A molecularly imprinted photoelectrochemical sensor based on the use of Bi2S3 for sensitive determination of dioctyl phthalate
- 238 Downloads
A molecularly imprinted polymer photoelectrochemical (MIP-PEC) sensor based on bismuth sulfide (Bi2S3) is described for the determination of the plasticizer dioctyl phthalate (DOP). Bi2S3 was used as the photoelectrical converter of the sensor, and visible light was utilized as the excitation source. The molecular imprinting film was prepared through the electropolymerization of monomers in the presence of DOP. Under optimal experimental conditions, the photoelectrochemical response was linearly proportional to the logarithm of the DOP concentration in the 0.5–70 pM DOP concentration range, and the detection limit was 0.1 pM. The method is highly stable and reproducible. It was applied to the determination of DOP in spiked water samples.
KeywordsPhotoelectrochemical sensor Molecular imprinted Dioctyl phthalate Bismuth sulfide Nanoparticle Current-time method
The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Project No. 21765006), the Natural Science Foundation of Guangxi Province of China (Project No. 2015GXNSFFA139005, 2018GXNSFAA138145), and Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection.
Compliance with ethical standards
Conflict of interest
There are no conflicts to declare.
- 5.Li CY, Ma XG, Zhang XJ, Wang R, Chen Y, Li ZY (2016) Magnetic molecularly imprinted polymer nanoparticles-based solid-phase extraction coupled with gas chromatography–mass spectrometry for selective determination of trace di-(2-ethylhexyl) phthalate in water samples. Anal Bioanal Chem 408:7857–7864CrossRefGoogle Scholar
- 25.Liu Q, Huan J, Hao N, Qian J, Mao HP, Wang K (2017) Engineering of heterojunction-mediated biointerface for Photoelectrochemical Aptasensing: a case of direct Z-scheme CdTe-Bi2S3 heterojunction with improved visible-light-driven photo-electrical conversion efficiency. ACS Appl Mater Interfaces 9:18369–18376CrossRefGoogle Scholar
- 34.Fan T, Yang WM, Wang NW, Ni XN, Wen J, Xu WZ (2016) Molecularly imprinted polymer microspheres derived from Pickering emulsions polymerization in determination of di(2-ethylhexyl) phthalate in bottled water samples. J Appl Polym Sci 133:43484–43496Google Scholar