1. Division of Material Science; Department of Engineering Sciences and Mathematics; Luleå University of Technology; 97187 Luleå Sweden
2. Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro; 76080 Sindh Pakistan
3. Catalan Institute of Nanoscience and Nanotechnology (ICN2); CSIC and BIST; Campus UAB, Bellaterra 08193 Barcelona Catalonia Spain
4. Catalonia Institute for Energy Research (IREC); Jardins de les Dones de Negre 1; Sant Adrià del Besòs Barcelona 08930 Catalonia Spain
5. Department of Physics; Chemistry and Biology; Linkoping University; 58183 Linkoping Sweden
6. ICREA; Pg. Lluís Companys 23; 08010 Barcelona Catalonia Spain