Effect of Surface States on CO-Tolerance at Pt2Ru3/C Anode Catalysts Analyzed by In Situ ATR-FTIR

2010 ◽  
Keyword(s):  
Surface States ◽  
Anode Catalysts ◽  
Co Tolerance ◽  
Effect Of Surface

Nucleation and initial growth of Pd2Si crystals on Si(111)

1993 ◽  
Vol 51 ◽  
pp. 844-845
Author(s):  
Xianghong Tong ◽  
Oliver Pohland ◽  
J. Murray Gibson
Keyword(s):  
High Vacuum ◽  
Dark Field ◽  
Ultra High Vacuum ◽  
Initial Growth ◽  
Surface And Interface ◽  
Dark Field Imaging ◽  
Transmission Electron ◽  
Initial Stage ◽  
Effect Of Surface

The nucleation and initial stage of Pd2Si crystals on Si(111) surface is studied in situ using an Ultra-High Vacuum (UHV) Transmission Electron Microscope (TEM). A modified JEOL 200CX TEM is used for the study. The Si(111) sample is prepared by chemical thinning and is cleaned inside the UHV chamber with base pressure of 1x10−9 τ. A Pd film of 20 Å thick is deposited on to the Si(111) sample in situ using a built-in mini evaporator. This room temperature deposited Pd film is thermally annealed subsequently to form Pd2Si crystals. Surface sensitive dark field imaging is used for the study to reveal the effect of surface and interface steps.The initial growth of the Pd2Si has three stages: nucleation, growth of the nuclei and coalescence of the nuclei. Our experiments shows that the nucleation of the Pd2Si crystal occurs randomly and almost instantaneously on the terraces upon thermal annealing or electron irradiation.

Electronic surface states in GaAs/Ga1 − xAlxAs superlattice: effect of surface location

Vacuum ◽  
1995 ◽  
Vol 46 (5-6) ◽  
pp. 459-463 ◽  
Author(s):  
M Stȩślicka ◽  
R Kucharczyk ◽  
EH El Boudouti ◽  
B Djafari-Rouhani ◽  
ML Bah ◽  
...  
Keyword(s):  
Surface States ◽  
Surface Location ◽  
Electronic Surface ◽  
Effect Of Surface

scholarly journals The gigantic Rashba effect of surface states energetically buried in the topological insulator Bi2Te2Se

2014 ◽  
Vol 16 (6) ◽  
pp. 065016 ◽  
Author(s):  
K Miyamoto ◽  
T Okuda ◽  
M Nurmamat ◽  
M Nakatake ◽  
H Namatame ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Surface States ◽  
Rashba Effect ◽  
Effect Of Surface

CO tolerance and CO oxidation at Pt and Pt–Ru anode catalysts in fuel cell with polybenzimidazole–H3PO4 membrane

2010 ◽  
Vol 55 (20) ◽  
pp. 6073-6080 ◽  
Author(s):  
A.D. Modestov ◽  
M.R. Tarasevich ◽  
V.Ya. Filimonov ◽  
E.S. Davydova
Keyword(s):  
Fuel Cell ◽  
Co Oxidation ◽  
Anode Catalysts ◽  
Co Tolerance

Photoreactivity of ZnO nanoparticles in visible light: Effect of surface states on electron transfer reaction

2009 ◽  
Vol 105 (7) ◽  
pp. 074308 ◽  
Author(s):  
Sunandan Baruah ◽  
Sudarson Sekhar Sinha ◽  
Barnali Ghosh ◽  
Samir Kumar Pal ◽  
A. K. Raychaudhuri ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Zno Nanoparticles ◽  
Transfer Reaction ◽  
Surface States ◽  
Electron Transfer Reaction ◽  
Light Effect ◽  
Effect Of Surface

scholarly journals Mechanism of CO Tolerance at Pt-Alloy Anode Catalysts for Polymer Electrolyte Fuel Cells

2000 ◽  
Vol 68 (4) ◽  
pp. 244-251 ◽  
Author(s):  
Masahiro WATANABE ◽  
Yimin ZHU ◽  
Hiroshi IGARASHI ◽  
Hiroyuki UCHIDA
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Anode Catalysts ◽  
Alloy Anode ◽  
Co Tolerance ◽  
Pt Alloy

Facile enhancement of the durability and CO tolerance of CB/PtRu by poly(2,5-benzimidazole) coating via in situ polymerization

RSC Advances ◽  
2016 ◽  
Vol 6 (98) ◽  
pp. 96416-96420 ◽  
Author(s):  
Zehui Yang ◽  
Xinxin Yu ◽  
Fang Luo
Keyword(s):  
In Situ Polymerization ◽  
Co Tolerance ◽  
Ru Nanoparticles

Ru nanoparticles were stabilized when coated with a polymer formed in situ from its monomer.

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