Surface Plasmon-Enhanced Photoelectrochemical Sensor Based on Au Modified TiO<sub>2</sub> Nanotubes

Wanqing Liu; Wei Duan; Liqun Jia; Siyu Wang; Yuan Guo; Guoqing Zhang; Baolin Zhu; Weiping Huang; Shoumin Zhang

doi:10.3390/nano12122058

Nanomaterials (Jun 2022)

Surface Plasmon-Enhanced Photoelectrochemical Sensor Based on Au Modified TiO<sub>2</sub> Nanotubes

Wanqing Liu,
Wei Duan,
Liqun Jia,
Siyu Wang,
Yuan Guo,
Guoqing Zhang,
Baolin Zhu,
Weiping Huang,
Shoumin Zhang

Affiliations

Wanqing Liu: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, China
Wei Duan: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, China
Liqun Jia: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, China
Siyu Wang: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, China
Yuan Guo: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, China
Guoqing Zhang: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, China
Baolin Zhu: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, China
Weiping Huang: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, China
Shoumin Zhang: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, China

DOI: https://doi.org/10.3390/nano12122058
Journal volume & issue: Vol. 12, no. 12
p. 2058

Abstract

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Based on the enhanced charge separation efficiency of the one-dimensional structure and strong surface plasmon resonance (SPR) of gold, a gold modified TiO2 nanotube (Au/TiO2NTs) glucose photoelectrochemical (PEC) sensor was prepared. It could be activated by visible red light (625 nm). Under optimal conditions, the Au/TiO2NTs sensor exhibited a good sensitivity of 170.37 μA·mM−1·cm−2 in the range of 1–90 μM (R2 = 0.9993), and a detection limit of 1.3 μM (S/N = 3). Due to its high selectivity, good anti-interference ability, and long-term stability, the fabricated Au/TiO2NTs sensor provides practical detection of glucose. It is expected to be used in the construction of non-invasive PEC biosensors.

Published in Nanomaterials

ISSN: 2079-4991 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/nanomaterials

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