Synthesis, characterisation, superoxide dismutase and catalase activities of functionalised silica nanoparticles

Author

Xiaohong Chen ; Wu Jiang ; Qingrong Cheng ; Zhiquan Pan ; Hong Zhou

Author_Institution

Key Lab. for Green Chem. Process of Minist. of Educ., Wuhan Inst. of Technol., Wuhan, China

Volume

9

Issue

3

fYear

2014

fDate

Mar-14

Firstpage

157

Lastpage

161

Abstract

Silica nanoparticles (NPs) modified by imidazole, carboxyl and phenol groups were designed and synthesised. The particles were characterised by Fourier transform infrared spectroscopy, thermogravimetric analysis techniques, scanning electron microscopy and atomic absorption spectroscopy. Studies on superoxide dismutase (SOD) and catalase-like activities of the NPs show that the NPs have both a high catalase-like activity with a 100% conversion rate of H₂O₂ and SOD activity with IC₅₀ = 0.023 mg/ml, exhibiting the activity level of 10 U/ml biological SOD.

Keywords

Fourier transform spectra; atomic absorption spectroscopy; infrared spectra; nanofabrication; nanoparticles; scanning electron microscopy; silicon compounds; thermal analysis; Fourier transform infrared spectroscopy; atomic absorption spectroscopy; carboxyl group; catalase activities; imidazole group; phenol group; scanning electron microscopy; silica nanoparticles; superoxide dismutase; thermogravimetric analysis;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2013.0646

Filename

6778480