Special Issue "Cutting-Edge Photocatalysis"

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

Deadline for manuscript submissions: 30 November 2022 | Viewed by 303

Special Issue Editor

Dr. Natalia Martsinovich
E-Mail Website
Guest Editor
Department of Chemistry, The University of Sheffield, Sheffield, UK
Interests: theoretical and computational chemistry; surfaces and interfaces; materials for photocatalysis and solar cells

Special Issue Information

Dear Colleagues, 

Photocatalysis has attracted a great deal of interest because of the ability of photocatalysts to harvest sunlight and drive a variety of chemical reactions. Photocatalytic processes have the potential to solve a variety of environmental problems, ranging from removing pollutants from water and air, to capturing carbon dioxide and converting it to useful chemical feedstocks, and producing hydrogen—a “clean” fuel—from water. All of these processes rely on efficient and selective photocatalysts. One of the earliest photocatalysts, titanium dioxide, is still one of the most important photocatalyst materials, offering high efficiency, low cost, and the ability to tune its morphology. However, it has significant weaknesses, such as poor visible light absorption and detrimental charge recombination. The search for alternative improved photocatalysts has led to a huge amount of research into novel photocatalyst materials, such as mixed oxides, graphitic carbon nitride, polymeric and molecular photocatalysts, as well as modifications of their electronic and optical properties by doping and by control of their morphology. Composite photocatalyst systems, e.g., heterojunctions of metal oxides with efficient light absorbers such as chalcogenides, graphene and carbon nanotubes, and molecular photosensitizers, offer improved light absorption and charge separation ability and therefore result in high photocatalytic efficiencies.

This Special Issue covers experimental and theoretical research on cutting-edge photocatalysts, such as:

  • Novel photocatalyst materials;
  • Doping of photocatalyst materials;
  • Control of photocatalysts’ morphology;
  • Photocatalytic heterojunctions, e.g., Z-schemes;
  • Photocatalyst–molecular sensitizer systems;
  • Visible-light photocatalysis.

Dr. Natalia Martsinovich
Guest Editor

Manuscript Submission Information

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  • photocatalyst
  • doping
  • heterojunction
  • Z-scheme
  • photosensitizer

Published Papers (1 paper)

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Hollow Nanospheres Organized by Ultra-Small CuFe2O4/C Subunits with Efficient Photo-Fenton-like Performance for Antibiotic Degradation and Cr(VI) Reduction
Catalysts 2022, 12(7), 687; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12070687 - 23 Jun 2022
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Hollow transition metal oxides have important applications in the degradation of organic pollutants by a photo-Fenton-like process. Herein, uniform, highly dispersible hollow CuFe2O4/C nanospheres (denoted as CFO/C-PNSs) were prepared by a one-pot approach. Scanning electron microscope (SEM) and transmission [...] Read more.
Hollow transition metal oxides have important applications in the degradation of organic pollutants by a photo-Fenton-like process. Herein, uniform, highly dispersible hollow CuFe2O4/C nanospheres (denoted as CFO/C-PNSs) were prepared by a one-pot approach. Scanning electron microscope (SEM) and transmission electron microscope (TEM) images verified that the CFO/C-PNS catalyst mainly presents hollow nanosphere morphology with a diameter of 250 ± 30 nm. Surprisingly, the photodegradation test results revealed that CFO/C-PNSs had an excellent photocatalytic performance in the elimination of various organic contaminants under visible light through the efficient Fenton catalytic process. Due to the unique hollow structure formed by the assembly of ultra-small CFO/C subunits, the catalyst exposes more reaction sites, improving its photocatalytic activity. More importantly, the resulting magnetically separable CFO/C-PNSs exhibited excellent stability. Finally, the possible photocatalytic reaction mechanism of the CFO/C-PNSs was proposed, which enables us to have a clearer understanding of the photo-Fenton mechanism. Through a series of characterization and analysis of degradation behavior of CFO/C-PNS samples over antibiotic degradation and Cr(VI) reduction, •OH radicals generated from H2O2 decomposition played an essential role in enhancing the reaction efficiency. The present work offered a convenient method to fabricate hollow transition metal oxides, which provided impetus for further development in environmental and energy applications. Highlights: Novel hollow CuFe2O4/C nanospheres were prepared by a facile and cost-effective method. CuFe2O4/C exhibited excellent photo-Fenton-like performance for antibiotic degradation. Outstanding photocatalytic performance was attributed to the specific hollow cavity-porous structure. A possible mechanism for H2O2 activation over hollow CuFe2O4/C nanospheres was detailed and discussed. Full article
(This article belongs to the Special Issue Cutting-Edge Photocatalysis)
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