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Published on: February 19, 2016
A high-performance SERS imprinted membrane based on Ag/CNTs for selective detection of spiramycin
Hongji Li1, Junfu Wang2, Xiyue Wang3
1Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, PR China; College of Environmental Science and Engineering, Jilin Normal University, Siping 136000, China.
This study developed a novel eggshell membrane (ESM) biosensor using carbon nanotubes (CNTs) and silver nanoparticles (Ag NPs) for sensitive spiramycin detection. The imprinted membrane achieved a low detection limit, showing promise for antibiotic analysis.
Area of Science:
- Materials Science
- Analytical Chemistry
- Biotechnology
Background:
- Eggshell membrane (ESM) offers biocompatibility and mechanical support.
- Carbon nanotubes (CNTs) enhance material properties and detection sensitivity.
- Silver nanoparticles (Ag NPs) are crucial for surface-enhanced Raman spectroscopy (SERS) substrates.
Purpose of the Study:
- To develop a selective and sensitive SERS imprinted membrane for spiramycin detection.
- To utilize ESM as a substrate for enhanced sensor performance.
- To investigate the role of CNTs and Ag NPs in improving mechanical properties and detection sensitivity.
Main Methods:
- Functionalization of ESM with CNTs.
- Decoration of CNTs-ESM with Ag NPs via in-situ reduction to create a SERS substrate.
- Coating with imprinted polymers for selective spiramycin recognition.
- Characterization of the substrate and performance evaluation using SERS.
Main Results:
- CNTs significantly improved the mechanical properties of the ESM substrate.
- The synthesized SERS imprinted membrane demonstrated high sensitivity for spiramycin detection.
- A linear correlation between SERS intensity and spiramycin concentration (10⁻⁶ M to 10⁻¹¹ M) was observed.
- A low detection limit of 10⁻¹¹ M with R² = 0.9864 was achieved.
Conclusions:
- The developed SERS imprinted membrane is effective for the selective detection of spiramycin.
- The integration of ESM, CNTs, and Ag NPs offers a promising platform for antibiotic detection.
- This approach broadens the application of SERS in analyzing antibiotics in real-world samples.
