1. Division of Environmental Sciences, Instituto Potosino de Investigación Científica y Tecnológica, A.C., Camino a la Presa San José 2055, Col. Lomas
4a sección, C.P. 78216, San Luis Potosí, S.L.P., México
2. School of Engineering/Institute for Molecular
and Nanoscale Innovation (IMNI), Brown University, Providence, Rhode Island 02912, United States
3. Department of Photocatalysis and Alternative Energies, Venezuelan Institute for Scientific Research (IVIC), 20632, Caracas 1020-A, Venezuela