Photo-assisted Deposition of Pt Nanoparticles onto TiO2 as Highly Active Nano-Photocatalyst for CO2 Photoreduction
Paper ID : 1112-ICNS
Authors:
Mohsen Moradi1, Farhad khorasheh1, Afsanehsadat Larimi *2, Reza Nematollahi1
1Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran,Iran
2Chemical and Process Engineering Department, Niroo Research Institute, Tehran, Iran
Abstract:
The conversion of anthropogenous CO2 gas into value-add chemicals known as solar fuel technology attracted much consideration from the beginning of the 21st century owing to the potential of this technology in solving the climate change and energy shortage issues. In the present study, a well-known photocatalyst, TiO2, was subjected to Pt nanoparticles loading as a cocatalyst to boost the photocatalytic CO2 conversion. A facile photo-assisted method was employed to introduce Pt onto the surface of TiO2. XRD, DRS and TEM analyses performed to investigate the prepared Pt/TiO2 nano-photocatalysts. By loading different Pt content (1, 1.5 and 2 wt %), it is revealed that Pt/TiO2 dramatically enhance the CO2 photo-conversion in comparison with pristine TiO2, which is attributed to the enhancement in charge-separation efficiency and CO2 activation kinetics upon Pt deposition. Also, the reaction results imply that 1.5 wt % Pt/TiO2 has an optimal performance toward CH4 generation with the maximum production of 15.8 ╬╝mol/gcat after 10h of illumination.
Keywords:
Nano-Photocatalyst; CO2 Reduction; TiO2; Platinum; Photodeposition
Status : Abstract Accepted (Poster Presentation)