560
Underlying Mechanisms of Plasmon-Enhanced Photocatalysis and Photoelectrochemical Performance
Monday, 6 October 2014: 14:40
Sunrise, 2nd Floor, Mars 1-4 (Moon Palace Resort)
N. Wu (West Virginia University), S. K. Cushing (Dept. of Physics, West Virginia University), and J. Li (Dept. Mech. and Aero. Engineering, West Virginia University)
Plasmonic metal-semiconductor composite photocatalysts and photoelectrodes have received extensive attention of researchers. This talk describes how surface plasmon resonance (SPR) enhances the light absorption and transfers the plasmonic energy from the metal to the semiconductor, which induces the charge separation and refrains the charge recombination in the semiconductor. This talk will present three plasmon-enhanced photocatalysis mechanisms: photonic enhancement, direct electron transfer (DET) and plasmon-induced resonance energy transfer (PIRET) mechanism. The talk will give an example of solar hydrogen generation by plasmonic metal-semiconductor composites.
References
[1] J. Li, S. K. Cushing, J. Bright, F. Meng, T. R. Senty, P. Zheng, A. D. Bristow, N. Q. Wu, ACS Catalysis, 3 (2013), 47-51
[2] S. K. Cushing*, L. A. Hornak, J. Lankford, Y. Liu, N.Q. Wu, Applied Physics A, 103 (2011), 955-958.
[3] Li, J.; Cushing, S. K.; Zheng, P.; Meng, F.; Chu, D.; Wu, N. Q. Nature Communications, 2013, 4, 2651, DOI: 10.1038/ncomms3651.
Acknowledgement:
This work was supported by the National Science Foundation (CBET-1233795). The resource and facilities used in this work were partially supported by Research Challenge Grant from the State of West Virginia (EPS08-01), NSF (EPS 1003907), and the West Virginia University Research Corporation and the West Virginia EPSCoR Office. The use of WVU shared facilities is greatly appreciated.
