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
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.
