1. Department of Industrial Chemistry, Addis Ababa Science and Technology University, P.O. Box 16417, Addis Ababa, Ethiopia
2. Department of Industrial Chemistry, Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University, P.O. Box 1647, Addis Ababa, Ethiopia
3. Department of Chemistry, Wolkite University, P.O. Box 07, Ethiopia
4. School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
5. Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama, Ethiopia