The electrochemical behavior of AA and DA on graphene oxide modified electrodes containing various content of oxygen functional groups

► Controllable reduction in graphene oxide is realized by adjusting reduction conditions. ► Graphene modified electrodes containing various content of oxygen groups are fabricated. ► Electrochemical behavior of AA and DA on graphene modified electrodes is studied. ► The results indicate that the role various oxygen groups play is significant and wildly different. ► The optimum reducing conditions are explored to detect them and the results are satisfactory.