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Detailed Program
Paper Number : FU-P06
Time Frame : 12:00~13:30
Presentation Date : Thursday, 27, November
Session Name : Fuel cells and Batteries
Session Chair 1# : -
Session Chair 2# : -
Fabrication of reduced graphene oxide single layer coated TiO2 nanorod/FTO electrode for solar hydrogen evolution
Hyun Kim
School of Advanced Materials and System Engineering
Keywords: Reduced graphene oxide, TiO2 nanorod, Hydrogen

The Hydrogen production from solar water splitting has been considered as a solution to the energy and environmental issues. Splitting water into hydrogen and oxygen has been occured by stages, i) absorption of light, ii) electron-hole excitation, iii) charge transfer to reactive sites, iv) redox reaction. Among these stages, charge transfer stage is most important to lead the redox reaction of water. Graphene has been considered a new approach to improve the charge transfer rate without direct or indirect recombination [1]. In this work, graphene sheets were chemically synthesized by improved Hummer’s method. TiO2 nanorods were grown on graphene/FTO glass by hydrothermal method and then directly immersed into solution involving graphene oxide. After several minutes in immersed state, the graphene oxide on TiO2 nanorods were chemically reduced by adding hydrazine solution as a reducing agent. The microstructural features of TiO2 nanorods/graphene/FTO photoanode were investigated by FE-SEM, TEM, XRD, Raman spectroscopy. Furthermore solar hydrogen production test was characterized in the PEC cells.
References:
[1] D. C. Marcano and J. M. Tour, ACS NANO, 4 (2010) p. 4806.
Acknowledgements : This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and future Planning (Grant No. 2014005324)