Biomimetic Synthesis of Ultrafine Mixed-Valence Metal-Organic Framework Nanowires and Their Application in Electrochemiluminescence Sensing
文献类型： 外文期刊
作者： Ma, Xionghui 1 ; Pang, Chaohai 1 ; Li, Shuhuai 1 ; Li, Jianping 4 ; Wang, Mingyue 1 ; Xiong, Yuhao 2 ; Su, Linjing 2 ; Lu 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Anal & Test Ctr, Hainan Prov Key Lab Qual & Safety Trop Fruits & V, Haikou 571101, Hainan, Peoples R China
2.Hezhou Univ, Coll Food & Bioengn, Hezhou 542899, Peoples R China
3.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Zhanjiang 524001, Guangdong, Peoples R China
4.Guilin Univ Technol, Guangxi Key Lab Electrochem & Magnetochem Funct M, Coll Chem & Bioengn, Guilin 541004, Peoples R China
关键词： metal-organic framework; nanowires; biomimetic synthesis; electrochemiluminescence sensor; molecular imprinting
期刊名称：ACS APPLIED MATERIALS & INTERFACES （ 影响因子：9.229； 五年影响因子：9.57 ）
ISSN： 1944-8244
年卷期： 2021 年 13 卷 35 期
页码：
收录情况： SCI
摘要： Metal-organic frameworks (MOFs) prepared via typical procedures tend to exhibit issues like poor water stability and poor conductivity, which hinder their application in electrochemical sensing. Herein, we report a strategy for the preparation of mixed-valence ultrafine one-dimensional Ce-MOF nanowires based on a micelle-assisted biomimetic route and subsequent investigation into their growth mechanism. The prepared mixed-valence Ce-MOF nanowires exhibited a typical size of similar to 50 nm and were found to present good water stability and high conductivity. On this basis, we examined the introduction of these nanowires into the luminol hydrogen peroxide luminescence system and proposed a novel dualroute self-circulating electrochemiluminescence (ECL) catalytic amplification mechanism. Finally, in combination with molecular imprinting, a MOF-based ECL sensor was developed for the detection of trace amounts of imidacloprid in plant-derived foods. This sensor exhibited a linearity of 2-120 nM and a detection limit of 0.34 nM. Thus, we proposed not only a novel route to MOF downsizing but also a facile and robust methodology for the design of a MOF-based molecular imprinting ECL sensor.
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