异质结
材料科学
热液循环
载流子
光催化
可见光谱
纳米技术
选择性
光电子学
化学工程
化学
生物化学
工程类
催化作用
作者
Xiong Zhang,Jingjun Peng,Yupei Ding,Delun Zheng,Yuejuan Lin,Yaowen Chen,Wenhua Gao
标识
DOI:10.1016/j.snb.2019.127552
摘要
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 [email protected]2 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 [email protected]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 [email protected]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 1×10−10 to 3 × 10-7 mol L-1 with a low detection limit of 7.6 × 10-11 mol L-1. This work demonstrates the marvelous potential of hierarchical hollow [email protected]2 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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