Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces

doi:10.1038/ncomms10749

	Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces
	Wong, Michael S.4,5; Zheng, Junrong 2,5; Li, Jiebo 2,5; Qian, Huifeng 4; Chen, Hailong 5; Zhao, Zhun 4; Yuan, Kaijun 1; Chen, Guangxu 3; Miranda, Andrea 5; Guo, Xunmin 5
刊名	NATURE COMMUNICATIONS
	2016-02-01
卷号	7
ISSN号	2041-1723
DOI	10.1038/ncomms10749
文献子类	Article
英文摘要	Energy migrations at metal nanomaterial surfaces are fundamentally important to heterogeneous reactions. Here we report two distinctive energy migration pathways of monolayer adsorbate molecules on differently sized metal nanoparticle surfaces investigated with ultrafast vibrational spectroscopy. On a 5 nm platinum particle, within a few picoseconds the vibrational energy of a carbon monoxide adsorbate rapidly dissipates into the particle through electron/hole pair excitations, generating heat that quickly migrates on surface. In contrast, the lack of vibration-electron coupling on approximately 1 nm particles results in vibrational energy migration among adsorbates that occurs on a twenty times slower timescale. Further investigations reveal that the rapid carbon monoxide energy relaxation is also affected by the adsorption sites and the nature of the metal but to a lesser extent. These findings reflect the dependence of electron/vibration coupling on the metallic nature, size and surface site of nanoparticles and its significance in mediating energy relaxations and migrations on nanoparticle surfaces.
WOS关键词	2-DIMENSIONAL INFRARED-SPECTROSCOPY ; DIRECT INELASTIC-SCATTERING ; PLATINUM NANOPARTICLES ; VIBRATIONAL LIFETIME ; CHEMICAL-DYNAMICS ; DOUBLE-RESONANCE ; REAL-TIME ; ULTRAFAST ; CLUSTERS ; CO
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000371037200011
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/171264]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Zheng, Junrong
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China 2.Peking Univ, Beijing Natl Lab Mol Sci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 3.Xiamen Univ, Coll Chem & Chem Engn, Xiamen 361005, Fujian, Peoples R China 4.Rice Univ, Dept Chem & Biomol Engn, 6100 Main St, Houston, TX 77005 USA 5.Rice Univ, Dept Chem, 6100 Main St, Houston, TX 77005 USA
推荐引用方式 GB/T 7714	Wong, Michael S.,Zheng, Junrong,Li, Jiebo,et al. Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces[J]. NATURE COMMUNICATIONS,2016,7.
APA	Wong, Michael S..,Zheng, Junrong.,Li, Jiebo.,Qian, Huifeng.,Chen, Hailong.,...&Zheng, Nanfeng.(2016).Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces.NATURE COMMUNICATIONS,7.
MLA	Wong, Michael S.,et al."Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces".NATURE COMMUNICATIONS 7(2016).