Crystal Design and Photoactivity of TiO2 Nanorod Template Decorated with Nanostructured Bi2S3 Visible Light Sensitizer

In this study, TiO2-Bi2S3 composites with various morphologies were synthesized through hydrothermal vulcanization with sputtering deposited Bi2O3 sacrificial layer method on the TiO2 nanorod templates. The morphologies of decorated Bi2S3 nanostructures on the TiO2 nanorod templates are controlled b...

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Bibliographic Details
Published in:International journal of molecular sciences 2022-10, Vol.23 (19), p.12024
Main Authors: Liang, Yuan-Chang, You, Shao-Yu, Chen, Bo-Yue
Format: Article
Language:English
Subjects:
Arrays
Bismuth oxides
Bismuth sulfides
Bismuth trioxide
Composite materials
composites
Crystals
Decoration
Efficiency
Light
Metal oxides
Morphology
Nanotechnology
Nanowires
photoactivity
Photodegradation
Photoelectric effect
Rhodamine
Scanning electron microscopy
Solar energy
Spectrum analysis
Titanium dioxide
Vulcanization
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Summary:In this study, TiO2-Bi2S3 composites with various morphologies were synthesized through hydrothermal vulcanization with sputtering deposited Bi2O3 sacrificial layer method on the TiO2 nanorod templates. The morphologies of decorated Bi2S3 nanostructures on the TiO2 nanorod templates are controlled by the duration of hydrothermal vulcanization treatment. The Bi2S3 crystals in lumpy filament, nanowire, and nanorod feature were decorated on the TiO2 nanorod template after 1, 3, and 5 h hydrothermal vulcanization, respectively. Comparatively, TiO2-Bi2S3 composites with Bi2S3 nanowires exhibit the best photocurrent density, the lowest interfacial resistance value and the highest photodegradation efficiency towards Rhodamine B solution. The possible Z-scheme photoinduced charge separation mechanism and suitable morphology of Bi2S3 nanowires might account for the high photoactivity of TiO2 nanorod-Bi2S3 nanowire composites.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms231912024