**Author details**

Halim Hammi1 \*, Amal Brichni1,2, Salima Aggoun3 and Adel Mnif1

\*Address all correspondence to: halimhammi2015@gmail.com

1 Useful Material Valorization Laboratory, National Center for Research in Materials Sciences, Soliman, Tunisia

2 Université de Tunis El Manar, Faculté des Sciences de Tunis, Tunis, Tunisie

3 University of Cergy-Pontoise (L2MGC), Neuville Sur Oise, Cergy-Pontoise Cedex, France
