Silver-based bimetallic nanozyme fabrics with peroxidase-mimic activity for urinary glucose detection

IF 3.8 2区化学 Q1 BIOCHEMICAL RESEARCH METHODS Analytical and Bioanalytical Chemistry Pub Date : 2024-08-17 DOI:10.1007/s00216-024-05483-7

Sanjana Naveen Prasad, Sanje Mahasivam, Rajesh Ramanathan, Vipul Bansal

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Abstract

The enhanced catalytic properties of bimetallic nanoparticles have been extensively investigated. In this study, bimetallic Ag-M (M = Au, Pt, or Pd) cotton fabrics were fabricated using a combination of electroless deposition and galvanic replacement reactions, and improvement in their peroxidase-mimicking catalytic activity compared to that of the parent Ag fabric was studied. The Ag-Pt bimetallic nanozyme fabric, which showed the highest catalytic activity and ability to simultaneously generate hydroxyl (•OH) and superoxide (O₂^•−) radicals, was assessed as a urine glucose sensor. This nanozyme fabric sensor could directly detect urinary glucose in the pathophysiologically relevant high millimolar range without requiring sample predilution. The sensor could achieve performance on par with that of the current clinical gold standard assay. These features of the Ag-Pt nanozyme sensor, particularly its ability to avoid interference effects from complex urinary matrices, position it as a viable candidate for point-of-care urinary glucose monitoring.

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具有过氧化物酶模拟活性的银基双金属纳米酶织物用于尿糖检测。

双金属纳米粒子的催化性能得到了广泛的研究。本研究采用无电镀沉积和电镀置换反应相结合的方法，制备了双金属 Ag-M（M = Au、Pt 或 Pd）棉织物，并研究了与母体 Ag 织物相比，其过氧化物酶模拟催化活性的改善情况。银铂双金属纳米酶织物显示出最高的催化活性和同时产生羟基（-OH）和超氧（O2--）自由基的能力，被评估为尿糖传感器。这种纳米酶织物传感器可直接检测病理生理相关的高毫摩尔范围内的尿糖，而无需对样品进行预稀释。该传感器的性能可与目前的临床金标准检测法媲美。银铂纳米酶传感器的这些特点，特别是其避免复杂尿液基质干扰效应的能力，使其成为护理点尿糖监测的可行候选方案。

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来源期刊

Analytical and Bioanalytical Chemistry 化学-分析化学

CiteScore

8.00

自引率

4.70%

发文量

638

审稿时长

2.1 months

期刊介绍： Analytical and Bioanalytical Chemistry’s mission is the rapid publication of excellent and high-impact research articles on fundamental and applied topics of analytical and bioanalytical measurement science. Its scope is broad, and ranges from novel measurement platforms and their characterization to multidisciplinary approaches that effectively address important scientific problems. The Editors encourage submissions presenting innovative analytical research in concept, instrumentation, methods, and/or applications, including: mass spectrometry, spectroscopy, and electroanalysis; advanced separations; analytical strategies in “-omics” and imaging, bioanalysis, and sampling; miniaturized devices, medical diagnostics, sensors; analytical characterization of nano- and biomaterials; chemometrics and advanced data analysis.