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- Title
Solar-powered detection of organic dyes using nitrogen-doped N-TiO<sub>2</sub>/Ag<sub>2</sub>O nanorod arrays.
- Authors
Wang, Shixuan; Gao, Juan; Wang, Yanfen; Lu, Haowen; Yang, Sen; Zheng, Lingcheng; Li, Yang; He, Gang
- Abstract
Organic pollutant detection has caused widespread concern regarding due to their potential environmental and human health risks. In this work, a nitrogen-doped titanium dioxide/silver oxide (N-TiO2/Ag2O) composite has been designed as a sensitive photoelectrochemical (PEC) monitoring platform of organic dyes. Sensitive determination relies on the outstanding PEC performance of N-TiO2/Ag2O. The improved PEC performance stems from the effective separation of photocarriers and the extended light response range provided by the narrowing bandgap and a p–n junction with N-TiO2/Ag2O. The N-TiO2/Ag2O electrode exhibits a photocurrent density of up to 2.2 mA/cm2, demonstrating three times increase compared with the photocurrent density observed with the pure TiO2 film. The linear detection range for rhodamine B (RhB), methylene blue (MB), and methyl orange (MO) is 0.2 ng/mL to 10 μg/mL with an ultrasensitive detection limit of 0.2 ng/mL without bias voltage. Due to the outstanding photocurrent density and sensitive response to organic pollutants, the N-TiO2/Ag2O PEC sensor provided a promising analytical method to detect environmental organic dyes.
- Subjects
NANORODS; DOPING agents (Chemistry); METHYLENE blue; RHODAMINE B; ORGANIC dyes; SILVER oxide; PERSISTENT pollutants
- Publication
Microchimica Acta, 2024, Vol 191, Issue 6, p1
- ISSN
0026-3672
- Publication type
Article
- DOI
10.1007/s00604-024-06429-7