Special Issue "Flame Synthesis and Characterization of Oxide Nanoparticles"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Nanomaterials and Nanotechnology".

Deadline for manuscript submissions: 20 October 2021.

Special Issue Editor

Dr. Silvana De Iuliis
E-Mail Website
Guest Editor
Institute of Condensed Matter Chemistry and Technologies for Energy, Milano Unit – National Research Council (CNR), Milano, Italy
Interests: optical diagnostic techniques; laser-induced incandescence (LII); laser-induced breakdown spectroscopy (LIBS); synthesis via flame spray pyrolysis of oxide nanoparticles and characterization; in-flame synthesis of carbon nanoparticles and characterization

Special Issue Information

Dear Colleagues,

In recent decades, oxide nanoparticles have drawn the interest of the scientific community for their peculiar properties, essentially related to their crystalline phase, degree of aggregation, surface area, and porosity. These properties make them attractive in a wide range of application fields, including photocatalysis, gas sensors, and energy storage.

Among the different synthesis methods employed, flame synthesis of oxide nanoparticles is a particularly interesting bottom-up approach for the production of tailored highly functionalized nanoparticles with specific and unique properties. In fact, changing the experimental conditions in the flame, changes in temperature field, gas velocity, and, consequently, residence time will occur, which can affect nanoparticles properties.

Although flame synthesis is the commercially used method for nanoparticle production, a lot of work is still needed to understand the chemical and physical processes of nanoparticle synthesis in relation to the properties required in a specific application. In this context, it is of particular interest to develop and apply diagnostic techniques for the investigation and monitoring of the synthesis process. Characterization of the oxide nanoparticles during and after the synthesis is important for the specific application considered. Moreover, the development of modeling and simulation tools will help to gain a whole comprehension of the processes involved.

This Special Issue on “Flame Synthesis and Characterization of Oxide Nanoparticles” will publish high-quality research articles on the broad area of synthesis, modeling, and characterization of oxide nanoparticles produced in flames.

The topics of interest include but are not limited to the following:

  • Oxide nanoparticles formation and growth in flames
  • Diagnostics
  • Modeling
  • Applications

Dr. Silvana De Iuliis
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 papers will be 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. Materials 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 2000 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

  • oxide nanoparticles
  • diagnostics
  • flame synthesis
  • nanoparticle characterization

Published Papers (1 paper)

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Research

Open AccessArticle
Room-Temperature Catalyst Enables Selective Acetone Sensing
Materials 2021, 14(8), 1839; https://doi.org/10.3390/ma14081839 - 08 Apr 2021
Viewed by 359
Abstract
Catalytic packed bed filters ahead of gas sensors can drastically improve their selectivity, a key challenge in medical, food and environmental applications. Yet, such filters require high operation temperatures (usually some hundreds °C) impeding their integration into low-power (e.g., battery-driven) devices. Here, we [...] Read more.
Catalytic packed bed filters ahead of gas sensors can drastically improve their selectivity, a key challenge in medical, food and environmental applications. Yet, such filters require high operation temperatures (usually some hundreds °C) impeding their integration into low-power (e.g., battery-driven) devices. Here, we reveal room-temperature catalytic filters that facilitate highly selective acetone sensing, a breath marker for body fat burn monitoring. Varying the Pt content between 0–10 mol% during flame spray pyrolysis resulted in Al2O3 nanoparticles decorated with Pt/PtOx clusters with predominantly 5–6 nm size, as revealed by X-ray diffraction and electron microscopy. Most importantly, Pt contents above 3 mol% removed up to 100 ppm methanol, isoprene and ethanol completely already at 40 °C and high relative humidity, while acetone was mostly preserved, as confirmed by mass spectrometry. When combined with an inexpensive, chemo-resistive sensor of flame-made Si/WO3, acetone was detected with high selectivity (≥225) over these interferants next to H2, CO, form-/acetaldehyde and 2-propanol. Such catalytic filters do not require additional heating anymore, and thus are attractive for integration into mobile health care devices to monitor, for instance, lifestyle changes in gyms, hospitals or at home. Full article
(This article belongs to the Special Issue Flame Synthesis and Characterization of Oxide Nanoparticles)
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