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材料研究学报  2009, Vol. 23 Issue (1): 64-68    
  研究论文 本期目录 | 过刊浏览 |
含钛高炉渣催化剂的光催化活性
雷雪飞; 薛向欣
东北大学材料与冶金学院 沈阳 110004
The photocatalytic activity of titanium -bearing blast furnace slag
LEI Xuefei ; XUE Xiangxin
School of Materials and Metallurgy; Northeastern University; Shenyang 110004
引用本文:

雷雪飞 薛向欣. 含钛高炉渣催化剂的光催化活性[J]. 材料研究学报, 2009, 23(1): 64-68.
, . The photocatalytic activity of titanium -bearing blast furnace slag[J]. Chin J Mater Res, 2009, 23(1): 64-68.

全文: PDF(805 KB)  
摘要: 

以攀钢含钛高炉废渣为原料, 在不同温度下煅烧合成了钙钛矿型硫酸掺杂的含钛高炉渣催化剂(sulfuric acid-modified titanium-bearing blast furnace slag, STBBFS), 研究了混晶结构和硫掺杂对含钛高炉渣光催化活性的影响. 结果表明, 含钛高炉渣催化剂具有钙钛矿/锐钛矿混晶结构, 粉体的颗粒形状不规则, 煅烧后粒径变大; 在紫外区域具有很强的光吸收能力. STBBFS催化剂的光催化活性由Cr(VI)的还原率评价. 煅烧温度为400℃时, STBBFS催化剂的表面存在含量较高的SO2-4和较高的 CaTiO3/TiO2晶相比, 具有较高的光催化活性. 用500 W中压汞灯照射10 h, 可将浓度为 20 mg ? L-1的六价铬废水完全降解.

关键词 硫酸掺杂的含钛高炉渣催化剂;CaTiO3/TiO2晶相比;SO42−含量;光催化还原    
Abstract

Perovskite type sulfuric acid-modified titanium-bearing blast furnace slag (STBBFS) photocatalysts were prepared by the high energy ball milling method at different temperatures and characterized. Its photocatalytic activity was checked through the photocatalytic reduction of Cr(VI) as a model compound under UV-Vis light irradiation. The results showed that CaTiO3/TiO2 mixed crystal structure was found in STBBFS photocatalysts; the particle size increased with increasing calcinations temperature; the photocatalytic activities calcined at 400 oC showed a higher catalytic activity than other catalysts; the potocatalytic reduction efficiency of Cr(VI) reached 100% after 10 h.

Key wordsinorganic non-metallic materials    doping    photocatalytic reduction    sulfuric acid -modified titanium-bearing blast furnace slag
收稿日期: 2008-06-03     
ZTFLH: 

TB321

 
基金资助:

国家自然科学基金50274025、国家重点基础研究计划2007CB613504和教育部重大科技307009资助项目.

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