Highly efficient surface-enhanced Raman scatting performance of the Na2Ti3O7-Au chip for facile thiram or malachite green sensing

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-04-27 DOI:10.1016/j.colsurfa.2025.137051

Lu Yang , Jinping Tang , Shuang Guo , Eungyeong Park , Lei Chen , Young Mee Jung

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引用次数: 0

Abstract

Thiram and malachite green (MG) are widely used in daily life, but their excessive residues, as highlighted by the World Health Organization (WHO), pose significant health risks. In this study, Na₂Ti₃O₇ nanosheets (NTSs) with a 3D cross-linked morphology were prepared by hydrothermal synthesis and magnetron sputtering for rapid detection of thiram and MG. NTS-Au composites demonstrated excellent surface-enhanced Raman scattering (SERS) activity, with an enhancement factor (EF) of 1.43 × 10⁷. Notably, the NTS-Au composites showed excellent reproducibility and a good linear relationship in the concentration range of 10⁻³ to 10⁻⁸ M, achieving limits of detection (LODs) of 4.07 × 10⁻¹⁰ for thiram and 1.82 × 10⁻⁹ M for MG. The remarkable sensitivity arises from the unique nanosheet structure, which enables multiple reflections of electromagnetic waves. This light-trapping effect enhances resonance absorption, promoting charge transfer (CT) and exciton enhancement. This study provides a novel approach for the rapid and sensitive detection of thiram and MG.

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Na2Ti3O7-Au芯片的高效表面增强拉曼散射性能，用于易于感知的红色或孔雀石绿

Thiram和孔雀石绿（MG）在日常生活中被广泛使用，但正如世界卫生组织（WHO）所强调的那样，它们的过量残留对健康构成重大威胁。本研究通过水热合成和磁控溅射制备了具有三维交联形貌的Na2Ti3O7纳米片（nts），用于快速检测铁和镁。NTS-Au复合材料表现出优异的表面增强拉曼散射（SERS）活性，增强因子（EF）为1.43 × 107。值得注意的是，NTS-Au复合材料在10−3 ~ 10−8 M的浓度范围内具有良好的重复性和良好的线性关系，锡兰的检出限（lod）为4.07 × 10−10 M， MG的检出限为1.82 × 10−9 M。非凡的灵敏度来自于独特的纳米片结构，它可以对电磁波进行多次反射。这种光捕获效应增强共振吸收，促进电荷转移（CT）和激子增强。本研究为快速、灵敏地检测硫胺和MG提供了一种新的方法。

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

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.