1. Chemistry Department; The Hashemite University; P.O. Box 150459 Zarqa 13115 Jordan
2. Department of Chemistry, Faculty of Science; The University of Jordan; Amman Jordan
3. School of Energy Construction and Environment; Coventry University; Priory Street Coventry CV1 5FB UK
4. Department of Biological and Environmental Sciences; College of Arts and Sciences; Qatar University, State of Qatar; Qatar