Effect of sulfate ions on the crystallization and photocatalytic activity of TiO2/diatomite composite photocatalyst

- TiO2/diatomite composite was synthesized by hydrolysis deposition method.
- Methylene blue was used to evaluate the photocatalytic effect of composite.
- Sulfate ions have a significant effect on the crystal transformation of TiO2.
- The SO42− ions can help to improve the photocatalytic activity of the composite.