Question

What are all the properties for a good photocatalyst?

Answer 1

Properties of a good photocatalyst

This report covered several properties of the photocatalyst. This section states a list of

properties we think that are important to create a good photocatalyst for water splitting.

• The bandgap should be between 2.43 eV and 3.2 eV

• The valence band should be lower than the oxygen oxidation potential

• The conduction band should be higher than the hydrogen reduction potential

• The aid of a co-catalyst for hydrogen generation is necessary

• The photocatalyst must be able to split water in protons and hydroxyl anions

• The generation of water from molecular oxygen and hydrogen must be reduced

• Electron transport to the surface is necessary

Ref: Fudnamentals of photocatalytic water spliting by visbile light

J.F.M. Oudenhoven, F.J.E. Scheijen and M.Wolffs

Chemistry of Catalytic System 2: Photocatalysis;