An optical fiber integrated optoelectrode for the photoelectrochemical detection
| Autor: | Jianzhong Zhang, Zhihai Liu, Pingping Teng, Mark Bowkett, Jun Yang, Libo Yuan, Yu Zhang, Kang Li, Xiaoliang Zhu, Nigel Copner, Xingyue Wen, Danheng Gao |
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| Rok vydání: | 2022 |
| Předmět: |
Detection limit
Optical fiber Materials science business.industry Electrochemistry Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Microelectrode Optics Linear range Fiber optic sensor law Photocatalysis Optoelectronics Electrical and Electronic Engineering Physical and Theoretical Chemistry business Transparent conducting film |
| Zdroj: | Optics Communications. 502:127436 |
| ISSN: | 0030-4018 |
| Popis: | A novel optical fiber integrated optoelectrode was proposed and miniatured photoelectrochemical (PEC) sensor was realized. In the structure, transparent conductive oxide indium-tin-oxide (ITO) film and photocatalytic material are coated outside of one end of the optical fiber. This tiny optoelectrode first simultaneously realizes the light-guiding ability and the microelectrode function of electroanalysis. Specifically, the detection of trace nitrite is realized by PEC process of the optical fiber/ITO/BiOI optoelectrode. The integrated optoelectrode shows remarkable electrochemical performance, and the sensor has notable PEC detection ability. At the optimal photosensitizer concentration, the optoelectrode sensor has a linear range of 1 nM–1 μ M and a low detection limit of 5 × 10−10 M for the nitrite sensing. Due to the advantages of integration, fast detection, high sensitivity, and simple operation, the proposed optoelectrode has great potentials in a variety of fields, such as all-fiber integrated devices and various biochemical microanalyses systems. |
| Databáze: | OpenAIRE |
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