以硝酸作为氮源,钛精矿为原料,采用超声波复合高能球磨法,在不同煅烧温度下合成了硝酸掺杂的钛精矿催化剂(nitric acid-modified titanium ore,NATO).用X射线衍射(XRD)、傅立叶红外(FTIR)、紫外-可见漫反射光谱(UV-Vis)、差热-热重(TGDTA)和光致发光谱(PL)分析对NATO催化剂的结构和性能进行分析和表征,确定其由钛磁铁矿、钛铁矿、TiO2、钛铁氧化物等多种物相组成；在紫外-可见光区域都具有很强的光吸收能力.不同煅烧温度下,NATO催化剂的光催化活性由甲基橙的脱色率来评价,结果表明,煅烧温度为400℃时,NATO催化剂由于表面存在较高的硝酸盐含量和较高的可见光吸收能力及合适的晶相比,而具有较高的光催化活性,500W金卤灯照射1h,可将浓度为10mg/L的甲基橙废水完全降解.
参考文献
| [1] | 杨合,韩冲,李清伟,薛向欣.焙烧时间对钛酸钙光催化性能的影响[J].功能材料,2010(11):1888-1891,1895. |
| [2] | Lei X F;Xue X X .Preparation of perovskite type titanium-bearing blast furnace slag photocatalyst doped with sulphate and investigation on reduction Cr(Ⅵ)using UVVis light[J].Materials Chemistry and Physics,2008,112(03):928-933. |
| [3] | GONG Yue-qiu,ZHENG Xue-jun,GONG Lun-jun,MA Yin,ZHANG Da-zhi,DAI Shun-hong,LI Xu-jun.Effects of annealing temperature on microstructure and ferroelectric properties of Bi0.5(Na0.85K0.15)0.5TiO3 thin films[J].中国有色金属学报（英文版）,2010(10):1906-1910. |
| [4] | Fudong Liu;Kiyotaka Asakura;Hong He .Influence of sulfation on iron titanate catalyst for the selective catalytic reduction of NO_x with NH3[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2011(3/4):369-377. |
| [5] | Fudong Liua;Kiyotaka Asakurab;Hong He .Influence of calcination temperature on iron titanate catalyst for the selective catalytic reduction of NOx with NH3[J].Catalysis Today,2011(1):520-527. |
| [6] | 杨士建,何宏平,吴大清,陈冬,梁晓亮,马月红,袁鹏,朱建喜.钛磁铁矿异相Fenton法对亚甲基蓝模拟废水的脱色研究[J].环境化学,2009(05):697-701. |
| [7] | Peng Wenshi;Liu Gaokui.Infrared spectra of inorganic and coordination compounds[M].北京:科学出版社,1982:1-508. |
| [8] | 谢称福,李越湘,彭绍琴,吕功煊,李树本.伊红-Y敏化TiO2的制备及其可见光下光催化制氢性能[J].太阳能学报,2007(09):956-960. |
| [9] | Baltrusaitis J;Jensen JH;Grassian VH .FTIR Spectroscopy combined with isotope labeling and quantum chemical calculations to investigate adsorbed bicarbonate formation following reaction of carbon dioxide with surface hydroxyl groups on Fe(2)O3 and Al2O3[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2006(24):12005-12016. |
| [10] | Issei Tsuji;Hideki Kato;Akihiko Kudo .Visible-Light-Induced H2 Evolution from an Aqueous Solution Containing Sulfide and Sulfite over a ZnS-CuInS2-AgInS2 Solid-Solution Photocatalyst[J].Angewandte Chemie,2005(23):3565-3568. |
| [11] | Li F B;Li X Z .The enhancement of photodegradation efficiency using Pt-TiO2 catalyst[J].Chemosphere,2002,48(10):1103-1111. |
| [12] | 张高文,敖卫,杨侃,刘畅,刘嘉宁.煅烧温度对TiO_2中空微球光催化性能的影响[J].功能材料,2011(09):1642-1645. |
| [13] | Fang Jiang;Zheng Zheng;Zhaoyi Xu;Shourong Zheng;Zhaobing Guo;Liqiang Chen .Aqueous Cr(Ⅵ) photo-reduction catalyzed by TiO_2 and sulfated TiO_2[J].Journal of hazardous materials,2006(1/3):94-103. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%