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Advances in Photocatalysis: Photocatalytic Materials and Applications

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (10 September 2023) | Viewed by 1971

Special Issue Editor


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Guest Editor
Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
Interests: semiconductor nanocrystalline materials; photocatalysis; photo(electro)catalysis; environmental applications; pollutants photodegradation; CO2 photoreduction; H2 photocatalytic generation; titanate elongated nanostuctures; heterojunction nanocomposites
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Special Issue Information

Dear Colleagues,

Photocatalysis represents an important class of chemical transformation that uses the energy provided by light to drive reactions that are difficult to carry out in the dark. Photocatalysis is defined as a change in the rate of a photochemical reaction by the activation of a semiconductor photocatalyst with sunlight or artificial light (ultraviolet or visible radiation). This is an advanced technique with several applications, such as solar energy conversion, photo-sensible sensors, wastewater and air treatment, organic and inorganic synthesis, surface science and storage devices, etc.

The biggest limitation of this technique is the choice of the semiconductor material. Several semiconductors have drawbacks such as a high rate of recombination of photogenerated electron-hole pairs within the semiconductor or low absorption of radiation in the visible range.

Therefore, the search for new semiconductor materials with improved properties has attracted the interest of researchers and innovative solutions are being proposed.

In this context, this Special Issue, entitled Advances in Photocatalysis: Photocatalytic Materials and Applications, will bring together recent developments in the field of new semiconductor materials for photocatalytic applications.

The articles presented in this Special Issue will cover various topics, such as:

  • Synthesis and characterization of novel photocatalysts.
  • Applications of photocatalysts in different areas:
    • wastewater and air treatment
    • energy conversion
    • drug delivery
    • others
  • Photocatalytic materials to address specific sustainability challenges.
  • Photocatalytic synthesis of organic and inorganic compounds.
  • Critical reviews and perspectives on photocatalyst applications.

Dr. Beatriz Trindade Barrocas
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. 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 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

  • novel photocatalysts
  • semiconductor
  • photocatalysis
  • environmental applications
  • water splitting
  • wastewater treatment
  • air purification
  • pollutants photocatalytic removal
  • energy conversion
  • drug delivery

Published Papers (1 paper)

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Research

16 pages, 2504 KiB  
Article
Enhancing Removal of Pollutants by Combining Photocatalysis and Photo-Fenton Using Co, Fe-Doped Titanate Nanowires
by B. T. Barrocas, R. Osawa, M. Conceição Oliveira and O. C. Monteiro
Materials 2023, 16(5), 2051; https://doi.org/10.3390/ma16052051 - 1 Mar 2023
Cited by 2 | Viewed by 1292
Abstract
Aiming to improve their photocatalytic performance, titanate nanowires (TNW) were modified by Fe and Co (co)-doping, FeTNW, CoTNW and CoFeTNW samples, using a hydrothermal methodology. XRD characterization agrees with the existence of Fe and Co in the lattice structure.and the existence of Co [...] Read more.
Aiming to improve their photocatalytic performance, titanate nanowires (TNW) were modified by Fe and Co (co)-doping, FeTNW, CoTNW and CoFeTNW samples, using a hydrothermal methodology. XRD characterization agrees with the existence of Fe and Co in the lattice structure.and the existence of Co2+ together with the presence of Fe2+ and Fe3+ in the structure was confirmed by XPS. The optical characterization of the modified powders shows the impact of the dd transitions of both metals in the absorption properties of TNW, mainly in the creation of additional 3d energetic levels within the prohibited zone. The effect of the doping metal(s) in the recombination rate of photo-generated charge carriers suggests a higher impact of Fe presence when compared to Co. The photocatalytic characterization of the prepared samples was evaluated via the removal of acetaminophen. Furthermore, a mixture containing both acetaminophen and caffeine, a well-known commercial combination, was also tested. CoFeTNW sample was the best photocatalyst for the degradation of acetaminophen in both situations. A mechanism for the photo-activation of the modified semiconductor is discussed and a model proposed. It was concluded that both Co and Fe are essential, within the TNW structure, for the successful removal of acetaminophen and caffeine. Full article
(This article belongs to the Special Issue Advances in Photocatalysis: Photocatalytic Materials and Applications)
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