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Related Concept Videos

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
Catalysis01:27

Catalysis

Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...
Catalysis02:50

Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.

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Related Experiment Video

Updated: Jun 27, 2026

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
12:47

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition

Published on: May 2, 2014

Heterogeneous photocatalyst materials for water splitting.

Akihiko Kudo1, Yugo Miseki

  • 1Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Tokyo 162-1861, Japan. a-kudo@rs.kagu.tus.ac.jp

Chemical Society Reviews
|December 18, 2008
PubMed
Summary
This summary is machine-generated.

This review explores photocatalyst materials for splitting water into hydrogen and oxygen. Advances in oxides, sulfides, and nitrides offer pathways for clean solar hydrogen production, addressing energy and environmental challenges.

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Last Updated: Jun 27, 2026

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
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Published on: May 2, 2014

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Area of Science:

  • Materials Science
  • Chemistry
  • Renewable Energy

Background:

  • Photocatalytic water splitting is a key process for sustainable hydrogen production.
  • Developing efficient and stable photocatalysts is crucial for solar fuel generation.

Purpose of the Study:

  • To review the fundamentals of photocatalytic water splitting.
  • To survey heterogeneous photocatalyst materials for H2 and O2 evolution.
  • To highlight factors influencing photocatalyst performance and material design.

Main Methods:

  • Literature review of photocatalyst materials.
  • Analysis of oxides, (oxy)sulfides, and (oxy)nitrides.
  • Examination of experimental conditions for water splitting.

Main Results:

  • Numerous metal oxides (d0, d10), sulfides, and nitrides show promise.
  • Recent decades have seen significant advancements in photocatalyst development.
  • Understanding material properties is key to improving efficiency.

Conclusions:

  • Photocatalytic water splitting offers a clean route to solar hydrogen.
  • Abundant materials and sacrificial reagents can enable sustainable hydrogen production.
  • This field is vital for future energy and environmental solutions.