Photo(electro)catalysis in Energy and Environment: Theories, Experiments, and Applications

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

Deadline for manuscript submissions: closed (20 April 2025) | Viewed by 599

Special Issue Editors


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Department of Chemistry, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia
Interests: electrocatalysis; energy; photoelectrochemistry
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Guest Editor
Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
Interests: electrocatalysis; photocatalysis; molecule catalysts; carbon-carbon bond formation; porphyrin
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Special Issue Information

Dear Colleagues, 

We are delighted to invite you to contribute to a new Special Issue entitled “Photo(electro)catalysis in Energy and Environment: Theories, Experiments, and Applications”, which is dedicated to examining recent theoretical and experimental research achievements and applications regarding photoelectrocatalysis applications. The concept of photoelectrocatalysis combines electrochemistry and photocatalysis. In photoelectrocatalysis, selecting the right material is critical to obtaining charge carriers, provided the photoelectrodes absorb incident photons. In recent decades, transition metal oxides, especially TiO2-, WO3-, BiVO4-, and Fe2O3-based catalyst materials, have been widely studied in photoelectrocatalysis systems. The syntheses of these materials usually involve simple and cost-effective methods such as hydrothermal methods, co-precipitation methods, sonochemical methods, combustion methods, sol–gel methods, and solid-state methods.

The Special Issue also relates to the experimental and theoretical assessment of potential catalysts for photo/electrocatalytic reactions. It involves the synthesis, characterization, evaluation of properties, synthesis of composite materials, conversion of CO2 into value-added products, photoelectrocatalytic oxidation and reduction of pharmaceutical pollutants, and photodegradation applications. These technologies offer an optimistic approach to addressing the global energy and environmental crisis. Original research papers, short communications, and review articles are invited for submission.

Dr. Prabhakarn Arunachalam
Dr. Qiucheng Chen
Guest Editors

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Keywords

  • photoelectrocatalysts
  • material
  • molecular catalysts
  • electrocatalysis
  • photocatalysis
  • CO2 reduction

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Published Papers (1 paper)

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Research

17 pages, 6829 KiB  
Article
Titanosilicate ETS-10-Modified Cu2O for Enhanced Visible-Light Photoelectrochemical Activity
by Ewelina Szaniawska-Białas, Aleksandra Parzuch, Linh Trinh, Pavla Eliášová and Renata Solarska
Catalysts 2025, 15(4), 313; https://doi.org/10.3390/catal15040313 - 26 Mar 2025
Viewed by 321
Abstract
Copper(I) oxide (Cu2O)-based photocathodes are promising materials for carbon dioxide (CO2) reduction under visible light due to copper’s abundance and favorable energy band alignment. However, Cu2O suffers from photocorrosion and chemical instability. Here, we present a novel [...] Read more.
Copper(I) oxide (Cu2O)-based photocathodes are promising materials for carbon dioxide (CO2) reduction under visible light due to copper’s abundance and favorable energy band alignment. However, Cu2O suffers from photocorrosion and chemical instability. Here, we present a novel approach utilizing a porous titanosilicate material (ETS-10) as a protective layer for Cu2O, addressing these limitations. The Cu2O was electrodeposited and coated with a thin ETS-10 layer, which prevents photocorrosion, enhances charge separation and transfer, and facilitates CO2 capture through its highly porous structure. Comprehensive structural, compositional, and morphological analyses confirmed that ETS-10 effectively stabilized Cu2O while maintaining its electronic properties (UV–Vis, XPS). The Cu2O/ETS-10 photocathode exhibited a 25% enhancement in the photocurrent density at 0.0–0.1 V vs. RHE and significantly improved stability compared to bare Cu2O. The thin ETS-10 layer acted as a passivation layer, improving charge transfer via tunneling mechanisms. This study introduces a multicomponent photocathode system, demonstrating a new application of ETS-10 in photoelectrochemical cells. The results highlight the potential of ETS-10 to enhance the efficiency and stability of photocathodes, offering a pathway for the design of advanced systems for solar-driven CO2 reduction and artificial photosynthesis. Full article
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