Why (1 0 0) Terraces Break and Make Bonds: Oxidation of Dimethyl Ether on Platinum Single-Crystal Electrodes

2013 ◽  
Vol 135 (38) ◽  
pp. 14329-14338 ◽  
Author(s):  
Hongjiao Li ◽  
Federico Calle-Vallejo ◽  
Manuel J. Kolb ◽  
Youngkook Kwon ◽  
Yongdan Li ◽  
...  
Keyword(s):  
Single Crystal ◽  
Dimethyl Ether ◽  
Platinum Single Crystal

Electrochemical behaviors of dimethyl ether on platinum single crystal electrodes. Part II: Pt(100)

2010 ◽  
Vol 642 (1) ◽  
pp. 82-91 ◽  
Author(s):  
Leilei Lu ◽  
Geping Yin ◽  
Yujin Tong ◽  
Yi Zhang ◽  
Yunzhi Gao ◽  
...  
Keyword(s):  
Single Crystal ◽  
Dimethyl Ether ◽  
Electrochemical Behaviors ◽  
Platinum Single Crystal

Electrocatalytic oxidation of dimethyl ether on ruthenium modified platinum single crystal electrodes

2009 ◽  
Vol 10 (6) ◽  
pp. 971-974 ◽  
Author(s):  
Leilei Lu ◽  
Geping Yin ◽  
Zhenbo Wang ◽  
Kedi Cai ◽  
Yunzhi Gao
Keyword(s):  
Single Crystal ◽  
Dimethyl Ether ◽  
Electrocatalytic Oxidation ◽  
Platinum Single Crystal

Surface Structure Dependent Electro-oxidation of Dimethyl Ether on Platinum Single-Crystal Electrodes

2007 ◽  
Vol 111 (51) ◽  
pp. 18836-18838 ◽  
Author(s):  
Yujin Tong ◽  
Leilei Lu ◽  
Yi Zhang ◽  
Yunzhi Gao ◽  
Geping Yin ◽  
...  
Keyword(s):  
Single Crystal ◽  
Surface Structure ◽  
Dimethyl Ether ◽  
Platinum Single Crystal ◽  
Electro Oxidation

Electrochemical behaviors of dimethyl ether on platinum single crystal electrodes. Part I: Pt(111)

2008 ◽  
Vol 619-620 ◽  
pp. 143-151 ◽  
Author(s):  
Leilei Lu ◽  
Geping Yin ◽  
Yujin Tong ◽  
Yi Zhang ◽  
Yunzhi Gao ◽  
...  
Keyword(s):  
Single Crystal ◽  
Dimethyl Ether ◽  
Electrochemical Behaviors ◽  
Platinum Single Crystal

Experiments on REM and SREM using a Tem/Stem Microscope with a Configurable Angle-Resolving Detector

1990 ◽  
Vol 48 (1) ◽  
pp. 338-339
Author(s):  
H. Banzhof ◽  
I. Daberkow
Keyword(s):  
Electron Microscopy ◽  
Single Crystal ◽  
Crystal Surface ◽  
High Energy ◽  
Contrast Effects ◽  
Atomic Steps ◽  
Single Crystal Surfaces ◽  
Platinum Single Crystal ◽  
Reflection Electron Microscopy ◽  
Beam Reflection

A Philips EM 420 electron microscope equipped with a field emission gun and an external STEM unit was used to compare images of single crystal surfaces taken by conventional reflection electron microscopy (REM) and scanning reflection electron microscopy (SREM). In addition an angle-resolving detector system developed by Daberkow and Herrmann was used to record SREM images with the detector shape adjusted to different details of the convergent beam reflection high energy electron diffraction (CBRHEED) pattern.Platinum single crystal spheres with smooth facets, prepared by melting a thin Pt wire in an oxyhydrogen flame, served as objects. Fig. 1 gives a conventional REM image of a (111)Pt single crystal surface, while Fig. 2 shows a SREM record of the same area. Both images were taken with the (555) reflection near the azimuth. A comparison shows that the contrast effects of atomic steps are similar for both techniques, although the depth of focus of the SREM image is reduced as a result of the large illuminating aperture. But differences are observed at the lengthened images of small depressions and protrusions formed by atomic steps, which give a symmetrical contrast profile in the REM image, while an asymmetric black-white contrast is observed in the SREM micrograph. Furthermore the irregular structures which may be seen in the middle of Fig. 2 are not visible in the REM image, although it was taken after the SREM record.

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