Visible illumination enhanced nonenzymatic glucose photobiosensor based on TiO 2 nanorods decorated with au nanoparticles

Sin Hui Wang, Shoou-Jinn Chang, Cheng Liang Hsu, Yu Jui Fang

Research output: Contribution to journalArticle

Abstract

A nonenzymatic glucose photobiosensor was developed based on Au-nanoparticle-decorated TiO 2 nanorods (NRs) under visible illumination. Au nanoparticles (NPs) absorbed the visible illumination, resulting in surface plasmon resonance (SPR). The SPR of the Au NPs indicated that there was a strong electric field around them, which promoted the transport of more electrons to the TiO 2 NRs and enhanced the glucose sensing properties. The sensing current under visible illumination was five times higher than in the dark when in 0.1 M NaOH solution at a potential of 0.17 V. Moreover, the Michaelis-Menten constant (K m ) of the Au NPs/TiO 2 NRs/FTO under visible illumination was 0.52 mM, which is much smaller than that reported previously. Moreover, these results indicate that the Au NPs/TiO 2 NRs/FTO under visible illumination feature outstanding properties as a nonenzymatic glucose photobiosensor.

Original languageEnglish
Article number8231189
Pages (from-to)2052-2057
Number of pages6
JournalIEEE Transactions on Biomedical Engineering
Volume65
Issue number9
DOIs
Publication statusPublished - 2018 Jan 1

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering

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