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Catalysts 2017, 7(2), 38; doi:10.3390/catal7020038

A Comparison Reduction of 4-Nitrophenol by Gold Nanospheres and Gold Nanostars

The State Key Laboratory of Refractories and Metallurgy, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
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Academic Editors: Alain Roucoux and Audrey Denicourt
Received: 12 December 2016 / Revised: 18 January 2017 / Accepted: 19 January 2017 / Published: 24 January 2017
(This article belongs to the Special Issue Soluble Nanoparticles in Catalytic Applications)
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Abstract

In order to investigate structure-property relationships, the catalytic properties of gold nanoparticles were evaluated in the reduction of 4-nitrophenol by NaBH4. Using catalyst suspensions with identical amounts of gold, the following key results were obtained: first, the nanostars showed increased activity as compared to spherical gold nanoparticles; second, larger gold nanostars showed higher activity, likely because of the abundance of flat/spiky features on these particles, which show high metal utilization; third, treatment of the nanostar colloid with cucurbit[7]uril can be used to balance catalyst stability and activity; fourth, as expected from the decreasing surface atom fraction, the specific activity of the spherical nanoparticles decreased with increasing particle size. View Full-Text
Keywords: gold nanoparticles; gold nanostructures; reduction; cucurbiturils gold nanoparticles; gold nanostructures; reduction; cucurbiturils
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Ma, T.; Yang, W.; Liu, S.; Zhang, H.; Liang, F. A Comparison Reduction of 4-Nitrophenol by Gold Nanospheres and Gold Nanostars. Catalysts 2017, 7, 38.

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