Utilization of gold nanoparticles-bismuth vanadate photocatalyst-based photoelectrochemical sensor for caffeine detection in biological samples of athletes: A sporting perspective
This study presents a photo sensor for caffeine (CA) detection, employing gold nanoparticles (Au NPs) immobilized on bismuth vanadate on indium tin oxide substrate (Au-BiVO4/ITO). The characterization of the Au-BiVO4/ITO electrode was investigated by surface analysis, crystallography and electrochem...
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Elsevier
2025-01-01
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| Series: | Alexandria Engineering Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110016824011517 |
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| author | Xiangkun Li Zhenhua Guo |
| author_facet | Xiangkun Li Zhenhua Guo |
| author_sort | Xiangkun Li |
| collection | DOAJ |
| description | This study presents a photo sensor for caffeine (CA) detection, employing gold nanoparticles (Au NPs) immobilized on bismuth vanadate on indium tin oxide substrate (Au-BiVO4/ITO). The characterization of the Au-BiVO4/ITO electrode was investigated by surface analysis, crystallography and electrochemical methods. The incorporation of Au NPs into the BiVO4 structure has significantly increased the photocatalytic performance of the material, especially its photocurrent response. This modification has increased the photocurrent from the initial value of 200 µA to more than 300 µA. The Au-BiVO4/ITO PEC sensor demonstrated enhanced photocurrent responses to CA under visible light, compared to BiVO4/ITO. Under optimized conditions, the PEC sensor showed a linear correlation between analytical signal and CA concentration from 0.3 to 270 μM, with obtained detection limit of 0.08 μM. Using the standard addition way, it measured CA in serum and urine samples from athletes, achieving average recovery rates of 99.4 % in serum and 97.8 % in urine, which indicates high accuracy. Moreover, the results showing strong agreement with standard HPLC analysis and demonstrating high recovery efficiency. Furthermore, the sensor demonstrated excellent performance with acceptable figure of merit for CA measurement, making it suitable for reliable analytical applications in biological samples. |
| format | Article |
| id | doaj-art-3ee8821c8bfe4ab3a4770f2132942758 |
| institution | Kabale University |
| issn | 1110-0168 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Alexandria Engineering Journal |
| spelling | doaj-art-3ee8821c8bfe4ab3a4770f21329427582025-01-09T06:13:21ZengElsevierAlexandria Engineering Journal1110-01682025-01-01110420428Utilization of gold nanoparticles-bismuth vanadate photocatalyst-based photoelectrochemical sensor for caffeine detection in biological samples of athletes: A sporting perspectiveXiangkun Li0Zhenhua Guo1College of Physical Science, Jishou University, Jishou, Hunan 416000, ChinaCorresponding author.; College of Physical Science, Jishou University, Jishou, Hunan 416000, ChinaThis study presents a photo sensor for caffeine (CA) detection, employing gold nanoparticles (Au NPs) immobilized on bismuth vanadate on indium tin oxide substrate (Au-BiVO4/ITO). The characterization of the Au-BiVO4/ITO electrode was investigated by surface analysis, crystallography and electrochemical methods. The incorporation of Au NPs into the BiVO4 structure has significantly increased the photocatalytic performance of the material, especially its photocurrent response. This modification has increased the photocurrent from the initial value of 200 µA to more than 300 µA. The Au-BiVO4/ITO PEC sensor demonstrated enhanced photocurrent responses to CA under visible light, compared to BiVO4/ITO. Under optimized conditions, the PEC sensor showed a linear correlation between analytical signal and CA concentration from 0.3 to 270 μM, with obtained detection limit of 0.08 μM. Using the standard addition way, it measured CA in serum and urine samples from athletes, achieving average recovery rates of 99.4 % in serum and 97.8 % in urine, which indicates high accuracy. Moreover, the results showing strong agreement with standard HPLC analysis and demonstrating high recovery efficiency. Furthermore, the sensor demonstrated excellent performance with acceptable figure of merit for CA measurement, making it suitable for reliable analytical applications in biological samples.http://www.sciencedirect.com/science/article/pii/S1110016824011517Au NPsBiVO4CaffeineITO electrodePhoto-electrochemical sensorSport |
| spellingShingle | Xiangkun Li Zhenhua Guo Utilization of gold nanoparticles-bismuth vanadate photocatalyst-based photoelectrochemical sensor for caffeine detection in biological samples of athletes: A sporting perspective Alexandria Engineering Journal Au NPs BiVO4 Caffeine ITO electrode Photo-electrochemical sensor Sport |
| title | Utilization of gold nanoparticles-bismuth vanadate photocatalyst-based photoelectrochemical sensor for caffeine detection in biological samples of athletes: A sporting perspective |
| title_full | Utilization of gold nanoparticles-bismuth vanadate photocatalyst-based photoelectrochemical sensor for caffeine detection in biological samples of athletes: A sporting perspective |
| title_fullStr | Utilization of gold nanoparticles-bismuth vanadate photocatalyst-based photoelectrochemical sensor for caffeine detection in biological samples of athletes: A sporting perspective |
| title_full_unstemmed | Utilization of gold nanoparticles-bismuth vanadate photocatalyst-based photoelectrochemical sensor for caffeine detection in biological samples of athletes: A sporting perspective |
| title_short | Utilization of gold nanoparticles-bismuth vanadate photocatalyst-based photoelectrochemical sensor for caffeine detection in biological samples of athletes: A sporting perspective |
| title_sort | utilization of gold nanoparticles bismuth vanadate photocatalyst based photoelectrochemical sensor for caffeine detection in biological samples of athletes a sporting perspective |
| topic | Au NPs BiVO4 Caffeine ITO electrode Photo-electrochemical sensor Sport |
| url | http://www.sciencedirect.com/science/article/pii/S1110016824011517 |
| work_keys_str_mv | AT xiangkunli utilizationofgoldnanoparticlesbismuthvanadatephotocatalystbasedphotoelectrochemicalsensorforcaffeinedetectioninbiologicalsamplesofathletesasportingperspective AT zhenhuaguo utilizationofgoldnanoparticlesbismuthvanadatephotocatalystbasedphotoelectrochemicalsensorforcaffeinedetectioninbiologicalsamplesofathletesasportingperspective |