Preparation of graphene oxide as biomaterials for drug adsorption

Doxorubicin hydrochloride (DOX), is a class I anthracycline antibiotic (FDA approved in the 1970s) widely used as an effective chemotherapeutic drug for the treatment of many human neoplasms. Like most anticancer drugs, DOX can provoke severe toxicity to the body when it is administered at high doses systemically. Here we report the results of an investigation of drug adsorption on graphene oxide (GO) materials prepared by the Improved Hummer's method. High-purity GO has been prepared, characterized by XPS, UV-vis, FTIR-ATR, FESEM, UV- vis analyses, Zero Point Charge determinations and applied in the immobilization of doxorubicin, via simple noncovalent method. The adsorption percentage of the drug at pH 7 on GO was observed to be higher (equal to 90 %) than that obtained at acidic pH 3 (equal to 85%). Experimental result of adsorption of DOX on GO, obtained by FTIR-ATR spectroscopy analysis indicate that the inorganic material and the drug form and adduct by π-π stacking interactions