Rapid SERS detection of antimony using a superparamagnetic FA@MIL-101(Fe) composite substrate

IF 9 Q1 ENVIRONMENTAL SCIENCES

Environmental Chemistry and Ecotoxicology Pub Date : 2025-01-01 DOI:10.1016/j.enceco.2024.12.007

Zhenli Sun , Jianghong Tang , Xunlong Ji , Jingjing Du

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引用次数: 0

Abstract

The pollution of antimony (Sb) and its accumulation as a persistent toxic substance (PTS) within environmental systems, leading to substantial hazards for ecosystems and public health. Therefore, developing rapid and sensitive methods for Sb detection is essential for mitigating its environmental impact. SERS presents a promising approach for detecting Sb, attributed to its high sensitivity and ability to capture distinct molecular fingerprints. However, traditional SERS substrates have struggled with effective detection because of weak interactions between Sb and traditional SERS substrate. To address this issue, a FA@MIL-101(Fe) composite combining Fe₃O₄’s magnetic properties and MIL-101(Fe)’s strong adsorption was synthesized, significantly enhancing Sb(III) detection. This substrate showed high sensitivity and selectivity, achieving a detection limit below 4 × 10⁻⁸ M, while effectively minimizing interference from other ions. Additionally, the substrate maintained long-term stability, consistently performing over 21 days. The FA@MIL-101(Fe) composite substrate offers a versatile and efficient platform for Sb(III) detection, providing broad potential for monitoring PTS in environmental applications.

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利用超顺磁FA@MIL-101（Fe）复合衬底快速SERS检测锑

锑（Sb）的污染及其作为持久性有毒物质（PTS）在环境系统中的积累，对生态系统和公众健康造成重大危害。因此，开发快速灵敏的Sb检测方法对于减轻Sb对环境的影响至关重要。由于其高灵敏度和捕获不同分子指纹的能力，SERS提出了一种很有前途的检测Sb的方法。然而，由于Sb与传统SERS底物之间的弱相互作用，传统SERS底物难以有效检测。为了解决这一问题，合成了一种结合Fe₃O₄磁性和MIL-101（Fe）强吸附的FA@MIL-101（Fe）复合材料，显著提高了对Sb（III）的检测能力。该底物具有较高的灵敏度和选择性，检测限低于4 × 10−8 M，同时有效地减少了其他离子的干扰。此外，底物保持了长期稳定性，在21天内表现稳定。FA@MIL-101（Fe）复合衬底为Sb（III）检测提供了一个多功能和高效的平台，为环境应用中的PTS监测提供了广阔的潜力。

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来源期刊

Environmental Chemistry and Ecotoxicology

CiteScore

15.40

自引率

0.00%

发文量