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Special Issues
Green Applications of Photocatalysis, Photo-Thermocatalysis and Photo-Electrocatalysis
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Green Applications of Photocatalysis, Photo-Thermocatalysis and Photo-Electrocatalysis

A special issue of J (ISSN 2571-8800). This special issue belongs to the section "Chemistry & Material Sciences".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 7137

Special Issue Editors

Prof. Dr. Salvatore Scirè

E-Mail Website1 Website2
Guest Editor
Department of Chemical Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
Interests: synthesis, characterization and catalytic activity of supported catalysts; catalysts for environmental protection and energy production; catalysts in the petrochemical industry and refinery; gold based mono and bimetallic catalysts; photocatalytic oxidation and water splitting; hydrogen purification for fuel cell applications
Special Issues, Collections and Topics in MDPI journals
Dr. Roberto Fiorenza

E-Mail Website
Guest Editor
Department of Chemical Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
Interests: heterogeneous catalysis; photocatalysis; TiO2-based materials; air purification; water treatment; H2 economy; VOC oxidation; H2 production and purification; CO2 valorization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Since the first studies of Fujishima and Honda in the early 1970s dealing with the photocatalytic H2 production, photo-assisted catalytic processes have attracted a growing interest of academic and industrial researchers, promoting a multi-disciplinary approach involving materials science, catalysis, and environmental science. Their good performance under mild conditions, the easiness of the experimental set-ups, and the use of green and cheap raw materials are the most fascinating features of photocatalysis and related approaches. Specifically, the photocatalytic applications for environmental protection and energy production, as the removal of dangerous pollutants both in water and in air or the artificial photosynthesis, are valuable examples of efficient and environmentally friendly solutions to the nowadays issues.

Based on the above considerations, submissions to this Special Issue “Green applications of photocatalysis, photo-thermocatalysis, and photo-electrocatalysis” are welcomed, in the form of original research papers, reviews, or communications that highlight the state of research in the applications of photo-assisted catalysis as: a) photocatalytic air purification (VOCs or NOx removal); b) water decontamination (photocatalytic oxidation of dyes, pesticides, pharmaceutics, emerging contaminants); c) energy production (photocatalytic and photo-electro catalytic H2 production, water splitting, photoreforming); d) CO2 valorisation (CO2 photocatalytic and photo-electrocatalytic reduction); e) photo-assisted green and sustainable syntheses of value-added products and fuels; and f) photo-electrochemical (PEC) cells. Furthermore, studies focused on multicatalytic approaches as photo-thermocatalysis or photo-electrocatalysis applied to the above reactions will fulfil the aim of this issue. Finally, new research concerning the correlation between the physico-chemical properties and the photocatalytic performance in environmental and energy applications of conventional and unconventional photocatalysts will be taken into consideration.

Prof. Dr. Salvatore Scirè
Dr. Roberto Fiorenza
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. J is an international peer-reviewed open access quarterly 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 1200 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

  • Photocatalysis
  • Photo-electrocatalysis
  • Photo-thermocatalysis
  • Degradation of pollutants
  • H2 production
  • Conversion of CO2
  • Photo-assisted green synthesis
  • PEC cells

Published Papers (2 papers)

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Research

13 pages, 2605 KiB  
Article
Photocatalytic H2 Production on Au/TiO2: Effect of Au Photodeposition on Different TiO2 Crystalline Phases
by Stefano Andrea Balsamo, Salvatore Sciré, Marcello Condorelli and Roberto Fiorenza
J 2022, 5(1), 92-104; https://0-doi-org.brum.beds.ac.uk/10.3390/j5010006 - 24 Jan 2022
Cited by 1 | Viewed by 3228
Abstract
In this work, we investigated the role of the crystalline phases of titanium dioxide in the solar photocatalytic H2 production by the reforming of glycerol, focusing the attention on the influence of photodeposited gold, as a metal co-catalyst, on TiO2 surface. [...] Read more.
In this work, we investigated the role of the crystalline phases of titanium dioxide in the solar photocatalytic H2 production by the reforming of glycerol, focusing the attention on the influence of photodeposited gold, as a metal co-catalyst, on TiO2 surface. We correlated the photocatalytic activity of 1 wt% Au/TiO2 in anatase, rutile, and brookite phases with the structural and optical properties determined by Raman spectroscopy, N2 adsorption–desorption measurements, UV–vis Diffuse Reflectance Spectroscopy (UV–vis DRS), X-ray photoelectron spectroscopy (XPS), Photoluminescence spectroscopy (PL), and Dynamic Light scattering (DLS). The best results (2.55 mmol H2 gcat−1 h−1) were obtained with anatase and gold photodeposited after 30 min of solar irradiation. The good performance of Au/TiO2 in anatase form and the key importance of the strong interaction between gold and the peculiar crystalline phase of TiO2 can be a starting point to efficiently improve photocatalysts design and experimental conditions, in order to favor a green hydrogen production through solar photocatalysis. Full article
(This article belongs to the Special Issue Green Applications of Photocatalysis, Photo-Thermocatalysis and Photo-Electrocatalysis)
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15 pages, 6977 KiB  
Article
Ce2O3/BiVO4 Embedded in rGO as Photocatalyst for the Degradation of Methyl Orange under Visible Light Irradiation
by Damian C. Onwudiwe, Boitumelo M. Phadi and Opeyemi A. Oyewo
J 2021, 4(2), 154-168; https://0-doi-org.brum.beds.ac.uk/10.3390/j4020013 - 07 Jun 2021
Cited by 3 | Viewed by 2885
Abstract
A p–n heterojunction semiconductor structure composed of Ce3O4 and BiVO4 has been synthesized and then incorporated into reduced graphene oxide (rGO) by the hydrothermal method. The ternary composites were characterized by X-ray diffraction, transmission electron microscopy (TEM), scanning electron [...] Read more.
A p–n heterojunction semiconductor structure composed of Ce3O4 and BiVO4 has been synthesized and then incorporated into reduced graphene oxide (rGO) by the hydrothermal method. The ternary composites were characterized by X-ray diffraction, transmission electron microscopy (TEM), scanning electron microscopy (SEM), electron diffraction spectroscopy (EDS), and UV–vis spectroscopy. The efficiency of the composites as photocatalysts was determined by studying the oxidative degradation of methyl orange in aqueous solution under visible light irradiation. The effect of parameters such as pH, catalyst loading, and concentration of the dye solution was examined in order to determine their influence on the photocatalytic activity of the composites. The composite incorporated into reduced graphene oxide presented the highest percentage (above 90%) in 2 h time, attributed to the effect of the increased surface area. The process of the enhanced photocatalytic activity has been discussed based on the energy band positions of the nanoparticles within the composite. Full article
(This article belongs to the Special Issue Green Applications of Photocatalysis, Photo-Thermocatalysis and Photo-Electrocatalysis)
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