Metal-organic framework composite Mn/Fe-MOF@Pd with peroxidase-like activities for sensitive colorimetric detection of hydroquinone

IF 5.7 2区化学 Q1 CHEMISTRY, ANALYTICAL

Analytica Chimica Acta Pub Date : 2023-10-23 DOI:10.1016/j.aca.2023.341797

Die Deng , Ya Wang , Shaohua Wen , Yujie Kang , Xiaoyan Cui , Rong Tang , Xiupei Yang

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Abstract

The construction of highly sensitive detection methods for hydroquinone (HQ) in environment and cosmetics is of great significance for environmental protection and human health. In this work, a novel detection method for HQ was successfully developed by constructing a metal-organic framework mimic enzyme colorimetric sensor (Mn/Fe-MOF@Pd_1.0) with excellent peroxidase-like activity, which was synthesized by doping manganese ions into Fe-MOF by introducing bimetallic active centers, thereby improving the peroxidase-like activity of Fe-MOF, and the acid resistance and stability of Mn/Fe-MOF were improved by supporting palladium (Pd NPs). It is proven that Mn/Fe-MOF@Pd_1.0 promoted the decomposition of hydrogen peroxide (H₂O₂) to generate active species, therefore, oxidized chromogenic substrate discoloration. On this basis, the detection of HQ based on the Mn/Fe-MOF@Pd_1.0 colorimetric sensor was constructed, in which the limit of detection (LOD) was 0.09 μM in the linear range of 0.3–30 μM. Furthermore, Mn/Fe-MOF@Pd_1.0 was successfully used for detecting HQ in hydroquinone whitening cream and actual water samples. The successful synthesis of Mn/Fe-MOF@Pd_1.0 may provide new insights for further study of the enzyme-like activity of metal-organic framework composites, and the constructed facile and sensitive sensor system could broaden the application prospects of HQ detection.

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具有过氧化物酶样活性的金属-有机骨架复合材料Mn/Fe-MOF@Pd用于对苯二酚的灵敏比色检测

环境和化妆品中对苯二酚(HQ)高灵敏度检测方法的建立对环境保护和人类健康具有重要意义。本文通过构建具有优异过氧化物酶样活性的金属-有机框架模拟酶比色传感器(Mn/Fe-MOF@Pd1.0)，成功开发了一种新的检测HQ的方法。该传感器通过引入双金属活性中心，在Fe-MOF中掺杂锰离子，从而提高了Fe-MOF的过氧化物酶样活性，并通过负载钯(Pd NPs)提高了Mn/Fe-MOF的耐酸性和稳定性。实验证明Mn/Fe-MOF@Pd1.0促进过氧化氢(H2O2)分解生成活性物质，从而氧化显色底物变色。在此基础上，构建了基于Mn/Fe-MOF@Pd1.0比色传感器的HQ检测方法，在0.3 ~ 30 μM的线性范围内，检测限为0.09 μM。此外，Mn/Fe-MOF@Pd1.0成功地用于对苯二酚美白乳膏和实际水样中的HQ检测。Mn/Fe-MOF@Pd1.0的成功合成为进一步研究金属-有机骨架复合材料的类酶活性提供了新的思路，构建的灵敏灵敏的传感系统可拓宽HQ检测的应用前景。

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来源期刊

Analytica Chimica Acta 化学-分析化学

CiteScore

10.40

自引率

6.50%

发文量

1081

审稿时长

38 days

期刊介绍： Analytica Chimica Acta has an open access mirror journal Analytica Chimica Acta: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Analytica Chimica Acta provides a forum for the rapid publication of original research, and critical, comprehensive reviews dealing with all aspects of fundamental and applied modern analytical chemistry. The journal welcomes the submission of research papers which report studies concerning the development of new and significant analytical methodologies. In determining the suitability of submitted articles for publication, particular scrutiny will be placed on the degree of novelty and impact of the research and the extent to which it adds to the existing body of knowledge in analytical chemistry.