1. Institute for Physical Chemical Applied Research, School of Science, University of Turabo, PO Box 3030, Gurabo, Puerto Rico, 00778-3030, USA
2. Engineering Science and Materials Department, College of Engineering, University of Puerto Rico—Mayagüez Campus, Mayaguez, Puerto Rico 00681-9044, USA
3. Department of Chemical Engineering, University of Puerto Rico—Mayagüez Campus, Mayagüez, Puerto Rico 00681-9000, USA
4. Chemistry Department, University of Puerto Rico—Mayagüez Campus, Mayagüez, Puerto Rico 00681-9000, USA