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

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