期刊
JOURNAL OF MATERIALS CHEMISTRY B
卷 6, 期 11, 页码 1600-1604出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tb00310f
关键词
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资金
- Department of Atomic Energy (DAE), Government of India
Mimicking enzymatic activity is a challenging task. Herein we report dendritic fibrous nano-silica (DFNS) supported gold (Au) nanoparticles (DFNS/Au) as a peroxidase like artificial enzyme. It showed a superior enzymatic activity in 3,5,3,5-tetramethylbenzidine (TMB) oxidation chosen as a model reaction, significantly higher than natural horseradish peroxidase (HRP) enzyme as well as other reported nanomaterial based artificial enzymes. A solvent dependent selectivity towards a two-electron oxidation product, TMB-diamine, has also been observed. This study clearly indicates the vital role of the fibrous morphology and unique silica channels of DFNS in the enhancement of the enzymatic activity.
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