2納米棒束;混晶TiO2;氮摻雜;可見光光催化"/> 2(N-TiO2)納米棒束,并利用X射線衍射(XRD)、透射電鏡(TEM)、紫外-可見光漫反射光譜(UV-Vis DRS)、傅里葉變換紅外光譜(FTIR)和X射線光電子能譜(XPS)等手段對(duì)獲得的樣品進(jìn)行了表征。以甲基橙為模型反應(yīng)物,評(píng)價(jià)了N-TiO2納米棒束的光催化活性。表征結(jié)果結(jié)合光催化活性評(píng)價(jià)結(jié)果顯示,與P25-TiO2相比,N摻雜、混晶及納米棒束之間的協(xié)同作用是所制備的混晶N-TiO2納米棒束具有良好光催化活性的主要原因,并對(duì)混晶N-TiO2納米棒束光催化降解甲基橙的機(jī)理進(jìn)行了探討。"/>

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無(wú)模板劑的溶膠-水熱法合成具有可見光響應(yīng)的氮摻雜混晶 TiO2(銳鈦礦/金紅石/板鈦礦)納米棒束
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1.內(nèi)蒙古自治區(qū)工業(yè)催化重點(diǎn)實(shí)驗(yàn)室;2.江蘇大學(xué) 綠色化學(xué)與化工技術(shù)研究院

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國(guó)家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）


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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1.School of Chemical Engineering,Inner Mongolia University of Technology;2.Institute of Green Chemistry and Chemical Technology,Jiangsu University

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    摘要:

    采用無(wú)模板劑的溶膠-水熱法制備了具有可見光響應(yīng)的N摻雜銳鈦礦/金紅石/板鈦礦型TiO2(N-TiO2)納米棒束,并利用X射線衍射(XRD)、透射電鏡(TEM)、紫外-可見光漫反射光譜(UV-Vis DRS)、傅里葉變換紅外光譜(FTIR)和X射線光電子能譜(XPS)等手段對(duì)獲得的樣品進(jìn)行了表征。以甲基橙為模型反應(yīng)物,評(píng)價(jià)了N-TiO2納米棒束的光催化活性。表征結(jié)果結(jié)合光催化活性評(píng)價(jià)結(jié)果顯示,與P25-TiO2相比,N摻雜、混晶及納米棒束之間的協(xié)同作用是所制備的混晶N-TiO2納米棒束具有良好光催化活性的主要原因,并對(duì)混晶N-TiO2納米棒束光催化降解甲基橙的機(jī)理進(jìn)行了探討。

    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.

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劉正江,鮑曉麗,邢磊,楊桔材,張前程.無(wú)模板劑的溶膠-水熱法合成具有可見光響應(yīng)的氮摻雜混晶 TiO2(銳鈦礦/金紅石/板鈦礦)納米棒束[J].稀有金屬材料與工程,2019,48(1):77~84.[Liu Zhengjiang, Bao Xiaoli, Xing Lei, Yang Jucai, 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.]
DOI：10.12442/j. issn.1002-185X.20170606

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  • 收稿日期:2017-07-10
  • 最后修改日期:2017-09-07
  • 錄用日期:2017-09-11
  • 在線發(fā)布日期: 2019-02-18
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