Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Denis V. Potapenko"'
Autor:
Bruce E. Koel, Michelle S. Hofman, Emanuel V. Scoullos, Lotanna Ezeonu, Simon G. Podkolzin, Xiaofang Yang, Denis V. Potapenko, Jason P. Robbins
Publikováno v:
Langmuir. 36:8705-8715
Acetic acid adsorption and reactions at multiple surface coverage values on Ni(110) were studied with temperature-programmed desorption (TPD) and infrared reflection absorption spectroscopy (IRAS) at 90-500 K. The experimental measurements were inter
Autor:
Denis V. Potapenko, Richard M. Osgood
Publikováno v:
Surface Science. 681:87-94
The diffusion of noble gas argon in the near-surface region of rutile TiO2 has been explored with the Temperature Programmed Out-Diffusion (TPOD) method. The Ar atoms were deposited in a several-nanometer-deep layer of the single-crystal TiO2(110) su
Publikováno v:
Analytical chemistry. 91(20)
Scanning electrochemical microscopy (SECM) has previously been employed in probing photoelectrochemical processes at semiconductor surfaces. However, the spatial resolution of these studies has not yet matched the nanoscale SECM resolution attained w
Publikováno v:
The Journal of Physical Chemistry C. 120:21373-21380
Scanning tunneling microscopy (STM) has been used to obtain the aerial distribution of bridge-bonded hydroxyl groups (HOb) on a rutile TiO2(110) surface, modified with a well-defined nanoscale strain field. Our study makes use of earlier findings tha
Publikováno v:
The Journal of Physical Chemistry C. 119:28946-28953
An atomically resolved study of an adsorbate photoreaction on the surface of an isolated TiO2 nanocrystal is reported. The crystal is grown in situ on Au(111) in an ultrahigh-vacuum chamber. The experiments use scanning tunneling microscopy (STM) bac
Autor:
George W. Flynn, Kwang Taeg Rim, Denis V. Potapenko, Zhisheng Li, Maria Flytzani-Stephanopoulos, Xiaodong Wen, Enrique R. Batista, Richard M. Osgood
Publikováno v:
The Journal of Physical Chemistry C. 119:1113-1120
We report an experimental and theoretical investigation of the decomposition (partial oxidation) of deuterated methanol (CD3OD) on a single-crystal Fe3O4(111) surface. The crystal surface contains ...
Publikováno v:
The Journal of Physical Chemistry C. 118:29999-30005
A surface moire pattern is used to examine the site-dependent variation in the surface reactivity of an organic molecule on an epitaxial-layered system. Our experiment examines chemisorption of trimethyl acetic acid (TMAA) molecules on epitaxial mono
Publikováno v:
Nano Letters. 14:6185-6189
Arrays of highly strained 5-25 nm-wide regions have been prepared on rutile TiO2(110) surface through a low energy Ar ion bombardment technique. Using scanning tunneling microscopy (STM) and an innovative STM tip-triggered nanoexplosion approach we s
Publikováno v:
Journal of Catalysis. 297:281-288
The reactivity of 2-propanol with TiO2 nanocrystals supported on Au(1 1 1) was studied by temperature-programmed desorption (TPD) and scanning tunneling microscopy (STM). The nanocrystals, which are grown through oxidation of a Ti Au surface alloy, h
Publikováno v:
The Journal of Physical Chemistry C. 116:4679-4685
We have studied the adsorption and tip-induced chemistry of 2-chloroanthracene on TiO2(110). STM images show that at 135 K and low coverage, i.e., ∼0.1 ML, these molecules are physisorbed along the...