Special Issue "Recent Advances in TiO2 Photocatalysts"

A special issue of Catalysts (ISSN 2073-4344).

Deadline for manuscript submissions: 29 February 2020.

Special Issue Editors

Guest Editor
Prof. Dr. Marta Gmurek Website E-Mail
Lodz University of Technology Faculty of Process and Environmental Engineering, Lodz, Poland
Interests: Scientific: photochemistry, water and wastewater treatment, advanced oxidation processes, photodegradation, disinfection, solar disinfection, toxicity, mass spectroscopy, reactions of reactive oxygen species
Guest Editor
Dr. Anna Malankowska Website E-Mail
University of Gdansk Faculty of Chemistry, Gdansk, Poland
Interests: heterogeneous photocatalysis, environmental remediation technologies, nanotechnology, nanomaterials, nanobiomedicine, environmental protection, synthesis of quantum dots, metallic and semiconductors nanoparticles
Guest Editor
Prof. Dr. Rui C. Martins Website E-Mail
University of Coimbra Faculty of Sciences and Technology, Coimbra, Portugal
Interests: chemical reaction engineering, effluents treatment, advanced oxidation processes, ozonation and photocatalytic ozonation, ecotoxicology and environmental chemistry, product recovery
Guest Editor
Dr. Ewa Borowska Website E-Mail
Karlsruhe Institute of Technology Engler-Bunte-Institut, Water Chemistry and Water Technology, Karlsruhe, Germany
Interests: fate of micropollutants in aquatic environment, solar-driven degradation processes, identification of transformation products, wastewater treatment using photochemical processes

Special Issue Information

Dear Colleagues,

Chemical processes, such as advanced oxidation processes (AOPs), receive a lot of attention with respect to their application for water treatment purposes. Among these processes, semiconductor photocatalysis, especially with titanium dioxide (TiO2), has been studied in detail, also with regard to the elimination of selected micropollutants in water. This inexpensive, stable and non-toxic catalyst provides very good removal efficiencies. TiO2 photocatalysts have a great potential for application in the decontamination of wastewater, exhaust gases and disinfection. High-efficiency TiO2-based photocatalysts are also successfully used in photocatalytic water splitting and photoconversion, providing low cost and environmentally-friendly production of clean fuels. However, due to the energy band gap, the practicality of natural solar light employment is limited. Nowadays, the application of visible light in TiO2 photocatalysis is the main goal of research.

This Special Issue aims to report on recent progress and developments in methods promoting the visible light photocatalytic activity of TiO2, including metal and non-metal doping, surface deposition of noble metals, semiconductor coupling, and dye sensitizing. Furthermore, research into understanding the mechanism of photocatalysis, photocatalytic ozonation, as well as the photoconversion and water splitting will be important subjects for this Special Issue.

Prof. Dr. Marta Gmurek
Dr. Anna Malankowska
Prof. Dr. Rui C. Martins
Dr. Ewa Borowska
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 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. 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 1600 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

  • homogeneous and heterogeneous photocatalysis
  • photocatalytic ozonation
  • visible light application
  • mechanism investigation
  • structure modification
  • structure characterization
  • water splitting
  • hydrogen production
  • photoconversion

Published Papers (1 paper)

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Research

Open AccessArticle
Solar Photocatalytic Degradation of Sulfamethoxazole by TiO2 Modified with Noble Metals
Catalysts 2019, 9(6), 500; https://doi.org/10.3390/catal9060500 - 30 May 2019
Cited by 1
Abstract
Application of solar photocatalysis for water treatment is intensively studied. In this work, we investigated TiO2 modified with platinum (Pt/TiO2) and palladium (Pd/TiO2) using sulfamethoxazole (SMX) as the model contaminant. We considered the following parameters: (i) level of [...] Read more.
Application of solar photocatalysis for water treatment is intensively studied. In this work, we investigated TiO2 modified with platinum (Pt/TiO2) and palladium (Pd/TiO2) using sulfamethoxazole (SMX) as the model contaminant. We considered the following parameters: (i) level of TiO2 modification with Pt/Pd, (ii) initial concentration of photocatalysts, (iii) geographic location where processes were conducted, and (iv) natural water matrix. The catalysts characterized by SEM, EDX, DRS, and XRD techniques showed successful deposition of Pd and Pt atoms on TiO2 surface that enabled light absorption in the visible (Vis) range, and therefore caused efficient SMX removal in all tested conditions. A comparison of the rate constants of SMX degradation in various conditions revealed that modification with Pd gave better results than modification with Pt, which was explained by the better optical properties of Pd/TiO2. The removal of SMX was higher with Pd/TiO2 than with Pt/TiO2, independent of the modification level. In the experiments with the same modification level, similar rate constants were achieved when four times the lower concentration of Pd/TiO2 was used as compared with Pt/TiO2. Formation of four SMX transformation products was confirmed, in which both amine groups are involved in photocatalytic oxidation. No toxic effect of post-reaction solutions towards Lepidium sativum was observed. Full article
(This article belongs to the Special Issue Recent Advances in TiO2 Photocatalysts)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Catalyst Selection for Industrial Textile Wastewater Ozone Treatment

Author: Lucyna Bilińska 1,*, Kazimierz Blus 1, Marta Gmurek 2 and Stanisław Ledakowicz 2

1   Bilinski Factory Of Colour, Mickiewicza 29, 95-050 Konstantynow Lodzki, Poland; [email protected]

2   Faculty of Process & Environmental Engineering, Lodz University of Technology, Wolczanska 213, 90-924 Lodz, Poland; [email protected]

*   Correspondence: [email protected]; Tel.: +48-211-05-02 (L.B.)

Abstract: Catalytic ozonation has appeared as one of the recent trends in textile wastewater treatment. The necessity of effective color removal in short treatment time is a standard when an industrial implementation is planned. At the same time, efficient COD and toxic by-products removal are highly expected. This study presents the results of an ozone treatment supported by three types of catalysts. A metal oxide (TiO2 as P-25 by Degussa), activated carbon (nano-powder by Sigma, AC) and metal particles (platinum, 1% wt. supported on AC matrix by Sigma, Pt-AC). The values of pseudo-first order constants of Reactive Black 5 (RB5) decolorization rate for catalytic ozonation with AC addition were between 0.039 ± 0.001 and 0.121 ± 0.001 min-1 (for pH in the range of 2 - 12). These values were transparently higher than corresponding values of single ozone treatment. Despite, the catalytic effect of AC was shown for the model wastewater (the RB5 solution), the real industrial wastewater revealed opposite behavior. The experiment ran for industrial wastewater, exposed a lack of catalytic action of every investigated catalyst. Additionally, the catalytic effect was not visible in COD removal. Based on these observations, a new mechanism of catalytic ozonation of textile wastewater was proposed.

Keywords: catalytic ozonation; textile wastewater; TiO2; activated carbon; platinum

 

Title: TiO2 Modified with Metal Sulphides for the Photocatalytic Degradation of Toluene in the Gas Phase

Author: Anna Malankowska

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