1. Chemistry and Chemical Processing Technology; Abant Izzet Baysal University; Bolu 14900 Turkey
2. Department of Physics; Abant Izzet Baysal University; Bolu 14280 Turkey
3. Department of Chemistry; Faculty of Art and Science; Abant Izzet Baysal University; Bolu 14280 Turkey
4. Department of Mechanical Engineering; Abant Izzet Baysal University; Bolu 14280 Turkey