl3 as well as the hydrazine decomposition reaction (H2NNH2 = N2 + 2H2) catalyzed by the freshly formed Rh nanocrystals play important roles in the generation of Rh-NDHTs. Moreover, phosphonate functionalization of Rh-NDHTs was simultaneously achieved during the course of the synthesis, originating from the strong adsorption of multiphosphonate on the Rh surface. When used as a heterogeneous catalyst for the o-phenylenediamine oxidation reaction, the phosphonate-functionalized Rh-NDHTs exhibited enhanced catalytic efficiency and durability as compared to the commercially available Rh nanocrystals, attributing to their extraordinary morphological and interfacial properties.

Graphical abstract: In situ bubble template-assisted synthesis of phosphonate-functionalized Rh nanodendrites and their catalytic application

Supplementary files

Article information

Article type
Paper
Submitted
30 Mar 2017
Accepted
02 May 2017
First published
04 May 2017

CrystEngComm, 2017,19, 2946-2952

In situ bubble template-assisted synthesis of phosphonate-functionalized Rh nanodendrites and their catalytic application

J. Zhu, F. Li, L. Yao, C. Han, S. Li, J. Zeng, J. Jiang, J. Lee and Y. Chen, CrystEngComm, 2017, 19, 2946 DOI: 10.1039/C7CE00606C

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