title: Comparative studies on single-layer reduced graphene oxide films obtained by electrochemical reduction and hydrazine vapor reduction.
abstract: The comparison between two kinds of single-layer reduced graphene oxide (rGO) sheets, obtained by reduction of graphene oxide (GO) with the electrochemical method and hydrazine vapor reduction, referred to as E-rGO and C-rGO, respectively, is systematically studied. Although there is no morphology difference between the E-rGO and C-rGO films adsorbed on solid substrates observed by AFM, the reduction process to obtain the E-rGO and C-rGO films is quite different. In the hydrazine vapor reduction, the nitrogen element is incorporated into the obtained C-rGO film, while no additional element is introduced to the E-rGO film during the electrochemical reduction. Moreover, Raman spectra show that the electrochemical method is more effective than the hydrazine vapor reduction method to reduce the GO films. In addition, E-rGO shows better electrocatalysis towards dopamine than does C-rGO. This study is helpful for researchers to understand these two different reduction methods and choose a suitable one to reduce GO based on their experimental requirements.
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singaporea. hzhang@ntu.edu.sg.
authors.forename: Zhijuan
authors.initials: Z
authors.lastname: Wang
authors.forename: Shixin
authors.initials: S
authors.lastname: Wu
authors.forename: Juan
authors.initials: J
authors.lastname: Zhang
authors.forename: Peng
authors.initials: P
authors.lastname: Chen
authors.forename: Guocheng
authors.initials: G
authors.lastname: Yang
authors.forename: Xiaozhu
authors.initials: X
authors.lastname: Zhou
authors.forename: Qichun
authors.initials: Q
authors.lastname: Zhang
authors.forename: Qingyu
authors.initials: Q
authors.lastname: Yan
authors.forename: Hua
authors.initials: H
authors.lastname: Zhang