Chemical and electrochemical hydrogenation of CO2 to hydrocarbons on Cu single crystal surfaces: insights into the mechanism and selectivity from DFT calculations

RSC Advances ◽  
2015 ◽  
Vol 5 (71) ◽  
pp. 57361-57371 ◽  
Author(s):  
Lihui Ou
Keyword(s):  
Dft Calculations ◽  
Single Crystal ◽  
Surface Structure ◽  
Electrochemical Reduction ◽  
Reduction Process ◽  
Electrochemical Hydrogenation ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Research Results ◽  
Hydrogenation Of Co2

The research results have great significance for the in depth understanding of the selectivity of the CO2 electrochemical reduction process and the sensitivity of the Cu surface structure.

Characterization of double contours and twin images in REM

1988 ◽  
Vol 46 ◽  
pp. 686-687
Author(s):  
N. Yao ◽  
J. M. Cowley
Keyword(s):  
Single Crystal ◽  
Surface Structure ◽  
Fresnel Diffraction ◽  
Single Atom ◽  
High Contrast ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Surface Steps ◽  
As Effects

The REM technique may be used to reveal detail on the surfaces of large crystals. The single-atom-height steps on certain single crystal surfaces can be seen with high contrast. The observations of double contours of atomic steps on single crystal surfaces have been reported recently. The doubling has been interpreted as Fresnel diffraction contrast or as effects caused by the distortion field around the surface steps. However, due to the foreshortening and other effects, the resolution in the observation direction is limited and details of the surface structure can be obscured by imaging and diffraction artefacts.The InP(110) surface was obtained by cleavage of a (100) wafer in air. In order to reduce the contamination effects, a nitrogen cooling holder was employed during the observation. The Pt (111) surface was prepared and observed under the conditions described by Hsu and Cowley.

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