Controllable preparation of flower-like brookite TiO{sub 2} nanostructures via one-step hydrothermal method

Journal Article · Mon Aug 15 00:00:00 EDT 2016 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2016.04.007· OSTI ID:22581599

Zou, Yunling ^[1]; Tan, Xin ^[2]; Yu, Tao ^[1]; Li, Yan; Li, Yimei; Wang, Ru; Xue, Lingqian ^[3]

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1. School of Chemical Engineering, Tianjin University, Tianjin 300072 (China)
2. School of Science, Tibet University, Lhasa 850000 (China)
3. College of Science, Civil Aviation University of China, Tianjin 300300 (China)

Highlights: • Flower-like brookite TiO{sub 2} structures were prepared by hydrothermal method. • PVP not only acted as a dispersant but also stabilized the layered structure. • The resulted brookite TiO{sub 2} showed high photocatalytic activity under UV irradiation. - Abstract: Flower-like brookite TiO{sub 2} nanostructures were controllable prepared by a one-step hydrothermal method by changing experimental conditions, such as hydrothermal temperature, reaction time and the amount of polyvinylpyrrolidone. The photocatalytic activities of the samples were investigated by degradation of methylene blue (MB) in aqueous solution under UV light irradiation. It was found that the formation of brookite TiO{sub 2} nanostructures with various morphologies could be well controlled by the adjustment of hydrothermal temperature, reaction time and the amount of surfactant, and the morphology of the products changed from spindle-like structures to flower-like structures with the increase of hydrothermal temperature, reaction time and the amount of surfactant. The photocatalytic tests indicate that the flower-like brookite TiO{sub 2} nanostructures shows high photocatalytic activity in degradation of methylene blue (MB) under UV light irradiation. The formation mechanism of flower-like brookite TiO{sub 2} nanostructures was also discussed in detail based on the above investigations.

• OSTI ID: 22581599
• Journal Information: Materials Research Bulletin, Vol. 80; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AQUEOUS SOLUTIONS
CRYSTAL STRUCTURE
ELECTRON MICROSCOPY
HYDROTHERMAL SYNTHESIS
IRRADIATION
METHYLENE BLUE
MORPHOLOGY
NANOSTRUCTURES
PHOTOCATALYSIS
PVP
RAMAN SPECTROSCOPY
SURFACTANTS
TEMPERATURE DEPENDENCE
TITANIUM OXIDES
ULTRAVIOLET RADIATION
X-RAY DIFFRACTION