Surface Plasmon-Enhanced Photoelectrochemical Sensor Based on Au Modified TiO2 Nanotubes

Surface Plasmon-Enhanced Photoelectrochemical Sensor Based on Au Modified TiO2 Nanotubes

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 optima...

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Veröffentlicht in:Nanomaterials (Basel, Switzerland) Switzerland), 2022-06, Vol.12 (12), p.2058
Hauptverfasser: Liu, Wanqing, Duan, Wei, Jia, Liqun, Wang, Siyu, Guo, Yuan, Zhang, Guoqing, Zhu, Baolin, Huang, Weiping, Zhang, Shoumin
Format: Artikel
Sprache:eng
Schlagworte:
Acids
Au nanoparticles
Biocompatibility
Biosensors
Charge efficiency
Diabetes
Efficiency
Ethanol
Glucose
glucose PEC sensor
Gold
Morphology
Nanoparticles
Nanotechnology
Nanotubes
Selectivity
Semiconductors
Sensors
SPR effect
Surface plasmon resonance
TiO2 nanotubes
Titanium
Titanium dioxide
visible red light
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Zusammenfassung: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.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano12122058