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Recent Innovations in Biosensors for Chemical Analysis

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Biosensors".

Deadline for manuscript submissions: closed (20 June 2024) | Viewed by 2215

Special Issue Editor


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Guest Editor
Department of Chemistry and Biochemistry, Charles E. Schmidt College of Science, Florida Atlantic University, Boca Raton, FL 33431, USA
Interests: bio/chemical sensors; innovative optics; electrochemistry; microfluidics techniques

Special Issue Information

Dear Colleagues,

Biosensors, regarded as a pivotal branch of modern analytical technology, are gaining prominence in research, product development, and investment. Their increasing recognition stems from their transformative potential in facilitating real-time analysis and in situ monitoring. Biosensors are uniquely positioned to directly detect primary analytes, rendering them indispensable tools across diverse applications and giving them the potential to revolutionize fields such as healthcare, environmental monitoring, and biotechnology.

Due to their remarkable compatibility and versatility, biosensors offer a dynamic platform for integrating various fabrication and detection technologies. This convergence includes cutting-edge methodologies such as nanotechnology, microfluidics, electrochemical detection, and optical technologies, which can be meticulously tailored to meet specific research and application requirements. Such tailored integration enhances the overall efficiency of analytical processes and empowers researchers and industry professionals to address intricate challenges. Through this multidisciplinary approach, biosensors continue to drive innovation and deliver valuable insights into contemporary research and development endeavors.

This Special Issue seeks to accomplish the following objectives:

  1. Investigate novel channels and methodologies for developing biosensors based on new functional materials and innovative sensing principles.
  2. Establish a platform for exchanging research experiences in biosensors, providing academic support for an expanding initiative to advance the development of biosensors.
  3. Promote the broader utilization of biosensors across various fields.

Dr. Renjie Wang
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sensors
  • biosensors
  • nanotechnology
  • microfluidics
  • electrochemical detection
  • optical sensing

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Published Papers (1 paper)

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Research

12 pages, 2102 KiB  
Article
Facile Preparation of TiO2NTs/Au@MOF Nanocomposites for High-Sensitivity SERS Sensing of Gaseous VOC
by Chunyan Wang, Yina Jiang, Yuyu Peng, Jia Huo and Ban Zhang
Sensors 2024, 24(14), 4447; https://doi.org/10.3390/s24144447 - 10 Jul 2024
Cited by 4 | Viewed by 1615
Abstract
Surface-enhanced Raman spectroscopy (SERS) is a promising and highly sensitive molecular fingerprint detection technology. However, the development of SERS nanocomposites that are label-free, highly sensitive, selective, stable, and reusable for gaseous volatile organic compounds (VOCs) detection remains a challenge. Here, we report a [...] Read more.
Surface-enhanced Raman spectroscopy (SERS) is a promising and highly sensitive molecular fingerprint detection technology. However, the development of SERS nanocomposites that are label-free, highly sensitive, selective, stable, and reusable for gaseous volatile organic compounds (VOCs) detection remains a challenge. Here, we report a novel TiO2NTs/AuNPs@ZIF−8 nanocomposite for the ultrasensitive SERS detection of VOCs. The three-dimensional TiO2 nanotube structure with a large specific surface area provides abundant sites for the loading of Au NPs, which possess excellent local surface plasmon resonance (LSPR) effects, further leading to the formation of a large number of SERS active hotspots. The externally wrapped porous MOF structure adsorbs more gaseous VOC molecules onto the noble metal surface. Under the synergistic mechanism of physical and chemical enhancement, a better SERS enhancement effect can be achieved. By optimizing experimental conditions, the SERS detection limit for acetophenone, a common exhaled VOC, is as low as 10−11 M. And the relative standard deviation of SERS signal intensity from different points on the same nanocomposite surface is 4.7%. The acetophenone gas achieves a 1 min response and the signal reaches stability in 4 min. Under UV irradiation, the surface-adsorbed acetophenone can be completely degraded within 40 min. The experimental results demonstrate that this nanocomposite has good detection sensitivity, repeatability, selectivity, response speed, and reusability, making it a promising sensor for gaseous VOCs. Full article
(This article belongs to the Special Issue Recent Innovations in Biosensors for Chemical Analysis)
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