Photon Energy Threshold in Direct Photocatalysis with Metal Nanoparticles: Key Evidence from the Action Spectrum of the Reaction
文献类型：期刊论文
| 作者 | Sarina, Sarina1; Jaatinen, Esa1; Xiao, Qi1,2; Huang, Yi Ming1; Christopher, Philip3; Zhao, Jin Cai4; Zhu, Huai Yong1 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY LETTERS
 |
| 出版日期 | 2017-06-01 |
| 卷号 | 8期号:11页码:2526-2534 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/38491]  |
| 专题 | 化学研究所_光化学实验室 |
| 作者单位 | 1.Queensland Univ Technol, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia 2.CSIRO Mfg, Bayview Ave, Clayton, Vic 3168, Australia 3.Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA 4.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sarina, Sarina,Jaatinen, Esa,Xiao, Qi,et al. Photon Energy Threshold in Direct Photocatalysis with Metal Nanoparticles: Key Evidence from the Action Spectrum of the Reaction[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2017,8(11):2526-2534. |
| APA | Sarina, Sarina.,Jaatinen, Esa.,Xiao, Qi.,Huang, Yi Ming.,Christopher, Philip.,...&Zhu, Huai Yong.(2017).Photon Energy Threshold in Direct Photocatalysis with Metal Nanoparticles: Key Evidence from the Action Spectrum of the Reaction.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,8(11),2526-2534. |
| MLA | Sarina, Sarina,et al."Photon Energy Threshold in Direct Photocatalysis with Metal Nanoparticles: Key Evidence from the Action Spectrum of the Reaction".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 8.11(2017):2526-2534. |
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来源：化学研究所
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