Author:
Wu Ming-Chung,Chang Yin-Hsuan,Lin Ting-Han
Abstract
Abstract
The bismuth precursor is adopted as dopant to synthesize bismuth doped titanium
dioxide nanoparticles (Bi–TiO2 NPs) with sol–gel method
following by the thermal annealing treatment. We systematically developed a
series of Bi–TiO2 NPs at several calcination temperatures and
discovered the corresponding crystal structure by varying the bismuth doping
concentration. At a certain 650 °C calcination temperature, the crystal
structure of bismuth titanate (Bi2Ti2O7) is
formed when the bismuth doping concentration is as high as 10.0 mol %. The
photocatalytic activity of Bi–TiO2 NPs is increased by varying
the doping concentration at the particular calcination temperature. By the
definition X-ray diffraction (XRD) structural identification, a phase diagram of
Bi–TiO2 NPs in doping concentration versus calcination
temperature is provided. It can be useful for further study in the crystal
structure engineering and the development of photocatalyst.
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
8 articles.
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