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Catalysts
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State-of-the-Art of Heterostructured Photocatalysts
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State-of-the-Art of Heterostructured Photocatalysts

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

Deadline for manuscript submissions: 30 June 2025 | Viewed by 2872

Special Issue Editor

Prof. Dr. Raphaël Schneider

E-Mail Website
Guest Editor
LRGP, CNRS, Université de Lorraine, F-54000 Nancy, France
Interests: catalysis; quantum dots; imaging; sensing; ZnO films; metal organic frameworks
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, semiconductor-mediated photocatalysis has received notable attention due to the high value of this process, both for the development of renewable energy technologies and for environmental remediation. To decrease charge carrier recombination and increase the visible-light absorption of photocatalysts, numerous strategies have been developed, among which heterojunctions are the most investigated. This Special Issue will highlight recent advancements made in heterostructured photocatalysts and the various related mechanisms (type-I or type-II heterojunctions, p-n heterojunctions, S-schemes, Z-schemes, p-n heterojunctions, etc.) to improve photocatalytic performance.

Prof. Dr. Raphaël Schneider
Guest Editor

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 2200 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

  • heterojunctions
  • type-I or type-II heterojunctions
  • p-n heterojunction
  • S-scheme
  • Z-scheme
  • p-n heterojunctions

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Published Papers (2 papers)

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Research

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17 pages, 3272 KiB  
Article
ITO-TiO2 Heterojunctions on Glass Substrates for Photocatalytic Gold Growth Along Pattern Edges
by Fatemeh Abshari, Moritz Paulsen, Salih Veziroglu, Alexander Vahl and Martina Gerken
Catalysts 2024, 14(12), 940; https://doi.org/10.3390/catal14120940 - 19 Dec 2024
Viewed by 735
Abstract
This study investigates the effects of varying indium tin oxide (ITO) layer thicknesses and the patterning of the ITO layer on the growth of metallic gold (Au) nano- and microstructures on titanium dioxide (TiO2) templates. The ITO-TiO2 heterojunction serves to [...] Read more.
This study investigates the effects of varying indium tin oxide (ITO) layer thicknesses and the patterning of the ITO layer on the growth of metallic gold (Au) nano- and microstructures on titanium dioxide (TiO2) templates. The ITO-TiO2 heterojunction serves to collect photogenerated electrons in the ITO sublayer, facilitating their transport to the pattern edges and concentrating photocatalytic activity at these edges. Six template types were fabricated on glass substrates, with systematic variations in ITO thickness (0, 3, 6, 10, and 30 nm) and different ITO patterning methods (either continuous or patterned with the TiO2 layer). Photocatalytic gold growth was carried out on each of the substrates, and morphological analysis was conducted using scanning electron microscopy (SEM). Results showed that a 6 nm ITO layer beneath a 70 nm TiO2 layer yielded the most uniform gold lines, characterized by 3D flower-shaped structures and enhanced edge growth. Conductance measurements indicated a value of 23 mS, suggesting potential applications in bio-inspired electronics. These findings provide insights into optimizing gold structure growth for advanced neuromorphic devices. Full article
(This article belongs to the Special Issue State-of-the-Art of Heterostructured Photocatalysts)
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Review

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52 pages, 1814 KiB  
Review
An Overview of the Advantages of Combining Photo- and Electrooxidation Processes in Actual Wastewater Treatment
by Laura Valenzuela, Beatriz Villajos, Sara Mesa Medina and Marisol Faraldos
Catalysts 2025, 15(1), 14; https://doi.org/10.3390/catal15010014 - 27 Dec 2024
Cited by 1 | Viewed by 1579
Abstract
The elimination of pollutants in real water and wastewater is a challenge for the successful application of electrooxidation processes (EOPs). The presence of inorganic salts in the reaction medium is of great relevance during EOPs, with active participation in the electrochemical reactions. A [...] Read more.
The elimination of pollutants in real water and wastewater is a challenge for the successful application of electrooxidation processes (EOPs). The presence of inorganic salts in the reaction medium is of great relevance during EOPs, with active participation in the electrochemical reactions. A revision of the reported devices used in the decontamination and disinfection of real wastewater demonstrated the main drawbacks of efficiently removing pollutants. However, the combination of photocatalytic processes with electrochemical technologies has been explored to improve overall efficiency and reduce energy consumption. A wide variety of materials, mainly metals, polymers, carbon and graphite derivatives, oxides, and MOFs, as well as their combinations, have been applied to electrodes and photoactive coatings. The deposition of the active layer has been enriched with novel designs, including porous hierarchical growth and 3D printing. The use of powerful characterization techniques allows for the study of the composition, structure, surface, and photo- and electrochemical performance of the fabricated electrodes. The simultaneous optimization of the operating conditions, parameters, and reactors must be specifically defined according to each water matrix. This approach will increase the efficiency of the whole process and contribute to cost savings. Economic contributions have been revised to calculate the cost of wastewater treatment. Full article
(This article belongs to the Special Issue State-of-the-Art of Heterostructured Photocatalysts)
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