电化学
材料科学
检出限
锌
金属有机骨架
水溶液
硫化镉
选择性
水溶液中的金属离子
光催化
纳米晶材料
纳米技术
化学工程
金属
化学
电极
色谱法
有机化学
催化作用
物理化学
吸附
冶金
工程类
作者
Zhaohong Su,Daili Tang,Xiaolan Yang,Yang Peng,Birui Wang,Xiangyu Li,Jiahao Chen,Yue Hu,Xiaoli Qin
标识
DOI:10.1016/j.microc.2021.107038
摘要
The integration of cadmium sulfide (CdS) and metal organic frameworks (MOFs) has shown promise in applications such as photocatalysis and sensing. Herein, a sensitive electrochemical immunosensor based on a room temperature, simple and fast aqueous synthetic strategy of in-situ selective growth nanocystalline CdS on zinc metal organic framework ([email protected]) is reported. We investigated the possibility of growth CdS on various MOFs, synthesizing by electrosynthesis or solution phase syntheses with different metal ions (e.g. Zn2+, Cu2+, Fe3+, Co2+, Zr4+) and organic ligands (e.g. 1,3,5-benzenetricarboxylic acid, 2-methylimidazole, 1,4-benzenedicarboxylic acid, 2-aminoterephthalic acid). This simple experiment process proved that CdS nanocrystalline can selectively grow on varied structures Zn-MOFs with different organic ligands. The synthesis, characterization and mechanisms involved in the formation of this composite material was explored carefully and thoroughly. The unique properties of this composite presented a promising photoelectrochemical and electrochemical applications. Therefore, a sensitive Zn-MOF-labeled amperometric immunosensor based on this strategy for the detection of foot-and-mouth disease virus (FMDV) was developed. The logarithm FMDV concentration was range from 0.5 fg mL−1 to 5 ng mL−1 with a low detection limit of 0.05 fg mL−1. Moreover, this proposed sensor with good selectivity, acceptable reproducibility, and stability was successfully applied to detect FMDV in actual blood sample. Furthermore, this method of growth the CdS nanocrystalline in situ on a Zn-MOF device structure or platform also provides a new horizon for future optoelectronic applications.
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