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A. E. Raevskaya A. V. Korzhak A. L. Stroyuk S. Ya. Kuchmii 《Theoretical and Experimental Chemistry》2009,45(6):343-348
Samples of mesoporous TiO2 containing 80-85% of anatase and 15-20% of rutile with average particle and pore sizes of ∼10 nm and specific surface areas
of 70 m2/g were obtained. The nanohetero structures TiO2/Cu formed during photocatalytic reduction of CuII exhibit photocatalytic activity in the release of hydrogen from water–ethanol mixtures. The quantum yield with respect to
atomic hydrogen amounts to 1.5. 相似文献
54.
A. I. Kryukov S. Ya. Kuchmii S. V. Kulik A. V. Korzhak N. F. Guba 《Theoretical and Experimental Chemistry》1995,30(4):163-166
Heterojunctions and composites made of the semiconductors cadmium and bismuth sulfides have been examined as photocatalysts for producing molecular hydrogen from aqueous alcoholic solutions. Kinetic laws are derived together with the quantum yields of the reaction under various conditions and spectral characteristics of the photocatalysts.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 30, No. 4, pp. 197–201, July–August, 1994.We are indebted to the Fundamental Research Fund of the State Committee of the Ukraine for Science and Technology for support in this research. 相似文献
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56.
N. P. Smirnova A. I. Kryukov A. M. Eremenko Yu. A. Galagan S. Ya. Kuchmii 《Theoretical and Experimental Chemistry》1998,34(5):272-276
Porous silicate glasses containing cadmium sulfide nanoparticles doped with silver ions have been prepared; light absorption
and luminescence have been investigated; and a new general route for the cretion of nanostructural materials of this type
has been mapped out.
Translated from Teoreticheskaya i éksperimental'naya Khimiya, Vol. 34, No. 5, pp. 297–301, September–October, 1998. 相似文献
57.
A. E. Raevskaya A. V. Korzhak A. L. Stroyuk S. Ya. Kuchmii 《Theoretical and Experimental Chemistry》2005,41(4):241-246
We have studied the photochemical processes occurring in colloidal ZnS solutions containing zinc chloride and sodium sulfite
as additives. Irradiation of such systems leads to reduction of Zn(II), the rate of which increases as the size of the ZnS
nanoparticles decreases. Based on analysis of the kinetic curves for the reaction, we hypothesize that photoreduction of Zn(II)
is a two-electron process.
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Translated from Teoreticheskaya i Eksperimental'naya Khimiya, Vol. 41, No. 4, pp. 231–235, July–August, 2005. 相似文献
58.
Raevskaya A. E. Stroyuk A. L. Kuchmii S. Ya. 《Theoretical and Experimental Chemistry》2003,39(3):158-165
The optical and photophysical characteristics of quantum-dimensional particles of CdS stabilized in water (the oscillator force of the first exciton transition, the forbidden band width, the conduction and valence band potentials) were determined. It was established that pulse excitation of CdS nanoparticles gives rise to nonstationary bleaching of the colloid, due to the accumulation of excess electrons in the conduction band. Their amount and their consumption rate are determined by the nature and concentration of the electron donors and acceptors present in the system. 相似文献
59.
A. L. Stroyuk A. I. Kryukov S. Ya. Kuchmii V. D. Pokhodenko 《Theoretical and Experimental Chemistry》2005,41(4):207-228
The characteristics of photocatalytic systems based on nanostructural semiconductors, characterized by quantum size effects,
are discussed. An analysis is made of the consequences of exciton quantum confinement in the volume that are significant for
photocatalysis and, in particular, the increase in the energy of photogenerated charges with decrease in the particle size,
the photoinduced polarization processes, and also the simultaneous display of these effects. Possible ways of further increasing
the effectiveness of systems based on nanostructural semiconductors are examined.
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Translated from Teoreticheskaya i Eksperimental'naya Khimiya, Vol. 41, No. 4, pp. 199–218, July–August, 2005. 相似文献
60.
V. V. Shvalagin A. E. Raevskaya A. L. Stroyuk S. Ya. Kuchmii 《Theoretical and Experimental Chemistry》2007,43(3):184-190
The possibility of decreasing the size of colloidal nanoparticles of CdS in the oxidative photocorrosion reaction in the presence
of methylviologen and of increasing their size during photocatalytic reduction of sulfur in ethanol in the presence of cadmium
acetate. A dependence of the quantum yield of the latter reaction on the initial size of CdS nanoparticles was observed, which
was interpreted as a result of quantum size effects.
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Translated from Teoreticheskaya i éksperimental’naya Khimiya, Vol. 43, No. 3, pp. 170–175, May–June, 2007. 相似文献