2=0.2時(shí),成功制備以Ti4O7為主要物相的Magnéli相亞氧化鈦材料,其粒徑為400~600nm,樣品表面形成了大量的氧空位,表現(xiàn)出很強(qiáng)的紫外和可見光吸收性能。在可見光條件下光照130min時(shí),950℃焙燒20min,25min和35min條件下制備并酸洗后的Magnéli相亞氧化鈦降解亞甲基藍(lán)的效率分別達(dá)到37%,43%和62%。"/>

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鋁熱還原法制備Magnéli相亞氧化鈦及其可見光光催化活性研究
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作者單位:

1.四川省釩鈦工程技術(shù)研究中心;2.攀枝花學(xué)院

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四川省科技支撐項(xiàng)目


A novel route for preparation of Magnéli titanium suboxides by aluminothermic reductionand their photocatalytic activity under visible light
Author:
Affiliation:

Panzhihua University,International Research Institute of Vanadium and Titanium

Fund Project:

Science and Technology Support Program of Sichuan

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    摘要:

    采用鋁熱還原-鹽酸酸洗工藝成功制備了Magnéli相亞氧化鈦,通過X-ray diffraction (XRD), Scanning electron microscopy (SEM),UV-visible diffuse reflectance spectroscopy (UV-Vis DRS) 和X-ray photoelectron spectroscopy(XPS)等手段進(jìn)行表征表明：在焙燒溫度950℃,焙燒時(shí)間20min,Al/TiO2=0.2時(shí),成功制備以Ti4O7為主要物相的Magnéli相亞氧化鈦材料,其粒徑為400~600nm,樣品表面形成了大量的氧空位,表現(xiàn)出很強(qiáng)的紫外和可見光吸收性能。在可見光條件下光照130min時(shí),950℃焙燒20min,25min和35min條件下制備并酸洗后的Magnéli相亞氧化鈦降解亞甲基藍(lán)的效率分別達(dá)到37%,43%和62%。

    Abstract:

    Magnéli-phases titanium suboxides have been successfully prepared by our aluminum reduction-hydrochloric acid leaching route. The resulting sample was characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), UV-visible diffuse reflectance spectroscopy (UV-Vis DRS) and X-ray photoelectron spectroscopy(XPS).The Characterization results show that the mother phase was Ti4O7 of magnéli phase titanium oxide could be prepared at the calcination temperature of 950°C,roasting time for 20 min and the amount of aluminum was 0.2.The as-prepared magnéli-phase titanium suboxides samples with the diameters of 400~600nm, the surface of magnéli-phase titanium suboxides formation of oxygen vacancies, which has strong UV and visible-light absorption property. The degradation efficiency of 37%, 43%, and 62% was achieved for the as-prepared magnéli-phase titanium suboxides samples after visible light irradiation for 130min.

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李軍,吳恩輝,侯靜,黃平,蔣燕,徐眾,劉黔蜀.鋁熱還原法制備Magnéli相亞氧化鈦及其可見光光催化活性研究[J].稀有金屬材料與工程,2020,49(7):2281~2288.[Li Jun, Wu Enhui, Hou Jing, Jiang Yan, Huang Ping, Xu Zhong, Liu Qianshu. A novel route for preparation of Magnéli titanium suboxides by aluminothermic reductionand their photocatalytic activity under visible light[J]. Rare Metal Materials and Engineering,2020,49(7):2281~2288.]
DOI：10.12442/j. issn.1002-185X.20190320

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  • 收稿日期:2019-04-12
  • 最后修改日期:2019-07-02
  • 錄用日期:2019-07-24
  • 在線發(fā)布日期: 2020-08-31
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