Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.3
3.9
Journals
Catalysts
Special Issues
TiO2-Based Materials for (Photo)Catalysis II
share announcement

TiO2-Based Materials for (Photo)Catalysis II

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

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 3663

Special Issue Editors

Dr. Giuseppina Pinuccia Cerrato

E-Mail Website
Guest Editor
Associate Professor, Department of Chemistry, Università degli Studi di Torino, Via Pietro Giuria, 7, 10125 Torino, Italy
Interests: oxide-based materials for (photo)catalysis; standard and innovative synthetic procedures; physicochemical characterization
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Claudia Letizia Bianchi

E-Mail Website1 Website2
Guest Editor
Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milano, Italy
Interests: process intensification; photocatalysis; ultrasound; advanced materials synthesis; gas and liquid phase reactors
Special Issues, Collections and Topics in MDPI journals
Dr. Lorenzo Mino

E-Mail Website
Guest Editor
Department of Chemistry, University of Torino, Torino, Italy
Interests: surface science; photocatalysis; oxide nanomaterials; in situ/operando spectroscopy; synchrotron radiation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is a continuation of the previous Special Issue “TiO2-Based Materials for (Photo)Catalysis”.

In recent years, oxide-based photocatalysts have emerged as crucial materials to face environmental and energy issues. The photocatalytic process involves the creation of electron/hole pairs and their subsequent transfer to the particle surface to perform the desired reduction and oxidation processes. The key requirement to obtain efficient photocatalysts is to engineer the band edge positions to produce the appropriate redox species and to efficiently absorb solar radiation. In this context, different approaches have been proposed, including doping with metal impurities or nonmetal atoms, preparation of oxygen-deficient oxide materials, and coupling with narrow band gap semiconductors. Shape engineering is also emerging as an additional strategy to finely tune the physicochemical properties of photocatalytic materials to optimize surface reactivity and selectivity.

The present Special Issue of Catalysts aims to showcase the current state of the art in the synthesis, characterization, and modeling of oxide-based materials employed in advanced photocatalytic applications, including CO2 reduction, water splitting, and environmental remediation.

Dr. Giuseppina Pinuccia Cerrato
Prof. Dr. Claudia Letizia Bianchi
Dr. Lorenzo Mino
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

  • doped oxide photocatalysts
  • shape-engineered oxide particles
  • plasmonic oxide photocatalysts
  • band gap engineering
  • multiscale modeling
  • photocatalytic reaction mechanisms
  • photocatalytic water-splitting
  • air treatment
  • pollutants photodegradation
  • artificial photosynthesis

Related Special Issues

Published Papers (2 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

19 pages, 6037 KiB  
Article
Photocatalytic Degradation of Paracetamol under Simulated Sunlight by Four TiO2 Commercial Powders: An Insight into the Performance of Two Sub-Micrometric Anatase and Rutile Powders and a Nanometric Brookite Powder
by Nicola Blangetti, Francesca S. Freyria, Maria Chiara Calviello, Nicoletta Ditaranto, Salvatore Guastella and Barbara Bonelli
Catalysts 2023, 13(2), 434; https://doi.org/10.3390/catal13020434 - 17 Feb 2023
Cited by 7 | Viewed by 1825
Abstract
The photocatalytic degradation of the emerging contaminant paracetamol in aqueous solution has been studied under 1 SUN (~1000 W m−2) in the presence of four commercial TiO2 powders, namely sub-micrometric anatase and rutile, and nanometric brookite and P25 (the popular [...] Read more.
The photocatalytic degradation of the emerging contaminant paracetamol in aqueous solution has been studied under 1 SUN (~1000 W m−2) in the presence of four commercial TiO2 powders, namely sub-micrometric anatase and rutile, and nanometric brookite and P25 (the popular anatase/rutile mixture used as a benchmark in most papers). The rutile powder showed low activity, whereas, interestingly, the anatase and the brookite powders outperformed P25 in terms of total paracetamol conversion to carboxylic acids, which, according to the literature, are the final products of its degradation. To explain such results, the physicochemical properties of the powders were studied by applying a multi-technique approach. Among the physicochemical properties usually affecting the photocatalytic performance of TiO2, the presence of some surface impurities likely deriving from K3PO4 (used as crystallization agent) was found to significantly affect the percentage of paracetamol degradation obtained with the sub-micrometric anatase powder. To confirm the role of phosphate, a sample of anatase, obtained by a lab synthesis procedure and having a “clean” surface, was used as a control, though characterized by nanometric particles and higher surface area. The sample was less active than the commercial anatase, but it was more active after impregnation with K3PO4. Conversely, the presence of Cl at the surface of the rutile did not sizably affect the (overall poor) photocatalytic activity of the powder. The remarkable photocatalytic activity of the brookite nanometric powder was ascribed to a combination of several physicochemical properties, including its band structure and nanoparticles size. Full article
(This article belongs to the Special Issue TiO2-Based Materials for (Photo)Catalysis II)
►▼ Show Figures

Graphical abstract

10 pages, 2430 KiB  
Article
Enhanced Photocatalytic Kinetics Using HDTMA Coated TiO2-Smectite Composite for the Oxidation of Diclofenac under Solar Light
by Imen Fellah, Ridha Djellabi, Hédi Ben Amor, Noureddine Hamdi, Marcela Frias Ordonez and Claudia L. Bianchi
Catalysts 2023, 13(1), 51; https://doi.org/10.3390/catal13010051 - 27 Dec 2022
Cited by 3 | Viewed by 1385
Abstract
Slow kinetics is one of the capital issues of photocatalytic technology because of its heterogeneous nature, which involves multi-step processes. Herein, we show that the simple modification of the sol-gel-based TiO2-smectite composite by hexadecyltrimethylammonium bromide (HDTMA) significantly boosts adsorption and photocatalytic [...] Read more.
Slow kinetics is one of the capital issues of photocatalytic technology because of its heterogeneous nature, which involves multi-step processes. Herein, we show that the simple modification of the sol-gel-based TiO2-smectite composite by hexadecyltrimethylammonium bromide (HDTMA) significantly boosts adsorption and photocatalytic efficient sol-gel-based light towards the removal of diclofenac from water. Three photocatalysts were prepared, including TiO2, TiO2-smectite, and HDTMA-TiO2-smectite. The materials were characterized to understand the surface interaction and crystal characteristics. In terms of photoactivity, it was found that the addition of HDTMA to TiO2-smectite improved the removal rate by twice. HDTMA changes the functional groups to TiO2-smectite composite allowing enhanced adsorption and photoactivity through the so-called Adsorb and Shuttle process. The recycling tests show that HDTMA-TiO2-smectite can be used up to four times with good performance. This modification approach could intensify the removal of pollutants from water instead of using complicated and costly techniques. Full article
(This article belongs to the Special Issue TiO2-Based Materials for (Photo)Catalysis II)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop