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Chemosensors
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10th Anniversary of Chemosensors—Recent Advances in Chemical Sensing Based...
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10th Anniversary of Chemosensors—Recent Advances in Chemical Sensing Based on Nanomaterials

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Nanostructures for Chemical Sensing".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 2177

Special Issue Editor

Prof. Dr. Elisabetta Comini

E-Mail Website
Guest Editor
Sensor Lab, Department of Information Engineering, University of Brescia and CNR INO, Via Valotti 9, 25133 Brescia, Italy
Interests: metal oxides; nanowires; chemical sensors; gas sensors; heterostructures; functional materials; material synthesis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are celebrating the 10th anniversary of Chemosensors with a Special Issue in the Section “Nanostructures for Chemical Sensing” (IF: 4.229, ISSN 2227-9040) in 2022.

We would like to take this opportunity to thank our readers, innumerable authors, anonymous peer reviewers, editors, and all the people working in some way for the journal who have joined their efforts for years. These highlights would not have been possible without your participation.

To highlight this anniversary, we are leading a Special Issue that will cover various topics related to Nanostructures for Chemical Sensing. The growing advance of nanostructured materials in sensing has increasingly pointed to promising sensors with several applications, spanning the environmental, food, pharmaceutical and clinical analysis fields.

The Special Issue covers a wide range of hot topics related to chemosensors. We invite you to contribute an original research paper or a comprehensive review article on a trendy or hot topic for peer-review and possible publication.

Prof. Dr. Elisabetta Comini
Guest Editor

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. Chemosensors is an international peer-reviewed open access monthly 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 2700 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

  • nanomaterials
  • nanostructures
  • chemosensors

Published Papers (2 papers)

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17 pages, 5573 KiB  
Article
Enhanced Gas Sensing Performance of CuO-ZnO Composite Nanostructures for Low-Concentration NO2 Detection
by Hakimeh Pakdel, Matteo Borsi, Massimo Ponzoni and Elisabetta Comini
Chemosensors 2024, 12(4), 54; https://doi.org/10.3390/chemosensors12040054 - 05 Apr 2024
Viewed by 476
Abstract
The detection of nitrogen dioxide (NO2) is essential for safeguarding human health and addressing environmental sustainability. That is why, in the last decades, gas sensors have been developed to detect NO2 to overcome these hazards. This study explores the use [...] Read more.
The detection of nitrogen dioxide (NO2) is essential for safeguarding human health and addressing environmental sustainability. That is why, in the last decades, gas sensors have been developed to detect NO2 to overcome these hazards. This study explores the use of a novel CuO-ZnO composite synthesized through a polyol and sol–gel technique to enhance gas sensing performance. The CuO-ZnO composite offers the advantage of a synergic combination of its properties, leading to improved sensitivity, selectivity, and low detection limit. The innovative polyol technique employed in this research enables the controlled synthesis of hierarchical CuO and porous ZnO structures. The composite formation is achieved using the sol–gel method, resulting in CuO-ZnO composites with different ratios. The structural, morphological, and optical properties of the materials have been characterized using FESEM, X-ray diffraction, and UV-vis spectroscopy. Gas sensing experiments demonstrate enhanced performance, particularly in sensitivity and selectivity for NO2, even at low concentrations. The composites also exhibit improved baseline stability compared to pristine CuO and ZnO. This study explains the influence of humidity on gas sensing properties by examining interactions between water molecules and sensor surfaces. Notably, the developed CuO-ZnO composite displays excellent selectivity towards NO2, attributed to favorable bonding characteristics and acid-base properties. Overall, this research contributes to advancing gas sensor technology, providing a promising potential for sensitive and selective NO2 detection, thereby addressing critical needs for human health and environmental protection. Full article
(This article belongs to the Special Issue 10th Anniversary of Chemosensors—Recent Advances in Chemical Sensing Based on Nanomaterials)
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14 pages, 3079 KiB  
Article
Highly Selective Arsenite Sensor Based on Gold Nanoparticles and Ionic Liquids
by Xuan Hao Lin, Mann Joe Wong and Sam Fong Yau Li
Chemosensors 2023, 11(5), 302; https://doi.org/10.3390/chemosensors11050302 - 19 May 2023
Viewed by 1128
Abstract
Here, we report a highly selective arsenite (As(III)) sensor based on gold nanoparticles (AuNPs) and ionic liquids (ILs). AuNPs were citrate-capped with negative charges on their surfaces, and could aggregate and precipitate once electrolytes were introduced to neutralize the negative charges. In this [...] Read more.
Here, we report a highly selective arsenite (As(III)) sensor based on gold nanoparticles (AuNPs) and ionic liquids (ILs). AuNPs were citrate-capped with negative charges on their surfaces, and could aggregate and precipitate once electrolytes were introduced to neutralize the negative charges. In this study, we discovered that organic ILs, behaving similarly to inorganic electrolytes such as NaCl, could induce the aggregation and precipitation of AuNPs much more efficiently than inorganic electrolytes. Since As(III) inhibited while ILs promoted the aggregation of AuNPs, we examined the interactions between AuNPs, As(III), and ILs and the possibility of using ILs and AuNPs as a sensing probe to detect arsenite and determine its concentration. Six different ILs were evaluated for this purpose in this study. Repeatability, interference, stability, selectivity, and sensitivity were investigated to evaluate the As(III) sensing probe. The limit of detection (LOD) of the sensor sBMP was as low as 0.18 ppb, ranked as the second lowest among the reported arsenite sensors. The sensing of arsenite was also demonstrated with real water samples and was cross-validated with ICP-OES. Full article
(This article belongs to the Special Issue 10th Anniversary of Chemosensors—Recent Advances in Chemical Sensing Based on Nanomaterials)
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