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Two-dimensional hybrid mesoporous Fe2O3–graphene nanostructures: A highly active and reusable peroxidase mimetic toward rapid, highly sensitive optical detection of glucose.
- Source :
-
Biosensors & Bioelectronics . Feb2014, Vol. 52, p452-457. 6p. - Publication Year :
- 2014
-
Abstract
- Abstract: In this article, for the first time, two-dimensional hybrid mesoporous Fe2O3–graphene (mFe2O3–G) nanostructures were developed as a peroxidase mimetic with catalytic activities superior to those of mFe2O3, G, and previously reported Fe-based peroxidase mimetics. The high-surface-area mFe2O3 not only offers a large number of catalytically active sites, but also facilitates the diffusion of 3,3,5,5-tetramethylbenzidine (TMB) and H2O2 toward G surface. On the other hand, G is π-rich and thus favors the adsorption and enrichment of TMB within these pores. These synergistic effects lead to highly improved catalytic performances. Based on these findings, a simple, rapid, and highly sensitive and selective optical detector of glucose has been developed and demonstrated in buffer solution with a pretty low detection limit of 0.5μM. In addition, this nanosensor is reusable and can also be used for glucose detection in diluted serum. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09565663
- Volume :
- 52
- Database :
- Academic Search Index
- Journal :
- Biosensors & Bioelectronics
- Publication Type :
- Academic Journal
- Accession number :
- 91739218
- Full Text :
- https://doi.org/10.1016/j.bios.2013.09.029