化学
基质(水族馆)
超分子化学
过氧化物酶
催化作用
Atom(片上系统)
抗坏血酸
气凝胶
组合化学
纳米技术
分子
材料科学
有机化学
酶
海洋学
食品科学
计算机科学
嵌入式系统
地质学
作者
C Ma,Yaping Xu,Lixin Wu,Quan Wang,Jiajia Zheng,Guoxi Ren,Xiaoyu Wang,Xingfa Gao,Ming Zhou,Wang Ming,Hui Wei
标识
DOI:10.1002/ange.202116170
摘要
Abstract We present a facile route towards a dual single‐atom nanozyme composed of Zn and Mo, which utilizes the non‐covalent nano‐assembly of polyoxometalates, supramolecular coordination complexes as the metal‐atom precursor, and a macroscopic amphiphilic aerogel as the supporting substrate. The dual single‐atoms of Zn and Mo have a high content (1.5 and 7.3 wt%, respectively) and exhibit a synergistic effect and a peroxidase‐like activity. The Zn/Mo site was identified as the main active center by X‐ray absorption fine structure spectroscopy and density functional theory calculation. The detection of versatile analytes, including intracellular H 2 O 2 , glucose in serum, cholesterol, and ascorbic acid in commercial beverages was achieved. The nanozyme has an outstanding stability and maintained its performance after one year's storage. This study develops a new peroxidase‐like nanozyme and provides a robust synthetic strategy for single‐atom catalysts by utilizing an aerogel as a facile substrate that is capable of stabilizing various metal atoms.
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