1. Laboratory of Applied Inorganic Chemistry, Department of Inorganic Chemistry, Faculty of Science University of Yaoundé I Yaoundé Cameroon
2. Local Materials Promotion Authority MINRESI/MIPROMALO Yaoundé Cameroon
3. Department of Chemistry, Faculty of Science, Research Unit of Noxious Chemistry and Environmental Engineering University of Dschang Dschang Cameroon
4. School of Chemical Engineering and Mineral Industries University of Ngaoundere Ngaoundere Cameroon
5. Department of Civil Engineering, University Institute of Technology (IUT) University of Douala Douala Cameroon
6. Department of Materials and Chemistry Vrije Universiteit Brussel Brussel Belgium
7. Department of Engineering “Enzo Ferrari” University of Modena and Reggio Emilia Modena Italy