| 含钒金红石可见光下催化降解亚甲基蓝实验研究 |
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| 引用本文： | 杨磊,王长秋,鲁安怀,郭延军,刘菲,马生凤.含钒金红石可见光下催化降解亚甲基蓝实验研究[J].地学前缘,2005,12(Z1):184-188. |
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| 作者姓名： | 杨磊 王长秋 鲁安怀 郭延军 刘菲 马生凤 |
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| 作者单位： | 北京大学,地球与空间科学学院,北京,100871 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);中国科学院资助项目 |
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| 摘 要： | 利用含有钒等杂质的金红石可部分吸收可见光的特性,以500 W卤素灯作为光源,实验研究了其对亚甲基蓝的可见光催化降解,结果表明,该金红石具有催化活性,7 h后亚甲基蓝可降解71 2%。经过加热、粉碎改性方法处理后的金红石光催化活性明显提高,加热1 100 ℃的金红石样品7 h后可使亚甲基蓝的降解率达到90 4%。增加光照强度、加入适当的H2O2 都可提高降解效果。实验为充分开发利用天然金红石提出了新的途径,为环境污染治理提出了新方法。
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| 关 键 词： | 天然金红石 光催化 亚甲基蓝 可见光 |
| 文章编号： | 1005-2321(2005)S0-0184-05 |
| 修稿时间： | 2004年12月10 |
Photo-catalysis oxidation of methylene-blue by V-bearing rutile under visible light |
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| YANG Lei,WANG Chang-qiu,LU An-huai,GUO Yan-jun,LIU Fei,MA Sheng-feng.Photo-catalysis oxidation of methylene-blue by V-bearing rutile under visible light[J].Earth Science Frontiers,2005,12(Z1):184-188. |
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| Authors: | YANG Lei WANG Chang-qiu LU An-huai GUO Yan-jun LIU Fei MA Sheng-feng |
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| Abstract: | Rutile that contains impurities such as V, Fe, Cu, Zn, etc. can absorb part of visible light. Based on this characteristic, methylene-blue was decomposed by rutile as a target pollutant under 500 W halogen light; the results indicate that the V-bearing rutile has photo-catalytic capability under visible light; and methylene-blue has been photo-decomposed by 71.2% in 7 hours. Heating and pulverizing can improve the photo-catalysis; rutile of 1 100 ℃ can decompose methylene-blue by 90.4% in 7 hours. Reactions under different concentrations of H_2O_2 are investigated, which prove that H_2O_2 can improve the efficiency of TiO_2, but too much H_2O_2 may slow the reaction.This research provides a new method of purification for advancing the level of utilization of a natural mineral resource. |
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| Keywords: | rutile photo-catalysis methylene-blue visible light |
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