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Sensors and Biosensors Based on Layered Double Hydroxides (LDHs) and...
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Sensors and Biosensors Based on Layered Double Hydroxides (LDHs) and Their Nanocomposites

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

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 5106

Special Issue Editors

Dr. Pier Gianni Medaglia

E-Mail Website
Guest Editor
Department of Industrial Engineering, University of Rome “Tor Vergata”, I-00133 Rome, Italy
Interests: nanostructured materials; thin films; physical characterization of novel functional materials; sensors
Prof. Dr. Mauro Tomassetti

E-Mail Website
Guest Editor
Department of Chemistry, University of Rome "La Sapienza", 00185 Rome, Italy
Interests: sensors; biosensors; immunosensors; foods; drugs; nutraceuticals
Special Issues, Collections and Topics in MDPI journals
Dr. Riccardo Pezzilli

E-Mail Website
Guest Editor
Department of Industrial Engineering, University of Rome ‘‘Tor Vergata’’, Viale del Politecnico 1, 00133 Rome, Italy
Interests: nanostructured materials; thin films; physical characterization of novel functional materials; sensors; biosensors; energy harvesting

Special Issue Information

Dear Colleagues,

Continued advances in materials science, chemistry, biology, nano-technology and microelectronics are greatly contributing to the proliferation of sensor science, which finds promising markets in the fields of medicine, industrial processes, pharmaceutical research, environmental monitoring, and food or beverage control.

Layered double hydroxides (LDHs) are two-dimensional nanostructured materials able to incorporate anionic species in the interlayer space, with a wide range of possibilities for tuning structures, stoichiometry, and functionalization. LDHs can be synthesized by relatively simple and numerous techniques, mainly starting from chip, non-toxic and common inorganic precursors. The particular structure and properties of these materials have allowed their use in various fields: industry, energy, catalysis, environment, biomedicine, and so on.

Furthermore, in the field of electrochemical sensors, biosensors and optical sensing, LDHs are attracting attention due to their porosity and the anion (inorganic or organic) exchange capability in the interlayer gallery.

This Special Issue aims to collect publications concerning pristine LDHs-based sensors and biosensors, including devices engineered with nanocomposites obtained in combination with other organic or inorganic nano-entities (inorganic species with different functionalities, carbon nano-allotropes, polymers, enzymes, and many others).

Original research papers and review articles are welcome, especially (but not exclusively) covering the topics of electrochemical chemosensors, biosensors, or optical sensors, by exploiting functionalized LDHs and nanocomposites.

Dr. Pier Gianni Medaglia
Prof. Dr. Mauro Tomassetti
Dr. Riccardo Pezzilli
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

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

  • LDH-based chemical sensors
  • LDH-based biosensors
  • composites-based sensors
  • composites-based biosensors

Published Papers (1 paper)

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Research

18 pages, 2954 KiB  
Article
Novel Electrochemical Sensors Based on L-Proline Assisted LDH for H2O2 Determination in Healthy and Diabetic Urine
by Mauro Tomassetti, Riccardo Pezzilli, Giuseppe Prestopino, Corrado Di Natale and Pier Gianni Medaglia
Sensors 2022, 22(19), 7159; https://doi.org/10.3390/s22197159 - 21 Sep 2022
Cited by 6 | Viewed by 4615
Abstract
In this paper, a novel non-enzymatic modified glassy carbon (GC) sensor, of the (GC-Agpaste)-catalytic proline-assisted LDH type, for H2O2 determination was fabricated, studied, characterized and employed to determine the hydrogen peroxide content in healthy and diabetic human urine. [...] Read more.
In this paper, a novel non-enzymatic modified glassy carbon (GC) sensor, of the (GC-Agpaste)-catalytic proline-assisted LDH type, for H2O2 determination was fabricated, studied, characterized and employed to determine the hydrogen peroxide content in healthy and diabetic human urine. LDH (whose composition can be schematized as [ZnIIAlIII (OH)2]+ NO3−·nH2O) is glued to glassy carbon by means of silver paste, while proline, which increases the catalytic properties of LDH, is used free in solution in the phosphate buffer. A voltametric survey was first conducted to ascertain the positive effect induced by the presence of proline, i.e., the increase of sensor sensitivity. Then a deep study of the new three-electrode amperometric proline-assisted LDH sensor, whose working electrode was of the same type as the one used to perform the cyclic voltammetry, was carried out, working at first in static air, then in a nitrogen atmosphere. Possible interferences from various substances, both oxidants and antioxidants, were also investigated. Lastly, the new amperometric sensor was successfully used to determine the H2O2 level in human urine from both healthy and diabetic subjects. The effect of proline in enhancing the properties of the sensor system was also investigated. The limit of detection (LOD) of the new catalytic sensor was of the order of 0.15 mmol L−1, working in air, and of 0.05 µmol L−1, working in nitrogen atmosphere. Full article
(This article belongs to the Special Issue Sensors and Biosensors Based on Layered Double Hydroxides (LDHs) and Their Nanocomposites)
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