Self-Assembled TiO2 Nanospheres By Using a Biopolymer as a Template and Its Optoelectronic Application

被引：77

作者：

Dutta, Saikat ^{[1
]}

Patra, Astam K. ^{[2
]}

De, Sudipta ^{[1
]}

Bhaumik, Asim ^{[2
]}

Saha, Basudeb ^{[1
]}

机构：

[1] Univ Delhi, Catalysis Lab, Dept Chem, Delhi 110007, India

[2] Indian Assoc Cultivat Sci, Dept Mat Sci, Kolkata 700032, India

来源：

ACS APPLIED MATERIALS & INTERFACES | 2012年 / 4卷 / 03期

关键词：

self-assembly of nanoparticles; photoconductivity; biopolymer templating; mesoporous materials; TiO2; SENSITIZED SOLAR-CELLS; ENHANCED PHOTOCATALYTIC ACTIVITY; MESOPOROUS TITANIA; NANOTUBE ARRAYS; MICROSPHERES; PERFORMANCE; GEL; DEGRADATION; ABSORPTION; ELECTRODES;

D O I：

10.1021/am201759w

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

Self-assembled TiO2 nanoparticulate materials with well-defined spherical morphologies were synthesized by using a biopolymer sodium alginate as a template under different synthesis conditions. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) techniques were used to characterize the TiO2 nanoparticles. N-2 sorption analysis revealed the moderately good surface area (124.0 m(2) g(-1)) and pore volume (0.44 cm(3) g(-1)) of these TiO2 nanoparticles. The biopolymer templating pathway leads to good-quality self-assembled TiO2 nanoparticles with dimensions of ca. 10-12 nm within the synthesis temperature range of 0-60 degrees C. These porous TiO2 nanomaterials showed high photogenerated current in the presence of a dye (Rose Bengal), used as a sensitizer for several photo on/off cycles.

引用

页码：1560 / 1564

页数：5

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