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Advanced Science and Technology of Nano-Photocatalytic Materials
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Advanced Science and Technology of Nano-Photocatalytic Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Nanomaterials and Nanotechnology".

Deadline for manuscript submissions: 10 June 2025 | Viewed by 1522

Special Issue Editor

Prof. Dr. Tobias Schnabel

E-Mail Website
Guest Editor
Engineering Department, Hof University of Applied Science, Alfons-Goppel Platz 1, 95028 Hof, Germany
Interests: water treatment; degradation; organic pollutants; photocatalysts; hydroxyl radical; oxidation

Special Issue Information

Dear Colleagues,

This Special Issue, titled “Advanced Science and Technology of Nano-Photocatalytic Materials”, addresses the environmental technologies and energy technology systems used for the purification of air, water, and the production of green energy and hydrogen with nanoscale photocatalytic materials. The areas of nanoscale-mixed oxide catalysts and innovative coating technologies for fixing materials are of particular importance here. The content of manuscripts submitted to this Special Issue should range from material synthesis and photochemical and physical material characterization to application studies using quantitative methods. Manuscripts which focus on bandgap engineering for the increased utilization of sunlight and direct electrical energy generation by photo-electrochemical cells based on nanomaterials are also welcome to be submitted.

Prof. Dr. Tobias Schnabel
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. Materials is an international peer-reviewed open access semimonthly 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 2600 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

  • photocatalysts
  • nanostructures
  • band gap engineering
  • photo-electrochemical cells
  • photocatalytic hydrogen evolution
  • water contamination
  • air purification

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Published Papers (2 papers)

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Research

11 pages, 3471 KiB  
Article
Investigation of the Effect of Oxide Additives on the Band Gap and Photocatalytic Efficiency of TiO2 as a Fixed Film
by Mabrouka Ghiloufi, Tobias Schnabel, Simon Mehling and Salah Kouass
Materials 2024, 17(18), 4671; https://doi.org/10.3390/ma17184671 - 23 Sep 2024
Viewed by 559
Abstract
The effects of various additives (Y2O3, Ga2O3, and WO3) on photocatalytic degradation efficiency under UV light-emitting diodes (LEDs) and the optical properties of TiO2 Degussa P25 were investigated using ketoprofen and diclofenac, [...] Read more.
The effects of various additives (Y2O3, Ga2O3, and WO3) on photocatalytic degradation efficiency under UV light-emitting diodes (LEDs) and the optical properties of TiO2 Degussa P25 were investigated using ketoprofen and diclofenac, two non-steroidal anti-inflammatory drugs commonly detected in German rivers. Experimental results demonstrated that thin films containing these additives exhibited similar photocatalytic degradation efficiencies as pure TiO2, achieving a 30% degradation of ketoprofen over 150 min. In contrast, the Y2O3/TiO2 thin film showed significantly improved performance, achieving a 46% degradation of ketoprofen in 180 min. Notably, the Y2O3/TiO2 system was three times more effective in degrading diclofenac compared to pure TiO2. Additionally, the Y2O3/TiO2 photocatalyst retained its activity over three successive cycles with only a slight decrease in efficiency. The photocatalytic degradation of both organic pollutants followed first-order kinetics with all photocatalysts. The investigation included SEM imaging to assess the surface homogeneity of the thin films and UV-vis solid-state spectroscopy to evaluate the impact of the additives on the energy band gap of TiO2. Full article
(This article belongs to the Special Issue Advanced Science and Technology of Nano-Photocatalytic Materials)
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13 pages, 4169 KiB  
Article
Synergistic Enhancement of Electron Dynamics and Optical Properties in Zeolitic Imidazolate Framework-8-Derived Zinc Oxide via Surface Plasmon Resonance Effects of Silver Nanoparticles under UV Irradiation
by Jaewon Lee and Byoung-Nam Park
Materials 2024, 17(13), 3193; https://doi.org/10.3390/ma17133193 - 29 Jun 2024
Viewed by 735
Abstract
This study investigates the surface plasmon resonance (SPR)-induced UV photoresponse of zinc oxide (ZnO) derived from zeolitic imidazolate framework-8 (ZIF-8) to assess the influence of silver nanoparticles (Ag NPs) on the photoresponse behavior of metal–organic framework (MOF)-derived ZnO. The initial synthesis involved a [...] Read more.
This study investigates the surface plasmon resonance (SPR)-induced UV photoresponse of zinc oxide (ZnO) derived from zeolitic imidazolate framework-8 (ZIF-8) to assess the influence of silver nanoparticles (Ag NPs) on the photoresponse behavior of metal–organic framework (MOF)-derived ZnO. The initial synthesis involved a thermal treatment in air to convert ZIF-8 into ZnO. We noted enhanced optical absorption both in the UV and visible spectra with the deposition of Ag NPs onto the ZIF-8-derived ZnO. Additionally, the presence of Ag NPs in the ZnO resulted in a substantial increase in current, even without any light exposure. This increase is attributed to the transfer of electrons from the Ag NPs to the ZnO. Photocurrent measurements under UV illumination revealed that the photocurrent with Ag NPs was significantly higher—by two orders of magnitude—compared with that without Ag NPs. This demonstrates that SPR-induced absorption markedly boosted the photocurrent, although the current rise and decay time constants remained comparable to those observed with ZnO alone. Although Ag NPs contribute electrons to ZnO, creating a “pre-doping” effect that heightens baseline conductivity (even in the absence of light), this does not necessarily alter the recombination dynamics of the photogenerated carriers, as indicated by the similar rise and decay time constants. The electron transfer from Ag to ZnO increases the density of charge carriers but does not significantly influence their recombination. Full article
(This article belongs to the Special Issue Advanced Science and Technology of Nano-Photocatalytic Materials)
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