SYNTHESIS OF GRAPHENE OXIDE (GO) BY MODIFIED HUMMER’S METHODS AND ITS CHARACTERIZATION Journal title: Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji Authors: Mustafa YAZICI, İsmail TİYEK, M. Sabri ERSOY, M. Hakkı ALMA, Utkay DÖNMEZ, Behzat YILDIRIM, Tufan SA... Subject(s):