Optical Properties of Titanium-di-Oxide (TiO2) Prepared by Hydrothermal Method

被引:1
|
作者
Rahman, Kazi Hasibur [1 ]
Biswas, Sayari [1 ]
Kar, Asit Kumar [1 ]
机构
[1] Indian Inst Technol, Dept Appl Phys, Micro & Nanosci Lab, Indian Sch Mines, Dhanbad 826004, Jharkhand, India
关键词
PHOTOCATALYTIC ACTIVITY; DIOXIDE;
D O I
10.1063/1.5032357
中图分类号
O59 [应用物理学];
学科分类号
摘要
Research on titanate and its derived TiO2 nanostructures with large specific surface area have received great attention due to their enhanced efficiency in photocatalysis, DSSC etc. Here, in this communication TiO2 powder has been prepared by hydrothermal method at 180 degrees C. In this work we have shown the changes in optical properties of the powder with two different sintering temperatures. -500 degrees C and 800 degrees C. The as prepared powder was also studied. FESEM images show spherical particles for the as prepared samples which look more like agglomeration after sintering. Band gaps of the prepared samples were calculated from UV-Vis spectroscopy which lies in the range 2.85 eV. - 3.13 eV. The photoluminescence (PL) spectra of the prepared samples were recorded at room temperature in the range of 300. 700 nm. It shows two distinct peaks at 412 nm and 425 nm.
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页数:4
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