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Materials and Manufacturing Processes Volume 29, 2014 - Issue 10
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Original Articles

Synthesis of N-doped TiO2 with Different Nitrogen Concentrations by Mild Hydrothermal Method

Junna Xu School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
,
Peng Sun School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
,
Xin Zhang School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
,
Peng Jiang School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
,
Wenbin Cao School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, ChinaCorrespondence[email protected]
,
Pengwan Chen School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
&
Haibo Jin School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
 show all
Pages 1162-1167 | Received 28 Nov 2013, Accepted 13 Apr 2014, Published online: 10 Sep 2014
 
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Abstract

Nitrogen-doped nanocrystalline anatase TiO2 powders with different nitrogen-doping concentrations were synthesized at 150°C and held for 2 h under an initial pressure of 3 MPa by the mild hydrothermal method with no postheat treatment. The X-ray photoelectron spectroscopy results confirmed that substitutional and interstitial nitrogen coexisted in the TiO2 lattice and formed Ti–N and Ti–O–N linkages, respectively. The visible light absorption of nitrogen-doped TiO2 in the wavelength 400 ∼ 550 nm was greatly enhanced compared with that of un-doped TiO2. Both optical absorption and photocatalytic efficiency were elevated with increased nitrogen-doping concentration.

Notes

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