柠檬酸盐包盖银纳米棱镜形状转变对As（III）的选择性比色传感

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2025-07-22 DOI:10.1016/j.dyepig.2025.113061

Saowanee Toonchue , Nakara Bhawawet , Kanet Wongravee , Apichat Imyim

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引用次数: 0

摘要

利用光介导合成的柠檬酸盐稳定银纳米片（AgNPs），建立了测定砷（III）的简便比色法。该方法可以在不使用其他功能化剂或改性剂的情况下选择性测定As（III）。As（III）的比色检测是基于化学蚀刻AgNPrs的形态转变。形貌变化可以通过监测局部表面等离子体共振（LSPR）谱的减小和位移来观察。该方法在2 min内实现了最大吸光度变化（A420/A580）。柠檬酸盐与As（III）的良好相互作用为该方法提供了良好的选择性和灵敏度，检测范围可达300 μg L−1，检出限为18 μg L−1。所建立的比色法对潜在干扰离子具有较高的耐受性，相对标准偏差为5.3%。应用柠檬酸盐包封AgNPrs成功地检测了饮用水样品中的As（III）离子，回收率为81.8% ~ 93.4%，精密度为2.0 ~ 6.3%。

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Selective colorimetric sensing for As(III) via shape transformation of citrate-capped Ag nanoprisms

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Selective colorimetric sensing for As(III) via shape transformation of citrate-capped Ag nanoprisms

A simple colorimetric method for As(III) determination was developed using citrate-stabilized silver nanoprisms (AgNPs) prepared via photo-mediated synthesis. This method enables the selective determination of As(III) without the use of other functionalizing or modifying agents. The colorimetric detection of As(III) is based on the morphology transition of AgNPrs via chemical etching. The morphology change can be observed by monitoring the decrease and shift of the local surface plasmon resonance (LSPR) spectrum. The method achieved the maximum change in absorbance ratio (A₄₂₀/A₅₈₀) within 2 min. The good interaction of citrate toward As(III) provides good selectivity and sensitivity of the method with the sensing range up to 300 μg L⁻¹ and the limit of detection of 18 μg L⁻¹. The developed colorimetric method exhibits high tolerance in the presence of potential interfering ions, with a relative standard deviation of 5.3 %. Citrate-capped AgNPrs were successfully employed for the detection of As(III) ions in drinking water samples, yielding satisfactory recoveries of 81.8–93.4 % and precision with a relative standard deviation of 2.0–6.3 %.

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.