Journal
CATALYSTS
Volume 7, Issue 2, Pages -Publisher
MDPI AG
DOI: 10.3390/catal7020038
Keywords
gold nanoparticles; gold nanostructures; reduction; cucurbiturils
Categories
Funding
- National Natural Science Foundation of China [21372183]
- Thousand Youth Talents Program, Wuhan Applied Basic Research Programs of China [2015060101010069]
- Open Funds of the State Key Laboratory of Electroanalytical Chemistry [SKLEAC201609]
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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.
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