Photocatalytic growth of US, PbS, and CuxS nanoparticles on the nanocrystalline TiO2 films

被引：40

作者：

Zhukovskiy, Maxim A. ^{[2
]}

Stroyuk, Alexander L. ^{[1
]}

Slivalagin, Vitaliy V. ^{[1
]}

Smirnova, Natalia R. ^{[2
]}

Lytvyn, Oksana S. ^{[3
]}

Eremenko, Anna M. ^{[2
]}

机构：

[1] Ukr Nat Acad Sci, Pysarzhevski Inst Phys Chem, UA-03028 Kiev, Ukraine

[2] Ukr Nat Acad Sci, Chuiko Inst Surface Chem, UA-03164 Kiev, Ukraine

[3] Ukr Nat Acad Sci, Lashkarev Inst Semicond Phys, UA-03028 Kiev, Ukraine

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2009年 / 203卷 / 2-3期

关键词：

Semiconductor nanoparticles; Pholocatalysis; Photosynthesis; Titanium dioxide; Cadmium sulfide; Lead sulfide; Copper sulfide; Nanocomposites; INTERPARTICLE ELECTRON-TRANSFER; SELF-ASSEMBLED LAYERS; SEMICONDUCTOR COLLOIDS; HYDROGEN-PRODUCTION; TITANIUM-DIOXIDE; CDS NANOPARTICLE; MESOPOROUS TIO2; BAND-GAP; SIZE; PHOTOSENSITIZATION;

D O I：

10.1016/j.jphotochem.2009.01.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The CdS/TiO2, PbS/TiO2, and CuxS/TiO2 nanocomposites were synthesized via the photocatalytic reduction Of Sulfur on the surface of nanocrystalline TiO2 films. The photocatalytic synthesis produced smaller CdS nanoparticles in the comparison with the conventional chemical deposition of cadmium sulfide. The mean size of US nanoparticles can be varied by changing the illumination intensity and the TiO2 film calcination temperature. An AFM study of the Surface structure of CdS/TiO2 and PbS/TiO2 nanocomposites showed that the photocatalytic deposition results if) formation of the polycrystalline 7-80 nm (CdS) of- 20-30 min (PbS) long nanorods. Spatial separation of the photogenerated charge carriers in CdS/TiO2 and FbS/TiO2 nanocomposites Was assumed to be the driving force ofthe formation of such elongated metal sulfide nanoparticle agglomerates. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：137 / 144

页数：8

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