Fast and Simple Au3+ Colorimetric Detection Using AgNPs and Investigating Its Reaction Mechanism

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-01 DOI:10.22146/ijc.84446

Faathir Al Faath Rachmawati, B. Rusdiarso, E. S. Kunarti

{"title":"Fast and Simple Au3+ Colorimetric Detection Using AgNPs and Investigating Its Reaction Mechanism","authors":"Faathir Al Faath Rachmawati, B. Rusdiarso, E. S. Kunarti","doi":"10.22146/ijc.84446","DOIUrl":null,"url":null,"abstract":"One of the precious metals that has numerous applications is gold. Although it is non-toxic and biocompatible, the oxidized form, Au3+, is toxic and can cause damage to human organs. Detection of Au3+ becomes a necessary and interesting topic to be conducted. Colorimetric analysis using metal nanoparticles such as silver nanoparticles (AgNPs) can analyze metal ions more simply, sensitively, and selectively than traditional methods. In this research, AgNPs were synthesized using polyvinyl alcohol (PVA) and ascorbic acid as stabilizers and reducing agents. The interaction between Au3+ and AgNPs selectively decreased the absorbance intensity of AgNPs and altered the color of colloidal AgNPs from yellow to colorless. These two phenomena indicated a redox reaction between Au3+ and AgNPs, leading to the decomposition of AgNPs. The decomposition of AgNPs (the proposed mechanism) was confirmed by TEM images and UV-vis spectra. The decrease in AgNPs’ absorbance intensity correlated linearly with the increase in added Au3+ concentration. The calibration curve of ∆A versus Au3+ ion concentration yielded LOD and LOQ of 0.404 and 1.347 μg/mL, respectively.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":"35 20","pages":""},"PeriodicalIF":16.4000,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22146/ijc.84446","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

One of the precious metals that has numerous applications is gold. Although it is non-toxic and biocompatible, the oxidized form, Au3+, is toxic and can cause damage to human organs. Detection of Au3+ becomes a necessary and interesting topic to be conducted. Colorimetric analysis using metal nanoparticles such as silver nanoparticles (AgNPs) can analyze metal ions more simply, sensitively, and selectively than traditional methods. In this research, AgNPs were synthesized using polyvinyl alcohol (PVA) and ascorbic acid as stabilizers and reducing agents. The interaction between Au3+ and AgNPs selectively decreased the absorbance intensity of AgNPs and altered the color of colloidal AgNPs from yellow to colorless. These two phenomena indicated a redox reaction between Au3+ and AgNPs, leading to the decomposition of AgNPs. The decomposition of AgNPs (the proposed mechanism) was confirmed by TEM images and UV-vis spectra. The decrease in AgNPs’ absorbance intensity correlated linearly with the increase in added Au3+ concentration. The calibration curve of ∆A versus Au3+ ion concentration yielded LOD and LOQ of 0.404 and 1.347 μg/mL, respectively.

查看原文本刊更多论文

利用 AgNPs 进行快速简便的 Au3+ 比色检测并研究其反应机制

金是应用广泛的贵金属之一。虽然金无毒且具有生物相容性，但其氧化形式 Au3+ 却具有毒性，会对人体器官造成损害。因此，检测 Au3+ 成为一个必要且有趣的课题。与传统方法相比，使用金属纳米粒子（如银纳米粒子（AgNPs））进行比色分析可以更简单、更灵敏、更有选择性地分析金属离子。本研究使用聚乙烯醇（PVA）和抗坏血酸作为稳定剂和还原剂合成了 AgNPs。Au3+ 与 AgNPs 之间的相互作用选择性地降低了 AgNPs 的吸光强度，并使胶体 AgNPs 的颜色从黄色变为无色。这两种现象表明 Au3+ 与 AgNPs 之间发生了氧化还原反应，导致 AgNPs 分解。AgNPs 的分解（所提出的机理）得到了 TEM 图像和紫外-可见光谱的证实。AgNPs 吸光度的降低与添加的 Au3+ 浓度的增加呈线性关系。根据 ∆A 与 Au3+ 离子浓度的校准曲线，LOD 和 LOQ 分别为 0.404 和 1.347 μg/mL。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.