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Pt2Cl82- Dimer Formation of [Bmim](2)PtCl4 Ionic Liquid When Confined in Silica Nanopores
Li, C; Wang, YX; Guo, XJ; Jiang, Z; Jiang, FL; Zhang, WL; Zhang, WF; Fu, HY; Xu, HJ; Wu, GZ; wuguozhong@sinap.ac.cn
2014
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume118Issue:6Pages:3140—3144
Abstract[Bmim](2)PtCl4 (Bmim: 1-butyl-3-methylimidazolium) ionic liquid was confined in porous SiO2 nanoparticles ([Bmim](2)PtCl4@SiO2) with an average pore size of 7.1 nm. The structure of [Bmim](2)PtCl4@SiO2 was investigated through X-ray diffraction and X-ray absorption fine structure (XAFS). The average coordination numbers of Pt species in [Bmim](2)PtCl4 and [Bmim](2)PtCl4@SiO2 were 4.0 and 5.0, respectively. Parts of Pt2+ in [Bmim](2)PtCl4@SiO2 were oxidized to form high-valence Pt4+. The possible forms and structures of Pt in the ionic liquid were analyzed according to the coordination number. XAFS analysis and density functional theory calculations imply the favorable formation of dimer (i.e., Pt2Cl82-) in [Bmim](2)PtCl4@SiO2, in which two bridge Cl atoms were connected to two Pt atoms. In addition, Pt2Cl82- contained mixed-valence platinum (Pt2+ and Pt4+). The results of differential scanning calorimetry also showed that the melting point of this nanoconfined ionic liquid increased.
KeywordCarbon Nanotubes Melting-point Structural-characterization Transition Simulation Crystal
Indexed BySCI
Language英语
WOS IDWOS:000331493400028
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14346
Collection中科院上海应用物理研究所2011-2020年
Corresponding Authorwuguozhong@sinap.ac.cn
Recommended Citation
GB/T 7714
Li, C,Wang, YX,Guo, XJ,et al. Pt2Cl82- Dimer Formation of [Bmim](2)PtCl4 Ionic Liquid When Confined in Silica Nanopores[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(6):3140—3144.
APA Li, C.,Wang, YX.,Guo, XJ.,Jiang, Z.,Jiang, FL.,...&wuguozhong@sinap.ac.cn.(2014).Pt2Cl82- Dimer Formation of [Bmim](2)PtCl4 Ionic Liquid When Confined in Silica Nanopores.JOURNAL OF PHYSICAL CHEMISTRY C,118(6),3140—3144.
MLA Li, C,et al."Pt2Cl82- Dimer Formation of [Bmim](2)PtCl4 Ionic Liquid When Confined in Silica Nanopores".JOURNAL OF PHYSICAL CHEMISTRY C 118.6(2014):3140—3144.
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