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刘正江,鲍晓丽,邢磊,杨桔材,张前程.无模板剂的溶胶-水热法合成具有可见光响应的氮掺杂混晶 TiO2(锐钛矿/金红石/板钛矿)纳米棒束[J].稀有金属材料与工程(英文),2019,48(1):77~84.[Liu Zhengjiang,Bao Xiaoli,Xing Lei,Yang Jucai and Zhang Qiancheng.Template-free Sol-hydrothermal Synthesis of a Nitrogen Doped Anatase/rutile/brookite TiO2 Nano-rod Bundle for Visible Light Driven Photocatalysis[J].Rare Metal Materials and Engineering,2019,48(1):77~84.]
Template-free Sol-hydrothermal Synthesis of a Nitrogen Doped Anatase/rutile/brookite TiO2 Nano-rod Bundle for Visible Light Driven Photocatalysis
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Received:July 10, 2017  Revised:September 07, 2017
DOI:
Key words: Mixed-phase TiO2  Nitrogen doping  TiO2 nano-rod bundle  Visible light photocatalysis
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目)
Author NameAffiliation
Liu Zhengjiang,Bao Xiaoli,Xing Lei,Yang Jucai and Zhang Qiancheng  
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Abstract:
      Nitrogen doped anatase/rutile/brookite titanium dioxide (N-TiO2) regular nano-rod bundle photocatalyst for improving visible light photocatalytic activity was prepared through a template-free sol-hydrothermal method. The properties of the materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet-visible diffuse reflectance spectra (UV-Vis DRS), Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). Photocatalytic degradation of methyl orange (MO) in an aqueous solution under visible light irradiation was used as a probe reaction to evaluate the photocatalytic activity of the mixed-phase N-TiO2 nano-rod bundle. The results of characterization combined with photocatalytic activity of MO photodegradation showed that the synergistic effects among N doping, mixed-phase and nano-rod bundle structure were the main reason to improve photocatalytic activity of mixed-phase N-TiO2 nano-rod bundle compared with P25-TiO2. The possible mechanism of MO degradation by mixed phase N-TiO2 nano-rod bundle photocatalyst was preliminarily discussed.