Self-powered photoelectrochemical sensing for sensitive detection of chloramphenicol based on sulfur-vacancy engineered MoS 2 nanoribbons/plasmonic Ti 3 C 2 MXene with continual injection of photoinduced electrons
Journal of Environmental Chemical Engineering, ISSN: 2213-3437, Vol: 12, Issue: 2, Page: 112067
2024
- 5Citations
- 4Captures
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Article Description
Accurate detection of antibiotic concentration in a matrix is vital for determining the contamination status. In this study, we have developed an ultrasensitive self-powered photoelectrochemical (PEC) sensor based on MoS 2 /Ti 3 C 2 heterojunction, where sulfur vacancy engineered MoS 2 nanoribbons were first grown in situ onto the plasmonic Ti 3 C 2 MXene via a facile thermal treatment method. With the introduction of nonmetallic plasmonic Ti 3 C 2, the constructed MoS 2 /Ti 3 C 2 heterostructure facilitated the continuous photoelectron injection from MoS 2 to Ti 3 C 2 MXene, resulting in stable surface plasmon resonance (SPR) effect and enhanced photoelectric conversion. Compared to MoS 2 alone, the PEC response of as-prepared MoS 2 /Ti 3 C 2 heterojunction was increased by five times. Due to the excellent PEC properties of the MoS 2 /Ti 3 C 2 heterostructure, a new ultrasensitive PEC aptasensor was fabricated with the assistance of chloramphenicol (CAP) aptamer. The developed aptasensor displayed satisfactory stability over a period of 11 days and high selectivity, a wide linear response range (0.1 nM to 0.01 mM) and a low detection limit (0.034 nM). Therefore, it can be successfully applied to CAP detection in environmental samples. This work provided a signal amplification strategy to fabricate efficient self-powered PEC sensing platforms.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2213343724001970; http://dx.doi.org/10.1016/j.jece.2024.112067; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85184043494&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S2213343724001970; https://dx.doi.org/10.1016/j.jece.2024.112067
Elsevier BV
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