Solvation and stabilization of palladium nanoparticles in phosphonium-based ionic liquids: a combined infrared spectroscopic and density functional theory study

2014 ◽  
Vol 16 (38) ◽  
pp. 20672-20680 ◽  
Author(s):  
Elena E. Zvereva ◽  
Stefan Grimme ◽  
Sergey A. Katsyuba ◽  
Vadim V. Ermolaev ◽  
Daria A. Arkhipova ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Ionic Liquids ◽  
Palladium Nanoparticles ◽  
Density Functional ◽  
Pd Nanoparticles ◽  
Dispersion Forces ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Nanoparticle Interactions ◽  
Anions And Cations

Pd nanoparticles interact with both the anions and cations of tri-tert-butyl-R-phosphonium-based ionic liquids. Dispersion forces dominate the cation–nanoparticle interactions.

Density Functional Theory Study on the Absorption of CO2 by the Ionic Liquid of 1-butyl-3-methylimidazolium Acetate

2013 ◽  
Vol 807-809 ◽  
pp. 543-548 ◽  
Author(s):  
Yan Fei Chen ◽  
Yan Hong Cui ◽  
Dong Shun Deng ◽  
Ning Ai
Keyword(s):  
Density Functional Theory ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Density Functional ◽  
Ion Pairs ◽  
Ion Pair ◽  
Frontier Molecular Orbitals ◽  
Density Functional Theory Study ◽  
Electronic Density ◽  
Functional Theory

The absorptions of CO2on the 1-butyl-3-methylimidazolium acetate ([Bmi [Ac]) with different substituents are calculated systematically at GGA/PW91 level. Three hydrogen bonds are formed between [A and cations of 1-n-[Bmi [A ([NBmi+) and 1-tert-[Bmi [A ([TBmi+). The interaction between CO2and the [NBmi [A by a C-O bond is much weaker than that with the [TBmi [A by forming a O...O...C...C four member-ring. The chemisorption of CO2on the ion pairs of [NBmi [A is much weaker than that on the [TBmi [A, resulted from the absorption energies analysis. The frontier molecular orbitals shows the electronic density overlap between absorbed CO2and the [A in CO2-[NBmi [A is much weaker than that in [TBmi [A. Therefore, the chemisorption of CO2on the ion pair of [NBmi [A is much weaker than that on the [TBmi [A. The ionic liquids based [NBmi+can be used repetitively, and the adsorbed CO2would be easier desorbed.

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