Highly selective plasma-activated copper catalysts for carbon dioxide reduction to ethylene
The results demonstrate that the roughness of oxide-derived copper catalysts plays only a partial role in determining the catalytic performance, while the presence of copper+ is key for lowering the onset potential and enhancing ethylene selectivity.
Metal core bonding motifs of monodisperse icosahedral Au13 and larger Au monolayer-protected clusters as revealed by X-ray absorption spectroscopy and transmission electron microscopy.
- L. Menard, Huiping Xu, R. Nuzzo
- Physics, ChemistryJournal of Physical Chemistry B
- 7 July 2006
Results from EXAFS measurements of a gold(I) dodecanethiolate polymer are presented that offer an alternative explanation for observations in previous reports that were interpreted as indicating Au MPC structures consisting of a Au core, Au2S shell, and thiolate monolayer.
Effects of surface topology on the formation of oxide islands on Cu surfaces
- Guangwen Zhou, Liang Wang, Judith C. Yang
- Materials Science
- 7 March 2005
We examined the effects of surface topology on the nucleation and growth of Cu2O oxide islands during the initial oxidation stages of Cu(100) and Cu(110) surfaces by in situ ultrahigh vacuum…
Temperature effect on the Cu2O oxide morphology created by oxidation of Cu(0 0 1) as investigated by in situ UHV TEM
- Guangwen Zhou, Judith C. Yang
- Physics, Materials Science
- 15 April 2003
High-throughput, semi-automated quantitative STEM mass measurement of supported metal nanoparticles using a conventional TEM/STEM.
- Stephen D. House, Yuxiang Chen, R. Jin, Judith C. Yang
- PhysicsUltramicroscopy
- 1 November 2017
Shape-dependent catalytic properties of Pt nanoparticles.
- S. Mostafa, F. Behafarid, B. Cuenya
- ChemistryJournal of the American Chemical Society
- 15 October 2010
A correlation between the number of undercoordinated atoms at the nanoparticle surface and the onset temperature for 2-propanol oxidation was observed, demonstrating that catalytic properties can be controlled through shape-selective synthesis.
Enhanced Carbon Dioxide Electroreduction to Carbon Monoxide over Defect-Rich Plasma-Activated Silver Catalysts.
- H. Mistry, Yong-Wook Choi, B. Roldan Cuenya
- ChemistryAngewandte Chemie
- 11 September 2017
DFT calculations reveal that the defect-rich surface of the plasma-oxidized silver foils in the presence of local electric fields drastically decrease the overpotential of CO2 electroreduction.
Dislocation nucleation facilitated by atomic segregation.
- Lianfeng Zou, Chaoming Yang, Guangwen Zhou
- Materials ScienceNature Materials
- 2018
This work demonstrates that compositional variations induced by surface segregation are accompanied by misfit strain and the formation of dislocations in the subsurface region via a surface diffusion and trapping process, and delineates the specific atomic-scale mechanisms associated with their nucleation, glide, climb, and annihilation at elevated temperatures.
Oxygen Reduction Reaction on Classically Immiscible Bimetallics: A Case Study of RhAu
- Hao Li, Long Luo, G. Henkelman
- Materials Science
- 25 January 2018
The catalytic properties of bulk-immiscible alloys are less explored than their bulk-miscible counterparts due to inherent difficulties in their synthesis and stabilization. The development of…
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