Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Genji Okada"'
Formation of ammonium ions by electrochemical oxidation of urea with a boron-doped diamond electrode
Autor:
Chiaki Terashima, Ken-ichi Katsumata, Takeshi Kondo, Norihiro Suzuki, Izumi Serizawa, Kai Takagi, Makoto Yuasa, Akira Fujishima, Genji Okada, Akihiro Okazaki
Publikováno v:
New Journal of Chemistry. 44:17637-17640
Ammonium ions were formed by electrochemical oxidation of urea with a boron-doped diamond (BDD) electrode. Almost complete decomposition of urea was achieved. When the BDD electrode was used together with a mesoporous titanium dioxide photocatalyst,
Autor:
Hidenori Yahiro, Tetsuji Kuramoto, Keiji Kurohagi, Takafumi Naka, Genji Okada, Masaru Shiotani
Publikováno v:
Microporous and Mesoporous Materials. 79:291-297
An electron paramagnetic resonance (EPR) study was carried out for O 2 molecule adducts formed on cobalt-phthalocyanine encapsulated into Y-type zeolite (CoPc-in-Y). The EPR spectrum, which is characteristic of a superoxide-type O 2 -adduct to CoPc-i
Publikováno v:
Solid State Ionics. 176:269-274
The cathodic polarization of strontium-doped lanthanum ferrite, La 1− x Sr x FeO 3−α , was studied in the hydrogen–oxygen fuel cell using proton-conducting SrCe 0.95 Yb 0.05 O 3−α as an electrolyte. The overpotential of La 0.7 Sr 0.3 FeO 3
Publikováno v:
Physical Chemistry Chemical Physics. 5:620-623
The conductivities of zeolite/poly(tetrafluoroethylene) composite membranes were measured in the presence of water vapor at 75–150 °C. The conductivity of composite membranes depended on zeolite structure, zeolite content, and exchangeable cation
Autor:
Keiji Kurohagi, Hidenori Yahiro, Masaru Shiotani, Genji Okada, Anders Lund, Yoshiteru Itagaki
Publikováno v:
Physical Chemistry Chemical Physics. 4:4255-4259
Nitrogen monoxide (NO) introduced into partially and fully lithium ion (Li+)-exchanged A-type zeolite was studied by X-band EPR measurements. Two types of NO species, NO monoradical and NO–NO biradical, were detected for the partially ion-exchanged
Publikováno v:
The Journal of Physical Chemistry. 100:7106-7113
A thin SiO2 film 20 A in thickness has been deposited on the TiO2 surface by a sputtering technique. In the SiO2-coated TiO2 electrode, a current density at −1.0 V is reduced to one-third that of t...
Autor:
Yoshihiko Sadaoka, Kazuaki Watanabe, Shigenori Matsushima, Enrico Traversa, Genji Okada, Yoshiro Sakai
Publikováno v:
Sensors and Actuators B: Chemical. 25:661-664
LeFeO 3 thin films with different thicknesses have been fabricated by the r.f. magnetron sputtering method on Al 2 O 3 substrates with comb-type Au electrodes. The influence of annealing temperatures and times on the NO 2 sensitivity of the thin film
Publikováno v:
The Journal of Physical Chemistry. 99:999-1004
Publikováno v:
Topics in Catalysis. 19:193-195
CdS clusters encapsulated in Y-type zeolite were prepared by a novel technique with non-aqueous systems. The mechanical mixture of CdCl2· 2.5H2O crystal with Y-type zeolite was heated at 773 K, followed by the H2S treatment at 373 K, resulting in th
Publikováno v:
Chemistry Letters. 21:515-518
We propose a new principle of an optical memory using photoionization of transition-metal ions doped into an oxide which is kept in strong electric field. Several conditions required to realize an optical memory are present.