Nathan Meka

Department of Chemistry, College of Natural Sciences, Bahir Dar University, Bahir Dar, Ethiopia
Department of Chemistry, College of Natural Sciences, Jimma University, Jimma, Ethiopia

Assefa Sergawie

Department of Chemistry, College of Natural Sciences, Bahir Dar University, Bahir Dar, Ethiopia

Khalid Siraj

Department of Chemistry, College of Natural Sciences, Jimma University, Jimma, Ethiopia