Special Issue "Novel Photocatalysts for Environmental and Energy Applications"

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

Deadline for manuscript submissions: 10 December 2021.

Special Issue Editors

Prof. Dr. Dionysios (Dion) Demetriou Dionysiou
grade E-Mail Website
Guest Editor
Department of Biomedical, Chemical and Environmental Engineering (DBCEE), University of Cincinnati, Cincinnati, OH 45221-0012, USA
Interests: advanced oxidation technologies and chemical oxidation for water treatment; drinking water treatment and purification; environmental nanotechnology; transition-metal oxidation and reverse electron transfer reactions; the use of ionic liquids in environmental applications; destruction of biological toxins in water; physicochemical phenomena on particle-water interfaces
Special Issues and Collections in MDPI journals
Dr. Sami Rtimi
E-Mail Website
Guest Editor
Swiss Federal Institute of Technology Lausanne (EPFL), 1015 Lausanne, Switzerland
Interests: photocatalysis; supported catalysts; antibacterial; self-cleaning; characterization
Special Issues and Collections in MDPI journals
Prof. Dr. Ewa Kowalska
E-Mail Website
Guest Editor
Institute for Catalysis (ICAT), Hokkaido University, Sapporo, Hokkaido 060-0808, Japan
Interests: heterogeneous photocatalysis; environmental protection; nano- and micro- materials; advanced oxidation processes (AOPs); materials science; plasmonic photocatalysts; vis-responsive materials; solar energy conversion
Special Issues and Collections in MDPI journals
Dr. Changseok Han
E-Mail Website
Guest Editor
Department of Environmental Engineering, INHA University, Incheon 22212, Korea
Interests: advanced oxidation processes; photocatalysis; toxins; contaminants of emerging concern; nutrients recovery; water treatment
Special Issues and Collections in MDPI journals
Dr. Marcin Janczarek
E-Mail Website
Guest Editor
Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland
Interests: photocatalysis, nanomaterials, faceted nanoparticles, solar energy, advanced oxidation technologies
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

Due to exponential industrialization and rapid population growth, the global energy crisis and environmental pollution have become two of the greatest humanitarian challenges of the 21st century. The utilization of powerful, affordable, and renewable energy sources for energy production and pollutant elimination is considered as the best solution for addressing these critical problems. Therefore, much effort has been devoted toward converting solar energy into an applicable energy medium through various technologies, including photocatalysis, solar cells, and photoelectrochemical cells.

Furthermore, the ever-rising demand for fossil fuels, concomitant with the collateral increase in atmospheric CO2 concentrations, have necessitated the urgent development of carbon management technologies. To this end, much research has been devoted towards the search for new technologies in the reduction of CO2. Moreover, numerous topics within the fields of bioconversion and catalysis/photocatalysis (photothermal catalysis) have also been investigated.

The current environmental and energy issues require the urgent design, preparation, and validation of well-designed photocatalytic materials. Thanks to their ability to use light/sunlight, these catalysts are able to stimulate various reactions and/or produce energy. Mimicking the natural photosynthesis system, Z-scheme photocatalysts, as one example, were reported to present many merits, including improved light harvesting, spatially separated reductive and oxidative active sites, and well-preserved strong redox ability. The first generation of Z-scheme photocatalysts can be summarized in the liquid-phase Z-scheme, and have evolved up to the direct Z-scheme photocatalysts. Many other novel functional and composite catalysts are being developed and tested in various environmental and energy applications. While there are still challenges facing further scalability and the applicability of associated technologies for practical and large-scale implementation, there is clear evidence of progress in the development of new catalysts with improved performance and functionality, as well as understanding of the underlying catalytic and photocatalytic phenomena and their associated mechanisms. However, there are certainly many opportunities in the design of new catalysts with improved performance, tailored functionalities, and use in various existing and new applications.

This Special Issue “Novel Photocatalysts for Environmental and Energy Applications” covers the design, preparation, and characterization of novel photocatalytic materials, as well as their applications in environmental remediation and novel routes for energy production. This Special Issue welcomes contributions on (but not limited to):

  • Photocatalysts for environmental application and energy conversion;
  • Photoactive materials for energy conversion;
  • Z-scheme photocatalysts;
  • Hybrid materials for visible/solar light harvesting;
  • Photocatalysts for water splitting;
  • Functional materials for carbon dioxide capture and conversion;
  • Photocatalytic self-cleaning surfaces;
  • Photocatalysts with antimicrobial properties, including antibiotic resistance;
  • Photocatalytic applications in medical and biomedical fields;
  • Photocatalytic materials for water and wastewater purification and reuse;
  • Photocatalysts for air treatment and industrial gas phase streams;
  • Photocatalytic materials in food preservation;
  • Photocatalytic application in non-conventional environments (i.e., space exploration).

Prof. Dionysios (Dion) Demetriou Dionysiou
Dr. Sami Rtimi
Prof. Ewa Kowalska
Prof. Changseok Han
Dr. Marcin Janczarek
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 2000 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 materials
  • preparation methods
  • mechanistic aspects
  • structure–reactivity
  • energy conversion
  • environmental applications
  • water treatment
  • disinfection, antimicrobial

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Jump to: Review

Article
Towards Computer-Aided Graphene Covered TiO2-Cu/(CuxOy) Composite Design for the Purpose of Photoinduced Hydrogen Evolution
Catalysts 2021, 11(6), 698; https://doi.org/10.3390/catal11060698 - 31 May 2021
Viewed by 609
Abstract
In search a hydrogen source, we synthesized TiO2-Cu-graphene composite photocatalyst for hydrogen evolution. The catalyst is a new and unique material as it consists of copper-decorated TiO2 particles covered tightly in graphene and obtained in a fluidized bed reactor. Both, [...] Read more.
In search a hydrogen source, we synthesized TiO2-Cu-graphene composite photocatalyst for hydrogen evolution. The catalyst is a new and unique material as it consists of copper-decorated TiO2 particles covered tightly in graphene and obtained in a fluidized bed reactor. Both, reduction of copper from Cu(CH3COO) at the surface of TiO2 particles and covering of TiO2-Cu in graphene thin layer by Chemical Vapour Deposition (CVD) were performed subsequently in the flow reactor by manipulating the gas composition. Obtained photocatalysts were tested in regard to hydrogen generation from photo-induced water conversion with methanol as sacrificial agent. The hydrogen generation rate for the most active sample reached 2296.27 µmol H2 h−1 gcat−1. Combining experimental and computational approaches enabled to define the optimum combination of the synthesis parameters resulting in the highest photocatalytic activity for water splitting for green hydrogen production. The results indicate that the major factor affecting hydrogen production is temperature of the TiO2-Cu-graphene composite synthesis which in turn is inversely correlated to photoactivity. Full article
(This article belongs to the Special Issue Novel Photocatalysts for Environmental and Energy Applications)
Show Figures

Figure 1

Review

Jump to: Research

Review
Recent Progress in Plasmonic Hybrid Photocatalysis for CO2 Photoreduction and C–C Coupling Reactions
Catalysts 2021, 11(2), 155; https://doi.org/10.3390/catal11020155 - 22 Jan 2021
Viewed by 684
Abstract
Plasmonic hybrid nanostructures have been investigated as attractive heterogeneous photocatalysts that can utilize sunlight to produce valuable chemicals. In particular, the efficient photoconversion of CO2 into a stable hydrocarbon with sunlight can be a promising strategy to achieve a sustainable human life [...] Read more.
Plasmonic hybrid nanostructures have been investigated as attractive heterogeneous photocatalysts that can utilize sunlight to produce valuable chemicals. In particular, the efficient photoconversion of CO2 into a stable hydrocarbon with sunlight can be a promising strategy to achieve a sustainable human life on Earth. The next step for hydrocarbons once obtained from CO2 is the carbon–carbon coupling reactions to produce a valuable chemical for energy storage or fine chemicals. For these purposes, plasmonic nanomaterials have been widely investigated as a visible-light-induced photocatalyst to achieve increased efficiency of photochemical reactions with sunlight. In this review, we discuss recent achievements involving plasmonic hybrid photocatalysts that have been investigated for CO and CO2 photoreductions to form multi-carbon products and for C–C coupling reactions, such as the Suzuki–Miyaura coupling reactions. Full article
(This article belongs to the Special Issue Novel Photocatalysts for Environmental and Energy Applications)
Show Figures

Figure 1

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: Construction of rhombic dodecahedral silver phosphate/graphene nanocomposite through a facile synthesis for enhanced photocatalytic H2 evolution
Authors: Julia Zwara, Łukasz Lewandowski, Anna Gołąbiewska, Wojciech Lisowski, Tomasz Klimczuk, Grzegorz Trykowski, Adriana Zaleska-Medynska
Affiliation: Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland
Abstract: A facile and effective pyrolysis method for the preparation of the Ag3PO4 with coated graphene (Ag3PO4-GR) visible light photocatalyst has been developed to improve the photocatalytic performance and stability of Ag3PO4. We demonstrate that the potential formed at the interface leads to prompt charge transfer from semiconductor Ag3PO4 into GR in the ground electronic state, thus improving the photoactivity and stability of the material Ag3PO4/GR. Additionally, the stability and enhancement of photocatalytic activity for hydrogen production performance could be attributed to the synergistic effect of the rhombic dodecahedral silver phosphate Ag3PO4 particles and graphene. Such as-prepared Ag3PO4-GR nanocomposites were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, DR UV-Vis spectroscopy, Raman and Fourier transform spectroscopy, XRD analysis.

Title: Effects of Reaction Temperature on the Photocatalytic Activity of TiO2 with Cocatalysts
Authors: Yu-Wen Chen
Affiliation: Department of Chemical and Materials Engineering, National Central University
Abstract: The aim of this study was to investigate the effects of Pd and Cu co-catalyst on the photocatalytic activity of TiO2. The effects of reaction temperature on these catalysts were investigated too. X-ray diffraction, specific surface and porosimetry analyzer, transmission electron microscopy, and high-resolution transmission electron microscopy were used to characterize the particle size, specific surface area, pore volume, pore size, morphology, and metal distribution of the catalysts. Methylene blue was used to test the photodegradation activity under UV light irradiation and sun light. The concentration of methylene blue in water was determined by UV/Visible/NIR spectrophotometer. The results show that the suitable metal content and calcination temperature could effectively increase the photodegradation efficiency of TiO2. The calcining temperature of 300 ℃ and the palladium and copper metal content of 0.5 wt.% had the highest photodecomposition activity among all samples. At 0-50°C reaction temperature, the activity of TiO2 and Pd/TiO2 increases with the increase of reaction temperature. But when the temperature is as high as 70°C, the reaction rate of TiO2 drops slightly, and Pd/TiO2 becomes less effective. Cu/TiO2 is more active at room temperature than the other temperatures.

Back to TopTop