**Author details**

Paul Nestor Djomou Djonga1 \*, Ahmat Tom2 , Hambate Gomdje Valery3 and Georges Elambo Nkeng4,5

1 Faculty of Science, Department of Chemistry, University of Maroua, Maroua, Cameroon

2 Department of Energy Engineering, University Institute of Technology, University of Ngaoundere, Ngaoundere, Cameroon

3 Departement of Textile and Leather Engineering, National Advanced School of Engineering of Maroua, University of Maroua, Maroua, Cameroon

4 Faculty of Science, Department of Chemistry, University of Buea, Buea, Cameroon

5 Ecole Nationale Supérieure des Travaux Publics, Yaounde, Cameroon

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

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