Sensors based on CNT@PSS-AuNPs/rGO layered films for portable detection of ciprofloxacin

IF 23.2 2区 材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Advanced Composites and Hybrid Materials Pub Date : 2024-12-19 DOI:10.1007/s42114-024-01156-2
Bo Long, Qian Zhang, Lintong Zhang, Qi Liu, Qiongqiong Xing, Fangfang Qu, Liying Deng, Peng Yan, Liwei Wang, Meng An, Dapeng Ye, Zhanhui Yuan
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Abstract

Trace amounts of antibiotics in water can accumulate in the human body through the food chain, posing significant health risks. Therefore, there is an urgent need to develop simple and effective methods for detecting antibiotics in water. In this study, we prepared electrochemical aptamer sensors based on carbon nanotubes@polystyrene sulfonate-gold nanoparticles/reduced graphene oxide (CNT@PSS-AuNPs/rGO) layered thin films for real-time, on-site detection of ciprofloxacin (CIP) in aquaculture environments, utilizing a portable sensing detection device. The CNT@PSS-AuNPs/rGO layered film offers an excellent specific surface area, providing ample binding sites for the aptamer. The functionalized CNT@PSS-AuNPs enhance the dispersibility and conductivity of the substrate material and increase the surface area of the electrode when loaded with rGO. Under optimal experimental conditions, the developed sensor exhibits a dynamic range from 4 ng/mL to 1.0 × 103 ng/mL and a limit of detection of 4 ng/mL (S/N = 3), demonstrating satisfactory sensitivity. The sensor also shows good stability, with a relative standard deviation of less than 1% after 100 repeated measurements. Moreover, when combined with a portable detection platform, CIP levels in aqueous environments can be analyzed intelligently, rapidly, and timely. Our study aims to promote simple and effective detection strategies, potentially extending their practical applications.

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基于 CNT@PSS-AuNPs/rGO 层状薄膜的传感器用于便携式环丙沙星检测
水中微量的抗生素可通过食物链在人体内积累,对健康构成重大威胁。因此,迫切需要开发简单有效的检测水中抗生素的方法。在本研究中,我们利用便携式传感检测装置,制备了基于nanotubes@polystyrene磺酸碳-金纳米颗粒/还原氧化石墨烯(CNT@PSS-AuNPs/rGO)层状薄膜的电化学适体传感器,用于水产养殖环境中环丙沙星(CIP)的实时现场检测。CNT@PSS-AuNPs/还原氧化石墨烯层状膜具有优异的比表面积,为适体提供了充足的结合位点。功能化CNT@PSS-AuNPs增强了基板材料的分散性和导电性,并增加了负载氧化石墨烯时电极的表面积。在最佳实验条件下,该传感器的动态范围为4 ng/mL ~ 1.0 × 103 ng/mL,检测限为4 ng/mL (S/N = 3),具有良好的灵敏度。该传感器具有良好的稳定性,经过100次重复测量,相对标准偏差小于1%。此外,当与便携式检测平台结合使用时,可以智能,快速,及时地分析水环境中的CIP水平。我们的研究旨在促进简单有效的检测策略,潜在地扩展其实际应用。
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阿拉丁
PSS
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rGO
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PSS
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rGO
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phosphate buffer solution
来源期刊
CiteScore
26.00
自引率
21.40%
发文量
185
期刊介绍: Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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