Electric Double Layer of Au(100)/Imidazolium-Based Ionic Liquids Interface: Effect of Cation Size

CORC > 厦门大学 > 化学化工－已发表论文

	Electric Double Layer of Au(100)/Imidazolium-Based Ionic Liquids Interface: Effect of Cation Size
	Su, Yuzhuan ; Yan, Jiawei ; Li, Miangang ; Zhang, Meng ; Mao, Bingwei ; Mao BW(毛秉伟)
刊名	http://dx.doi.org/10.1021/jp3079919
	2013-01-10
关键词	IN-SITU STM DIFFERENTIAL CAPACITANCE 1-ALKYL-3-METHYLIMIDAZOLIUM TETRAFLUOROBORATE GLASSY-CARBON TEMPERATURE AU(111) ELECTROCHEMISTRY ELECTRODEPOSITION RECONSTRUCTION CONDUCTIVITY
英文摘要	We have carried out differential capacitance measurements and in-situ scanning tunneling microscope (STM) characterizations to investigate the effect of the length of alkyl side chains on an electric double layer of Au(100)/imidazolium-based ionic liquids interface. In ionic liquids consisting of BMI+ cation (1-butyl-3-methylimidazolium), differential capacitance curves present an obvious bell-shaped feature. In ionic liquids with PMI+ (1-methyl-3-propylimidazolium) or OMI+ (1-methyl-3-octylimidazolium) cations, the rising of capacitance from about -0.5 V disturbs the bell-shaped feature. In-situ STM characterizations reveal the generality of surface etching and micelle-like adsorption of imidazolium cations on Au(100) at potential around the peaks of the bell-shaped feature, demonstrating that the potential of zero charge (PZC) should locate at the potential close to the peaks. Because of the longer side chain length and stronger interaction with Au(100) substrate, an extra capacitance peak appears at the potential as negative as -1.65 V in OMIPF6 and a corresponding order-disorder transformation of OMI+ cation adlayer is revealed by STM, indicating a correlation between differential capacitance curve and STM.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/62584]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Su, Yuzhuan,Yan, Jiawei,Li, Miangang,et al. Electric Double Layer of Au(100)/Imidazolium-Based Ionic Liquids Interface: Effect of Cation Size[J]. http://dx.doi.org/10.1021/jp3079919,2013.
APA	Su, Yuzhuan,Yan, Jiawei,Li, Miangang,Zhang, Meng,Mao, Bingwei,&毛秉伟.(2013).Electric Double Layer of Au(100)/Imidazolium-Based Ionic Liquids Interface: Effect of Cation Size.http://dx.doi.org/10.1021/jp3079919.
MLA	Su, Yuzhuan,et al."Electric Double Layer of Au(100)/Imidazolium-Based Ionic Liquids Interface: Effect of Cation Size".http://dx.doi.org/10.1021/jp3079919 (2013).