Question

true or false ,ZnO can be used as a photocatalyst for hydrogen generation

Answer 1

True, ZnO can be used as a photocatalyst for hydrogen generation.

ZnO photocatalytic materials are prepared to generate hydrogen gas from the process of water splitting.

Normally, these Photocatalyst is mainly characterized by the XRD (X-ray diffraction), UV-visible spectra, transmission electron microscope (TEM) and Scanning Electron Microscope (SEM).

Answer 2

Answer:

ZnO can be used as a ‘photo-catalyst’ for hydrogen generation. It is a true statement.  

Explanation:

As the Zn metal doped with $\bold{\mathrm{TiO}_{2}}$ is used as photo-catalyst for the product of hydrogen gas in the auto-ignition method.  

Here $\bold{\mathrm{Zn}-\mathrm{Ti} \mathrm{O}_{2}}$ couple acts as the photo-catalyst and responsible for the hydrogen gas production. Since the reaction occurs in the presence of light so it is called as photo-catalyst. The reaction is initiated with the UV-light. Hence it is a true statement.