JAEA
  • help
  • PC | SP
  • JP | EN
          
Refine your search：     
Report No.
 - 
Clear All
Search Results: Records 1-6 displayed on this page of 6
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Fabrication of TiO$$_{2}$$ photocatalysts by oxidative annealing of TiC

Choi, Y.; Umebayashi, Tsutomu; Yamamoto, Shunya; Tanaka, Shigeru

Journal of Materials Science Letters, 22(17), p.1209 - 1211, 2003/09

https://doi.org/10.1023/A:1025396416772
 Times Cited Count：48 Percentile：77.81(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Preparation of TiO$$_{2}$$ nanoparticles by pulsed laser ablation; Ambient pressure dependence of crystallization

Matsubara, Masakazu*; Yamaki, Tetsuya; Ito, Hisayoshi; Abe, Hiroaki*; Asai, Keisuke*

Japanese Journal of Applied Physics, Part 2, 42(5A), p.L479 - L481, 2003/05

Pulsed laser ablation with a KrF excimer laser was used to prepare fine particles of titanium dioxide (TiO$$_{2}$$). The ablation in an atmosphere of Ar and O$$_{2}$$ (5:5) at total pressures of $$geq$$ 1 Torr led to the formation of TiO$$_{2}$$ nanoparticles composed of anatase and rutile structures without any suboxides. The weight fraction of the rutile/anatase crystalline phases was controlled by the pressure of the Ar/O$$_{2}$$ gas. The TiO$$_{2}$$ nanoparticles had a spherical shape and their size, ranging from 10 and 14 nm, also appeared to be dependent on the ambient pressure.

Journal Articles

Influence of carbon-ion irradiation and hydrogen-plasma treatment on photocatalytic properties of titanium dioxide films

Choi, Y.; Yamamoto, Shunya; Saito, Hiroshi*; Sumita, Taishi*; Ito, Hisayoshi

Nuclear Instruments and Methods in Physics Research B, 206(1-4), p.241 - 244, 2003/05

https://doi.org/10.1016/S0168-583X(03)00741-9
 Times Cited Count：7 Percentile：46.07(Instruments & Instrumentation)

no abstracts in English

Journal Articles

High-quality epitaxial TiO$$_{2}$$ thin films grown on $$alpha$$-Al$$_{2}$$O$$_{3}$$ substrates by pulsed laser deposition

Shinohara, Ryuji*; Yamaki, Tetsuya; Yamamoto, Shunya; Ito, Hisayoshi; Asai, Keisuke*

Journal of Materials Science Letters, 21(12), p.967 - 969, 2002/06

https://doi.org/10.1023/A:1016090110315
 Times Cited Count：10 Percentile：38.43(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Alternate multilayer deposition from ammonium amphiphiles and titanium dioxide crystalline nanosheets using the Langmuir-Blodgett technique

Yamaki, Tetsuya; Asai, Keisuke*

Langmuir, 17(9), p.2564 - 2567, 2001/05

https://doi.org/10.1021/la0016423
 Times Cited Count：44 Percentile：92.20(Chemistry, Multidisciplinary)

A new type of TiO$$_{2}$$ nanosheet-organic complex multilayer film was successfully prepared by the Langmuir-Blodgett technique. Surface pressure-area curves demonstrated that a stable monolayer of dioctadecyldimethylammonium bromide (DODAB) was formed on an aqueous suspension of TiO$$_{2}$$ nanosheets derived from an exfoliated layered titanate, H$$_{x}$$Ti$$_{2-x/4}$$□$$_{x/4}$$O$$_{4}$$・H$$_{2}$$O (x$$sim$$0.7; □, vacancy). The hybrid monolayer of the ammonium amphiphiles and the TiO$$_{2}$$ nanosheet was quantitatively transferred onto a hydrophobic quartz plate to form a multilayer film. X-ray diffraction measurements confirmed the formation of an ordered structure of DODAB/TiO$$_{2}$$ with an interlayer distance of 3.4 nm.

Journal Articles

Formation of TiO$$_{2-x}$$F$$_{x}$$ compounds in fluorine-implanted TiO$$_{2}$$

Yamaki, Tetsuya; Sumita, Taishi; Yamamoto, Shunya

Journal of Materials Science Letters, 21(1), p.33 - 35, 2001/01

https://doi.org/10.1023/A:1014282225859
 Times Cited Count：91 Percentile：90.45(Materials Science, Multidisciplinary)

We showed the effects of 200 keV F$$^{+}$$ implantation in TiO$$_{2}$$ rutile single crystals followed by the thermal annealing. The isochronal annealing at 573 and 873 K for 5 h for each step led to the formation of an F-doped TiO$$_{2}$$ phase, along with the recovery of the radiation damage and the simultaneous impurity diffusion. This phase was identified to be a TiO$$_{2-x}$$F$$_{x}$$ compound with x = 0.0039 in the outmost region as determined by X-ray photoelectron spectroscopy (probably the first few atomic layers). The fluorination of TiO$$_{2}$$ leads to interesting characteristics and opens avenues towards photoelectronic films with various applications. In addition, our method enabled dopants to be introduced in a controlled manner at specific locations to realize impurity concentration gradients in TiO$$_{2}$$.

6 (Records 1-6 displayed on this page)
  • 1