Growth and Reactivity of Titanium Oxide Ultrathin Films on Ni(110)

2007 ◽  
Vol 111 (21) ◽  
pp. 7704-7710 ◽  
Author(s):  
Anthoula Chrysa Papageorgiou ◽  
Gregory Cabailh ◽  
Qiao Chen ◽  
Andrea Resta ◽  
Edvin Lundgren ◽  
...  
Keyword(s):  
Titanium Oxide ◽  
Ultrathin Films

Modulating Electrochemical Activity in Polyaniline/Titanium Oxide Hybrid Nanostructured Ultrathin Films

2011 ◽  
Vol 50 (9) ◽  
pp. 5532-5542 ◽  
Author(s):  
Antonio F. Frau ◽  
Thomas J. Lane ◽  
Andrea E. Schlather ◽  
Jin Young Park ◽  
Rigoberto C. Advincula
Keyword(s):  
Titanium Oxide ◽  
Ultrathin Films ◽  
Electrochemical Activity

Mechanism of growth and structure of titanium oxide ultrathin films deposited on Cu(001)

2008 ◽  
Vol 602 (5) ◽  
pp. 1101-1113 ◽  
Author(s):  
P. Finetti ◽  
M. Caffio ◽  
B. Cortigiani ◽  
A. Atrei ◽  
G. Rovida
Keyword(s):  
Titanium Oxide ◽  
Ultrathin Films ◽  
Mechanism Of Growth

Fabrication and photocatalytic behavior of titanium oxide–gold nanoparticles composite ultrathin films prepared using surface sol–gel process

2020 ◽  
Vol 93 (3) ◽  
pp. 563-569 ◽  
Author(s):  
Shota Mitsukawa ◽  
Tsuyoshi Akiyama ◽  
Mikiya Hinoue ◽  
Kaho Shima ◽  
Takao Takishita ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Titanium Oxide ◽  
Ultrathin Films ◽  
Sol Gel ◽  
Sol Gel Process

Intercalative Poly(carbazole) Precursor Electropolymerization within Hybrid Nanostructured Titanium Oxide Ultrathin Films

2010 ◽  
Vol 2 (12) ◽  
pp. 3726-3737 ◽  
Author(s):  
Antonio F. Frau ◽  
Nicel C. Estillore ◽  
Timothy M. Fulghum ◽  
Rigoberto C. Advincula
Keyword(s):  
Titanium Oxide ◽  
Ultrathin Films ◽  
Nanostructured Titanium

Epitaxial growth manner and structure of superconducting oxide films

1990 ◽  
Vol 48 (4) ◽  
pp. 2-3
Author(s):  
Yoshichika Bando ◽  
Takahito Terashima ◽  
Kenji Iijima ◽  
Kazunuki Yamamoto ◽  
Kazuto Hirata ◽  
...  
Keyword(s):  
Ultrathin Films ◽  
Film Surface ◽  
High Energy ◽  
Epitaxial Films ◽  
Layer By Layer ◽  
Initial Growth ◽  
In Situ Growth ◽  
High Quality ◽  
Activated Reactive Evaporation

The high quality thin films of high-Tc superconducting oxide are necessary for elucidating the superconducting mechanism and for device application. The recent trend in the preparation of high-Tc films has been toward “in-situ” growth of the superconducting phase at relatively low temperatures. The purpose of “in-situ” growth is to attain surface smoothness suitable for fabricating film devices but also to obtain high quality film. We present the investigation on the initial growth manner of YBCO by in-situ reflective high energy electron diffraction (RHEED) technique and on the structural and superconducting properties of the resulting ultrathin films below 100Å. The epitaxial films have been grown on (100) plane of MgO and SrTiO, heated below 650°C by activated reactive evaporation. The in-situ RHEED observation and the intensity measurement was carried out during deposition of YBCO on the substrate at 650°C. The deposition rate was 0.8Å/s. Fig. 1 shows the RHEED patterns at every stage of deposition of YBCO on MgO(100). All the patterns exhibit the sharp streaks, indicating that the film surface is atomically smooth and the growth manner is layer-by-layer.

Electron Holographic Nano-Characterization of Gold Catalyst at Interface

2002 ◽  
Vol 727 ◽  
Author(s):  
S. Ichikawa ◽  
T. Akita ◽  
M. Okumura ◽  
M. Haruta ◽  
K. Tanaka
Keyword(s):  
Contact Angle ◽  
Titanium Oxide ◽  
Gold Catalyst ◽  
Three Dimensional ◽  
High Resolution Electron Microscopy ◽  
Electron Holography ◽  
Gold Particles ◽  
Oxide Support ◽  
The Mean ◽  
A Charge

AbstractThe catalytic properties of nanostructured gold catalyst are known to depend on the size of the gold particles and to be activated when the size decreases to a few nanometers. We investigated the size dependence of the three-dimensional nanostructure on the mean inner potential of gold catalysts supported on titanium oxide using electron holography and high-resolution electron microscopy (HREM). The contact angle of the gold particles on the titanium oxide tended to be over 90° for gold particles with a size of over 5 nm, and below 90° for a size of below 2 nm. This decreasing change in the contact angle (morphology) acts to increase the perimeter and hence the area of the interface between the gold and titanium oxide support, which is considered to be an active site for CO oxidation. The mean inner potential of the gold particles also changed as their size decreased. The value of the inner potential of gold, which is approximately 25 V in bulk state, rose to over 40 V when the size of the gold particles was less than 2 nm. This phenomenon indicates the existence of a charge transfer at the interface between gold and titanium oxide. The 3-D structure change and the inner potential change should be attributed to the specific electronic structure at the interface, owing to both the “nano size effect” and the “hetero-interface effect.”

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