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Catalysts
Special Issues
Photocatalytic Synthesis
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Photocatalytic Synthesis

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Photocatalysis".

Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 9264

Special Issue Editors

Prof. Dr. Raffaele Molinari

E-Mail Website
Guest Editor
Department of Environmental Engineering, University of Calabria, Via P. Bucci, Cubo 45/A, I-87036 Arcavacata di Rende, CS, Italy
Interests: membrane processes; catalytic and photocatalytic membrane reactors; complexation reactions coupled with membranes (supported liquid membranes; ultrafiltration assisted by polymers); saving, recovery, and recycling of matter and energy by membrane processesers); saving, recovery, and recycling of matter and energy by membrane processes
Special Issues, Collections and Topics in MDPI journals
Dr. Cristina Lavorato

E-Mail Website
Guest Editor
Department of Environmental Engineering, University of Calabria, Rende (Cosenza), Italy
Interests: catalytic and photocatalytic organic synthesis; preparation and characterization of catalysts, photocatalysts and membranes; membrane processes; catalytic and photocatalytic membrane reactors

Special Issue Information

Dear Colleagues,

Advanced green chemical technologies and processes in organic and inorganic synthesis/conversion are today one of the most important challenges for a sustainable future of the Earth. Utilization of renewable energy sources, in particular solar energy, is a key aspect of sustainability. Research on heterogeneous and homogeneous photocatalysis (PC) has been growing in the last decade to explore the various possibilities of applications offered by the synthesis of new and/or modified photocatalytic materials. Although photocatalytic processes often involve unselective reactions, in recent years, there has been an increasing amount of interest in application also for selective reduction and oxidation reactions.

This Special Issue aims to cover all photocatalytic aspects concerning photocatalytic synthesis, photocatalytic conversion, photocatalytic oxidations, photocatalytic reductions, photocatalytic reactors, photocatalytic membrane reactors, photocatalytic membranes, organic photosynthesis, photodegradation, and photocatalytic materials. Experimental and theoretical contributions are within the scope of this Special Issue. Original research papers, short communications, and review articles are invited for submission.

Prof. Dr. Raffaele Molinari
Dr. Cristina Lavorato
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. Catalysts 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

  • Photocatalytic synthesis
  • Photocatalytic conversion
  • Photocatalytic oxidations
  • Photocatalytic reductions
  • Photocatalytic reactors
  • Photocatalytic membrane reactor
  • Photocatalytic membrane
  • Organic photosynthesis
  • Photodegradation
  • Photocatalytic materials
  • Photocatalysis
  • Photocatalyst

Published Papers (2 papers)

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Research

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16 pages, 7812 KiB  
Article
Photocatalytic Oxygenation of Heterostilbenes—Batch versus Microflow Reactor
by Milena Mlakić, Anita Šalić, Matea Bačić, Bruno Zelić, Ivana Šagud, Ottó Horváth and Irena Škorić
Catalysts 2021, 11(3), 395; https://doi.org/10.3390/catal11030395 - 20 Mar 2021
Cited by 6 | Viewed by 2640
Abstract
On the basis of earlier results with furan and thiophene derivatives of benzobicyclo[3.2.1]octadiene, photocatalytic oxygenation of novel furo- and thieno heterostilbenes with water-soluble manganese(III) porphyrins offered suitable possibilities to study their reactivities and reaction pathways depending on the heteroatom and the catalyst charge. [...] Read more.
On the basis of earlier results with furan and thiophene derivatives of benzobicyclo[3.2.1]octadiene, photocatalytic oxygenation of novel furo- and thieno heterostilbenes with water-soluble manganese(III) porphyrins offered suitable possibilities to study their reactivities and reaction pathways depending on the heteroatom and the catalyst charge. The experiments were carried out in two reactors types (batch and microflow) to investigate the geometric effects. NMR spectroscopy, GC, and UPLC/MS analyses were applied for identification and quantification of the products. As our results indicated, the 2-thienyl and the common p-tolyl groups in the starting compounds remained intact due to their stronger aromaticity. Hence, the thieno derivative underwent oxygenation only at the open-chain part of the molecule, and the rates of its reactions were much lower than those of the furyl analogue. The less stable furan ring was easily oxygenated, its products with highest ratios were 2-furanon derivatives. Epoxide formation occurred at the open-chain parts of both substrates preferably by the anionic catalyst. Nevertheless, the conversion rates of the substrates were higher with the cationic porphyrin, according to electrophilic attacks by photogenerated Mn(V)=O species. Additionally, the reactions were significantly faster in microflow reactors due to the more favorable circumstances of mass transfer, diffusion, and light penetration. Full article
(This article belongs to the Special Issue Photocatalytic Synthesis)
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Review

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38 pages, 3393 KiB  
Review
Visible-Light Photocatalysts and Their Perspectives for Building Photocatalytic Membrane Reactors for Various Liquid Phase Chemical Conversions
by Raffaele Molinari, Cristina Lavorato and Pietro Argurio
Catalysts 2020, 10(11), 1334; https://doi.org/10.3390/catal10111334 - 17 Nov 2020
Cited by 61 | Viewed by 6081
Abstract
Photocatalytic organic synthesis/conversions and water treatment under visible light are a challenging task to use renewable energy in chemical transformations. In this review a brief overview on the mainly employed visible light photocatalysts and a discussion on the problems and advantages of Vis-light [...] Read more.
Photocatalytic organic synthesis/conversions and water treatment under visible light are a challenging task to use renewable energy in chemical transformations. In this review a brief overview on the mainly employed visible light photocatalysts and a discussion on the problems and advantages of Vis-light versus UV-light irradiation is reported. Visible light photocatalysts in the photocatalytic conversion of CO2, conversion of acetophenone to phenylethanol, hydrogenation of nitro compounds, oxidation of cyclohexane, synthesis of vanillin and phenol, as well as hydrogen production and water treatment are discussed. Some applications of these photocatalysts in photocatalytic membrane reactors (PMRs) for carrying out organic synthesis, conversion and/or degradation of organic pollutants are reported. The described cases show that PMRs represent a promising green technology that could shift on applications of industrial interest using visible light (from Sun) active photocatalysts. Full article
(This article belongs to the Special Issue Photocatalytic Synthesis)
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