Flower-like Cu/Ag nanozyme as oxidase-mimic for the colorimetric detection of hydroquinone

IF 5.2 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchemical Journal Pub Date : 2026-04-01 Epub Date: 2026-02-14 DOI:10.1016/j.microc.2026.117382

Yi Liu , Xingxing Ouyang , Hongfen Yang , Dan Yang , Jia Ge , Yu Liu , Ren Cai

引用次数: 0

Abstract

Herein, a novel colorimetric system based on bimetallic copper‑silver (Cu/Ag) nanozymes has developed for hydroquinone determination. The bimetallic Cu/Ag nanozymes possess oxidase-mimic activity and could rapidly oxidize TMB to blue oxTMB. When HQ was added to the sensing system, blue oxTMB was reduced to colorless TMB, causing the absorbance to decrease. The proposed assay exhibited excellent performance for hydroquinone assay with a detection limit of 85 nM. Moreover, this strategy can be used to hydroquinone assay in spiked tap and river water samples with favorable recoveries of 97.4%–106.5%.

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花状铜/银纳米酶作为氧化酶模拟物比色法检测对苯二酚

本文建立了一种基于双金属铜银（Cu/Ag）纳米酶的新型比色系统，用于对苯二酚的测定。双金属Cu/Ag纳米酶具有类似氧化酶的活性，能将TMB快速氧化为蓝氧TMB。当感应系统中加入HQ时，蓝色的TMB被还原为无色的TMB，导致吸光度降低。该方法具有良好的对苯二酚检测性能，检测限为85 nM。该方法可用于自来水和河水中对苯二酚的加标分析，加标回收率为97.4% ~ 106.5%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Microchemical Journal 化学-分析化学

CiteScore

8.70

自引率

8.30%

发文量

1131

审稿时长

1.9 months

期刊介绍： The Microchemical Journal is a peer reviewed journal devoted to all aspects and phases of analytical chemistry and chemical analysis. The Microchemical Journal publishes articles which are at the forefront of modern analytical chemistry and cover innovations in the techniques to the finest possible limits. This includes fundamental aspects, instrumentation, new developments, innovative and novel methods and applications including environmental and clinical field. Traditional classical analytical methods such as spectrophotometry and titrimetry as well as established instrumentation methods such as flame and graphite furnace atomic absorption spectrometry, gas chromatography, and modified glassy or carbon electrode electrochemical methods will be considered, provided they show significant improvements and novelty compared to the established methods.