Synergistic SERS effects in organic/MoS2 heterojunctions with cavity structure enabling nanoplastics screening and antibiotic adsorption behavior detection

doi:10.1088/1674-1056/ada888

中国物理B ›› 2025, Vol. 34 ›› Issue (4): 47402-047402.doi: 10.1088/1674-1056/ada888

Synergistic SERS effects in organic/MoS₂ heterojunctions with cavity structure enabling nanoplastics screening and antibiotic adsorption behavior detection

Liqi Ma(马立琪), Abdur Rahim(阿卜杜勒-拉希姆), Baiju Lü(吕白菊), Muhammad Saleem(穆罕默德-萨利姆), Xiaoyu Zhang(张晓雨), Mingyue Li(李明月), Muhammad Zahid(穆罕默德-扎希德), and Mei Liu(刘玫)†

School of Physics and Electronics, Shandong Normal University, Jinan 250358, China

收稿日期:2025-01-08 修回日期:2025-01-08 接受日期:2025-01-10 出版日期:2025-04-15 发布日期:2025-04-15
通讯作者: Mei Liu E-mail:liumei@sdnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 12074229).

Synergistic SERS effects in organic/MoS₂ heterojunctions with cavity structure enabling nanoplastics screening and antibiotic adsorption behavior detection

School of Physics and Electronics, Shandong Normal University, Jinan 250358, China

Received:2025-01-08 Revised:2025-01-08 Accepted:2025-01-10 Online:2025-04-15 Published:2025-04-15
Contact: Mei Liu E-mail:liumei@sdnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 12074229).

摘要/Abstract

摘要： The detection of nanoplastics (NPs) and their interactions with antibiotics is critical due to their potential environmental and health risks. Traditional detection methods are challenged by the small size and chemical similarity of NPs to microplastics. Current surface-enhanced Raman scattering (SERS) substrates for NP detection are limited by high cost, reliance on single enhancement modes, and insufficient sensitivity and selectivity, especially for NP-antibiotic complexes. In this study, the F/M-AAO substrate, which integrates 2,3,5,6-tetrafluoro-tetracyanoquinodimethane (F$_{4}$TCNQ) and molybdenum disulfide (MoS$_{2}$) with anodic aluminum oxide (AAO) templates, is used to enhance the detection of NPs and NP-antibiotic complexes. The conical cavity structure of the substrate facilitates the enrichment and direct detection of NPs with diameters smaller than 450 nm. The three-dimensional (3D) F/M-AAO substrate achieved a limit of detection (LOD) of 1.73$\times10^{6}$ ng/L for 100-nm NPs and a minimum detection concentration of 10$^{-10}$ M for ciprofloxacin adsorbed on NPs (NPs-CIP). It demonstrated remarkable sensitivity and selectivity in the detection of both individual NPs and NP-antibiotic complexes. This work highlights the innovative application of the F/M-AAO substrate in the SERS detection of NPs and NP-antibiotic complexes, providing a low-cost and effective platform for monitoring emerging environmental contaminants.

关键词: synergistic SERS enhancement, organic/MoS$_{2}$ composite, nanoplastics

Abstract: The detection of nanoplastics (NPs) and their interactions with antibiotics is critical due to their potential environmental and health risks. Traditional detection methods are challenged by the small size and chemical similarity of NPs to microplastics. Current surface-enhanced Raman scattering (SERS) substrates for NP detection are limited by high cost, reliance on single enhancement modes, and insufficient sensitivity and selectivity, especially for NP-antibiotic complexes. In this study, the F/M-AAO substrate, which integrates 2,3,5,6-tetrafluoro-tetracyanoquinodimethane (F$_{4}$TCNQ) and molybdenum disulfide (MoS$_{2}$) with anodic aluminum oxide (AAO) templates, is used to enhance the detection of NPs and NP-antibiotic complexes. The conical cavity structure of the substrate facilitates the enrichment and direct detection of NPs with diameters smaller than 450 nm. The three-dimensional (3D) F/M-AAO substrate achieved a limit of detection (LOD) of 1.73$\times10^{6}$ ng/L for 100-nm NPs and a minimum detection concentration of 10$^{-10}$ M for ciprofloxacin adsorbed on NPs (NPs-CIP). It demonstrated remarkable sensitivity and selectivity in the detection of both individual NPs and NP-antibiotic complexes. This work highlights the innovative application of the F/M-AAO substrate in the SERS detection of NPs and NP-antibiotic complexes, providing a low-cost and effective platform for monitoring emerging environmental contaminants.

Key words: synergistic SERS enhancement, organic/MoS$_{2}$ composite, nanoplastics

中图分类号: (Raman and optical spectroscopy)

74.25.nd

72.80.Tm (Composite materials) 88.20.rb (Plastics)

Liqi Ma(马立琪), Abdur Rahim(阿卜杜勒-拉希姆), Baiju Lü(吕白菊), Muhammad Saleem(穆罕默德-萨利姆), Xiaoyu Zhang(张晓雨), Mingyue Li(李明月), Muhammad Zahid(穆罕默德-扎希德), and Mei Liu(刘玫). Synergistic SERS effects in organic/MoS₂ heterojunctions with cavity structure enabling nanoplastics screening and antibiotic adsorption behavior detection[J]. 中国物理B, 2025, 34(4): 47402-047402.

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Synergistic SERS effects in organic/MoS₂ heterojunctions with cavity structure enabling nanoplastics screening and antibiotic adsorption behavior detection

Synergistic SERS effects in organic/MoS₂ heterojunctions with cavity structure enabling nanoplastics screening and antibiotic adsorption behavior detection

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