An environmental governance-oriented nanoplatform for persistent ultrasensitive SERS detection and photocatalytic elimination of organic dyes in water

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchimica Acta Pub Date : 2025-10-10 DOI:10.1007/s00604-025-07606-y

Minzhe Li, Yuzhu Zhou, Guimei Wei, Wenyi Wang, Zhixing Liang, Changchun Wen, Xiang-Cheng Lin

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Abstract

In practical applications, constructing bifunctional substrates with highly sensitive surface-enhanced Raman scattering (SERS) detection capabilities and environmentally friendly degradation technologies has significant importance in environmental remediation. Herein, Ag/CuO/CF (ACC) bifunctional composites were successfully fabricated via a two-step process. First, CuO nanowire arrays were grown in situ on a copper foam (CF) substrate using a facile thermal oxidation method. Subsequently, Ag nanoparticles were deposited uniformly onto the CuO nanowire surface via chemical reduction. As a SERS substrate, the ACC platform exhibited exceptional detection capabilities for methylene blue (MB) and malachite green (MG), achieving ultra-high sensitivity with remarkably high enhancement factors and extremely low detection limits for both target molecules. Moreover, the ACC substrates exhibited excellent uniformity, repeatability, and stability, as well as remarkable performance recovery in real sample testing. As a photocatalytic substrate, ACCs exhibited outstanding photocatalytic efficiency for degrading MB and MG, maintaining degradation of 91.97% after five cycles. Such a bifunctional design offers a novel approach for developing a new generation of intelligent environmental remediation technologies. It is particularly suitable for scenarios requiring on-site rapid analysis and immediate treatment, such as the monitoring and elimination of high-risk trace-level pollutants. Therefore, exploring integrated “detection-treatment” strategies holds significant importance for practical environmental applications.

Graphical Abstract

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一个环境治理导向的纳米平台，用于持续超灵敏的SERS检测和光催化消除水中的有机染料

在实际应用中，构建具有高灵敏度表面增强拉曼散射（SERS）检测能力和环境友好降解技术的双功能衬底在环境修复中具有重要意义。本文采用两步法成功制备了Ag/CuO/CF （ACC）双功能复合材料。首先，采用简单的热氧化法在泡沫铜（CF）衬底上原位生长CuO纳米线阵列。随后，通过化学还原将Ag纳米粒子均匀沉积在CuO纳米线表面。作为SERS底物，ACC平台对亚甲基蓝（MB）和孔雀石绿（MG）表现出优异的检测能力，对这两种靶分子都具有超高的灵敏度、显著的高增强因子和极低的检测限。此外，ACC底物在实际样品测试中表现出优异的均匀性、重复性和稳定性，以及显著的性能恢复。ACCs作为光催化底物，对MB和MG表现出优异的光催化效率，5个循环后仍保持91.97%的降解率。这种双功能设计为开发新一代智能环境修复技术提供了新的途径。它特别适用于需要现场快速分析和立即处理的场景，例如监测和消除高风险痕量污染物。因此，探索综合“检测-处理”策略对实际环境应用具有重要意义。图形抽象

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

Microchimica Acta 化学-分析化学

CiteScore

9.80

自引率

5.30%

发文量

410

审稿时长

2.7 months

期刊介绍： As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.