Microwave-assisted hydrothermal synthesis of N-doped titanate nanotubes for visible-light-responsive photocatalysis
Abstract
This study employs a rapid, energy frugal and environmental friendly method to synthesize nitrogen doped titanate nanotubes (NTNTs), and uses TEM, XRD, Raman, nitrogen adsorption–desorption isotherms analysis, and UV–vis spectroscopy to characterize the obtained NTNTs. TEM results demonstrate that the current research successfully synthesized one-dimensional NTNTs via the microwave hydrothermal (M-H) method, and show that NTNTs retain a tubular structure after sintering at a temperature of 350 °C. XRD results agree well with Raman spectrum findings. Both show that the intensity of anatase crystallization increases with an increase in sintering temperature. After sintering at high temperature, above 250 °C, the UV–vis absorbance edges of NTNTs significantly shift to the visible-light region, which illustrates N atom doping into nanotubes. Photocatalytic tests conclude that the NTNTs-350 shows good efficiency with visible-light response.
Additional Information
© 2010 Elsevier. Received 31 May 2010; revised 20 July 2010; accepted 20 July 2010. Available online 30 July 2010. This work was financially supported by the National Science Council, Taiwan (NSC 98-2211-E-002-040-MY3).Additional details
- Eprint ID
- 20549
- Resolver ID
- CaltechAUTHORS:20101026-151113177
- NSC 98-2211-E-002-040-MY3
- National Science Foundation Council, Taiwan
- Created
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2010-11-13Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field