Synthesis, optical and electrochemical properties of ZnO nanowires/graphene oxide heterostructures
1 School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2 Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
3 Department of Chemistry and Biochemistry & Materials Science, Engineering, and Commercialization Program, Texas State University–San Marcos, San Macros, TX 78666, USA
Nanoscale Research Letters 2013, 8:133 doi:10.1186/1556-276X-8-133Published: 22 March 2013
Large-scale vertically aligned ZnO nanowires with high crystal qualities were fabricated on thin graphene oxide films via a low temperature hydrothermal method. Room temperature photoluminescence results show that the ultraviolet emission of nanowires grown on graphene oxide films was greatly enhanced and the defect-related visible emission was suppressed, which can be attributed to the improved crystal quality and possible electron transfer between ZnO and graphene oxide. Electrochemical property measurement results demonstrated that the ZnO nanowires/graphene oxide have large integral area of cyclic voltammetry loop, indicating that such heterostructure is promising for application in supercapacitors.