4-Mercaptobenzoic acid-modified Au@Ag nanoparticle-based colorimetric Cr3+ ions detection in aqueous solution

IF 2.5 4区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Analytical Science and Technology Pub Date : 2023-09-21 DOI:10.1186/s40543-023-00386-1

Zhikun Zhang, Heng Li, Dongan Guo, Cuixia Hu, Yumin Liu

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引用次数: 0

Abstract

Abstract Heavy metal ions pose a threat to both ecological balance and human health owing to the non-biodegradable and poisonous characteristics. A simple, convenient and rapid metal ion monitoring plays a significant role for eliminating metal ions pollution. In this work, we prepared 4-mercaptobenzoic acids (4-MBA)-functionalized silver-coated gold nanoparticles (Au@Ag NPs) as colorimetric probes to construct colorimetric Chromium III (Cr 3+ ) ions detection platform. The results showed that 4-MBA-Au@Ag NPs could effectively coordinate with the low-concentration Cr 3+ ions with the group of -COOH, generating the obviously colorimetric reaction. To detection system, the optimal concentration of 4-MBA and pH was 5 μM and 9, respectively. Signal response was found to be proportional to Cr 3+ ions concentration in the range from 10 to 500 μM with a correlation coefficient of 0.993, with UV–Vis and colorimetric detection limits determined as 9 μM and 10 μM, respectively. In addition, the recovery of the system was estimated to be from 88.2 to 112.1%, which was satisfactory for practical analysis of samples. The platform would have great potential applications in many areas.

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4-巯基苯甲酸修饰Au@Ag纳米粒子基比色法水溶液中Cr3+离子的检测

重金属离子具有不可生物降解性和毒性，对生态平衡和人类健康构成威胁。简单、方便、快速的金属离子监测对消除金属离子污染具有重要意义。本文制备了4-巯基苯甲酸(4-MBA)功能化的银包金纳米粒子(Au@Ag NPs)作为比色探针，构建了比色铬III (Cr 3+)离子检测平台。结果表明，4-MBA-Au@Ag NPs能与低浓度的-COOH基团的cr3 +离子有效配位，产生明显的比色反应。对检测系统而言，4-MBA的最佳浓度为5 μM, pH为9 μM。在10 ~ 500 μM范围内，信号响应与Cr 3+浓度成正比，相关系数为0.993，紫外可见检测限为9 μM，比色检测限为10 μM。此外，该体系的回收率估计在88.2 ~ 112.1%之间，可用于样品的实际分析。该平台将在许多领域具有巨大的应用潜力。

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

Journal of Analytical Science and Technology Environmental Science-General Environmental Science

CiteScore

4.00

自引率

4.20%

发文量

审稿时长

13 weeks

期刊介绍： The Journal of Analytical Science and Technology (JAST) is a fully open access peer-reviewed scientific journal published under the brand SpringerOpen. JAST was launched by Korea Basic Science Institute in 2010. JAST publishes original research and review articles on all aspects of analytical principles, techniques, methods, procedures, and equipment. JAST’s vision is to be an internationally influential and widely read analytical science journal. Our mission is to inform and stimulate researchers to make significant professional achievements in science. We aim to provide scientists, researchers, and students worldwide with unlimited access to the latest advances of the analytical sciences.