1. Clean Technologies laboratory
2. Facultad de Ingeniería
3. Universidad Católica de la Santísima Concepción
4. Concepción
5. Chile
6. Advanced Ceramics and Nanotechnology Laboratory
7. Department of Materials Engineering
8. University of Concepcion
9. Concepcion
10. Department of Botany & Microbiology
11. College of Science
12. King Saud University
13. Riyadh 11451
14. Saudi Arabia
15. Nanomaterials and Solar Energy Conversion Lab
16. Department of Chemistry
17. National Institute of Technology
18. Tiruchirappalli-620 015
19. India