Fabrication of positively and negatively charged, double-shelled, nanostructured hollow spheres for photodegradation of cationic and anionic aromatic pollutants under sunlight irradiation

- The inner and outer surfaces of the photocatalyst with positively and negatively charged.
- The ability to simultaneous degrade anionic and cationic organic pollutants.
- Improved visible light charge generation and separation of double-shelled hollow spheres.
- The inner WO3 and outer TiO2 of double-shelled hollow spheres improve the photocatalytic activity.