A Comparison Reduction of 4-Nitrophenol by Gold Nanospheres and Gold NanostarsReportar como inadecuado


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


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The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China





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Academic Editors: Alain Roucoux and Audrey Denicourt

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 cucurbit7uril 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





Autor: Tao Ma, Wenshuo Yang, Simin Liu, Haijun Zhang and Feng Liang *

Fuente: http://mdpi.com/



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