Photon Energy Threshold in Direct Photocatalysis with Metal Nanoparticles: Key Evidence from the Action Spectrum of the Reaction

The Journal of Physical Chemistry Letters
Sarina SarinaHuai Yong Zhu

Abstract

By investigating the action spectra (the relationship between the irradiation wavelength and apparent quantum efficiency of reactions under constant irradiance) of a number of reactions catalyzed by nanoparticles including plasmonic metals, nonplasmonic metals, and their alloys at near-ambient temperatures, we found that a photon energy threshold exists in each photocatalytic reaction; only photons with sufficient energy (e.g., higher than the energy level of the lowest unoccupied molecular orbitals) can initiate the reactions. This energy alignment (and the photon energy threshold) is determined by various factors, including the wavelength and intensity of irradiation, molecule structure, reaction temperature, and so forth. Hence, distinct action spectra were observed in the same type of reaction catalyzed by the same catalyst due to a different substituent group, a slightly changed reaction temperature. These results indicate that photon-electron excitations, instead of the photothermal effect, play a dominant role in direct photocatalysis of metal nanoparticles for many reactions.

References

Dec 20, 2003·Physical Review Letters·D N DenzlerG Ertl
Oct 13, 2006·Chemical Reviews·Kazuo WatanabeHans-Joachim Freund
Dec 5, 2008·Accounts of Chemical Research·Surbhi LalNaomi J Halas
Dec 22, 2009·Chemical Communications : Chem Comm·Huaiyong ZhuDejun Wang
May 24, 2011·Nature Chemistry·Phillip ChristopherSuljo Linic
Jul 10, 2013·Proceedings of the National Academy of Sciences of the United States of America·Oara NeumannNaomi J Halas
Feb 27, 2014·Journal of the American Chemical Society·Run Long, Oleg V Prezhdo
Jan 3, 2015·Nano Letters·Gil TokerMicha Asscher
May 21, 2015·Nature Materials·Suljo LinicMatthew Morabito

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Citations

Feb 28, 2019·Chemical Science·Ayda ElhageJuan C Scaiano
Apr 1, 2020·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Tetsu Tatsuma, Hiroyasu Nishi
Dec 19, 2020·Chemical Society Reviews·Diego MateoJorge Gascon
Apr 21, 2020·Chemical Science·Yonatan DubiYonatan Sivan
Aug 30, 2018·The Journal of Physical Chemistry Letters·Qingzhe ZhangDongling Ma
Dec 1, 2017·Chemical Reviews·Yuchao ZhangWei David Wei

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