Enhanced photocatalytic activity and stability of alumina supported hematite for azo-dye degradation in aerated aqueous suspension

- Alumina supported hematite is much more active than bare hematite.
- This catalyst is also more active and stable than silica supported hematite.
- The particle size of hematite on the supported catalyst is obviously reduced.
- The adsorption of anionic dye on alumina-supported catalyst is notably enhanced.