| 초록 |
Photocatalytic reduction of CO2 to fuel offers an exciting opportunity for helping to solve current energy and global warming problems. In the current work, we utilized Pt deposited N-doped graphene oxide-reduced titania (i.e., Pt-NGO/RT) photocatalyst for CO2 reduction into CH4. The reduced titania (i.e., RT) enhances visible light-absorption due to decreased bandgap, while NGO improves CO2 adsorption and provides a reactive site for the reaction. Sensitized with Pt nanoparticles, hybrid composite promotes the enhanced catalytic activity towards CH4 formation. The optimized catalyst exhibited ≈12 and ≈2 times higher CO2 reduction activity than pristine RT, and NGO-RT samples using a flow reactor system. The material appears intrinsically stable, with maintaining its stability over five 7 h cycles, with the sample heated in a vacuum after each cycle. |
