Self-assembled mesoporous TiO2 spherical nanoparticles by a new templating pathway and its enhanced photoconductivity in the presence of an organic dye

被引:78
作者
Patra, Astam K. [1 ]
Das, Swapan K. [1 ]
Bhaumik, Asim [1 ]
机构
[1] Indian Assoc Cultivat Sci, Dept Mat Sci, Kolkata 700032, India
关键词
HIGH SURFACE-AREAS; NANOCRYSTALLINE TIO2; NANOTUBE ARRAYS; SOLAR-CELLS; LIQUID; TITANIA; DEVICE; ROUTE; OXIDE;
D O I
10.1039/c0jm02937h
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 supramolecular assembly of ionic/non-ionic surfactants has been extensively employed as a template or structure directing agent (SDA) in the synthesis of a large variety of mesoporous materials over the past one and a half decades. Herein, we report the first highly efficient synthesis strategy for self-assembled mesoporous TiO2 materials with well-defined crystal morphologies using sodium salicylate as a template. Mesoporous TiO2 nanoparticles showed a drastically enhanced photoelectrochemical response under visible light irradiation after entrapping a photosensitizer molecule (dye) inside the mesopores. The efficient synthesis strategy and enhanced photoresponse of these mesoporous TiO2 materials could facilitate the design of other porous semiconductor oxides and their applications in photon-to-electron conversion processes.
引用
收藏
页码:3925 / 3930
页数:6
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