期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 306, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.127552
关键词
MOF-derived ZnCdS@MoS2; Heterostructure; Hierarchical hollow; PEC aptasensor; Lincomycin
资金
- Guangdong Basic and Applied Basic Research Foundation [2019A1515010618]
- Guangdong Special Funds for the Science & Technology Project [190827105555408]
The construction of heterostructures is considered as an effective strategy to facilitate migration of photogenerated carriers and boost the photoelectrochemical (PEC) performances. Herein, a novel hierarchical hollow ZnCdS@MoS2 heterostructured cages derived from metal-organic frameworks (MOFs) were synthesized by solvothermal and hydrothermal methods. The morphology of MoS2 grown on the surface of ZnCdS polyhedral cages could be well-controlled by changing the experimental conditions. Under visible light irradiation, compared with pristine ZnCdS and MoS2, the PEC response of the ZnCdS@MoS 2 was enhanced by 3.1-fold and 47.3-fold, respectively. The enhanced PEC properties were ascribed to the synergy between tailored hierarchical hollow structure and close contact heterojunction interface, which can promote visible-light harvesting, accelerate charge migration, and curb recombination of photogenerated carriers. Benefiting from the remarkable PEC performance of hierarchical hollow ZnCdS@MoS 2 heterostructured cages, a label-free PEC aptasensor platform was constructed for lincomycin detection with excellent selectivity and sensitivity. The developed PEC aptasensor displayed a wide liner response of 1 x 10(-10) to 3 x 10(-7) mol L-1 with a low detection limit of 7.6 x 10(-11) mol L-1. This work demonstrates the marvelous potential of hierarchical hollow ZnCdS@MoS2 heterostructured cages in PEC sensing applications. Most importantly, this work opens an avenue for the design and synthesis of MOF-derived novel heterostructures.
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