Confined Gold Single Atoms–MXene Heterostructure-Based Electrochemiluminescence Functional Material and Its Sensing Application,Analytical Chemistry

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Confined Gold Single Atoms–MXene Heterostructure-Based Electrochemiluminescence Functional Material and Its Sensing Application
Analytical Chemistry ( IF 6.7 ) Pub Date : 2022-07-28 , DOI: 10.1021/acs.analchem.2c01480
Yixin Nie ₁ , Peilin Wang ₁ , Qiang Ma ₁ , Xingguang Su ₁

Affiliation

Herein, based on electronic metal–support interaction (EMSI), a gold single atom confined MXene (Au_SA/MXene) heterostructure was developed as the highly efficient electrochemiluminescence (ECL) functional material, which greatly improved the electrochemical properties and broadened the sensing application of MXenes. Gold single atoms were confined into the vacancy defects of Ti₃C₂T_x MXene, which could effectively avoid the masking of catalytic active sites. Meanwhile, electron transport could be accelerated with the assistance of titanium dioxide on the MXene nanosheets. Therefore, the Au_SA/MXene heterostructure had high catalytic activity and electrical activity to promote hydrogen peroxide to generate free radicals, which achieved high-efficiency ECL. Eventually, the Au_SA/MXene heterostructure was used to construct a Faraday cage-type ECL sensor with fluid nanoislands to detect miRNA-187 in triple-negative breast cancer tumor tissues.

中文翻译：

受限金单原子-MXene异质结构电化学发光功能材料及其传感应用

在此，基于电子金属-载体相互作用（EMSI），开发了一种金单原子约束MXene（Au _SA /MXene）异质结构作为高效电化学发光（ECL）功能材料，极大地改善了电化学性能，拓宽了传感应用。 MXenes。金单原子被限制在Ti ₃ C ₂ T _x MXene的空位缺陷中，可以有效避免催化活性位点的掩蔽。同时，借助 MXene 纳米片上的二氧化钛可以加速电子传输。因此，金_SA/MXene异质结构具有较高的催化活性和电活性，可促进过氧化氢产生自由基，从而实现高效的ECL。最终，Au _SA /MXene 异质结构被用于构建具有流体纳米岛的法拉第笼型 ECL 传感器，以检测三阴性乳腺癌肿瘤组织中的 miRNA-187。

更新日期：2022-07-28

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