Hot-Electron-Induced Dissociation of H2 on Gold Nanoparticles Supported on SiO2

Date
2014-01-08
Authors
Mukherjee, Shaunak
Zhou, Linan
Goodman, Amanda M.
Large, Nicolas
Ayala-Orozco, Ciceron
Zhang, Yu
Nordlander, Peter
Halas, Naomi J.
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
Abstract

Hot-electron-induced photodissociation of H2 was demonstrated on small Au nanoparticles (AuNPs) supported on SiO2. The rate of dissociation of H2 was found to be almost 2 orders of magnitude higher than that observed on equivalently prepared AuNPs on TiO2. The rate of H2 dissociation was found to be linearly dependent on illumination intensity with a wavelength dependence resembling the absorption spectrum of the plasmon of the AuNPs. This result provides strong additional support for the hot-electron-induced mechanism for H2 dissociation in this photocatalytic system.

Description
This version is the accepted manuscript. See final published version at https://doi.org/10.1021/ja411017b
Keywords
Citation
Mukherjee, S., Zhou, L., Goodman, A. M., Large, N., Ayala-Orozco, C., Zhang, Y., . . . Halas, N. J. (2014). Hot-Electron-Induced Dissociation of H2 on Gold Nanoparticles Supported on SiO2. Journal of the American Chemical Society, 136(1), 64-67. doi:10.1021/ja411017b
Department
Physics and Astronomy