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Salt template-assisted in situ construction of Ru nanoclusters and porous carbon: excellent catalysts toward hydrogen evolution, ammonia-borane hydrolysis, and 4-nitrophenol reduction

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Abstract

Sustainable yet effective manufacture of supported metal nanoclusters (NCs) with high performance for catalytic applications is worthwhile but remains a big challenge. Here, we report a salt template-assisted approach through direct calcination of a mixture of ruthenium oleate precursor and sodium sulfate for one-step synthesis of Ru NCs solidly loaded on the simultaneously formed porous carbon (Ru/PC). In this case, both the salt template of sodium sulfate and one-step approach play key roles in forming surface-clean Ru NCs with good dispersion to supply abundant accessible active sites and constructing a three-dimensional architecture to boost the mass and/or electron transport during applications. Taking advantage of these features, Ru/PC as a catalyst shows excellent activities for electrocatalytic hydrogen evolution with an overpotential of 21 mV at 10 mA cm−2 in 1.0 M KOH and ammonia-borane hydrolysis with a high turnover frequency of 744 min−1 and a high activity for 4-nitrophenol reduction with a reaction rate of 1.29 min−1 at room temperature. The catalyst also shows high stability and reusability for the investigated reactions. This study presents a green yet sustainable method to produce supported metal NCs for versatile catalytic applications.

Graphical abstract: Salt template-assisted in situ construction of Ru nanoclusters and porous carbon: excellent catalysts toward hydrogen evolution, ammonia-borane hydrolysis, and 4-nitrophenol reduction

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Article information


Submitted
19 Nov 2019
Accepted
20 Dec 2019
First published
23 Dec 2019

Green Chem., 2020, Advance Article
Article type
Paper

Salt template-assisted in situ construction of Ru nanoclusters and porous carbon: excellent catalysts toward hydrogen evolution, ammonia-borane hydrolysis, and 4-nitrophenol reduction

R. Ding, Q. Chen, Q. Luo, L. Zhou, Y. Wang, Y. Zhang and G. Fan, Green Chem., 2020, Advance Article , DOI: 10.1039/C9GC03986D

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