Issue 11, 2018
From the journal:

Journal of Materials Chemistry B

Dendritic fibrous nano-silica supported gold nanoparticles as an artificial enzyme†

Rustam Singh,a   Rajesh Belgamwar,a   Mahak Dhimana  and  Vivek Polshettiwar ORCID logo *a  

* Corresponding authors

a Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Mumbai, India
E-mail: vivekpol@tifr.res.in

Abstract

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.

Graphical abstract: Dendritic fibrous nano-silica supported gold nanoparticles as an artificial enzyme

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Article information

DOI
https://doi.org/10.1039/C8TB00310F
Article type
Communication
Submitted
01 Feb 2018
Accepted
19 Feb 2018
First published
19 Feb 2018

J. Mater. Chem. B, 2018,6, 1600-1604

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Dendritic fibrous nano-silica supported gold nanoparticles as an artificial enzyme

R. Singh, R. Belgamwar, M. Dhiman and V. Polshettiwar, J. Mater. Chem. B, 2018, 6, 1600 DOI: 10.1039/C8TB00310F

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