Boron doped graphene oxide: synthesis and application to glucose responsive reactivity

In this present research, we have synthesized graphene oxide (GO) by modified Hummer’s method using graphite flake as starting material. Boron atoms were successfully doped into the GO framework with an atomic percentage of 1.641.89 at. % by hydrothermal reduction using boric acid as a precursor. The presence of B–O, B–C and C–O bonds was predicted from the FT-IR spectral analyses. Shifting of XRD peak from 10 to 26 presumably indicated the reduction of GO by the incorporation of boron atoms. The crystalline defect was further confirmed by the Raman spectroscopy. Finally, the C=C, C–O, -BC3, -BC2O, -BCO2, -COO-, B2O3, and C–OH chemical environments were precisely predicted by the XPS peak fitting analyses. The boron functionalized reduced graphene oxide (B-rGO) was subjected to the glucose adsorption reaction that showed significant glucose adsorption reactivity of 6570% due to the high adsorption affinity of boron towards oxygen atoms of the glucose molecules.