College of Chemistry and Chemical Engineering, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong, 637000, China.
College of Chemistry and Chemical Engineering, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong, 637000, China.
Biosens Bioelectron. 2022 Aug 15;210:114294. doi: 10.1016/j.bios.2022.114294. Epub 2022 Apr 19.
Single-atom catalysts with atomically dispersed M-Nx active sites have been widely used as nanozymes for colorimetric sensing due to their similar structure to natural enzymes, but they are still limited by their biological activity. Herein, controllable synthesis of B-doped Zn-N-C (ZnBNC) single-atom nanozymes (SAzymes) was designed and realized for the first time as a potent peroxidase mimetic. Based on the peroxidase-like activity of ZnBNC SAzymes, a novel colorimetric method was developed for the highly sensitive and selective detection of p-phenylenediamine (PPD) with a wide response range (0.3-10 μM) and a low detection limit (0.1 μM), which can be used as an alternative method for the detection of PPD in hair dyes and dyed hair samples.
单原子催化剂具有原子分散的 M-Nx 活性位点，由于其结构类似于天然酶，因此被广泛用作比色传感的纳米酶，但它们仍然受到生物活性的限制。本文首次设计并实现了可控合成 B 掺杂的 Zn-N-C（ZnBNC）单原子纳米酶（SAzymes），作为一种有效的过氧化物酶模拟物。基于 ZnBNC SAzymes 的过氧化物酶样活性，开发了一种新颖的比色法，用于高灵敏度和选择性检测对苯二胺（PPD），其响应范围宽（0.3-10 μM），检测限低（0.1 μM），可作为染发剂和染发样品中 PPD 检测的替代方法。
