| 徐玲,王丽丽,刘建华,吕茂萍.铁掺杂TiO 2-SBA-15催化剂制备及光催化降解甲基橙研究[J].,2016,56(4):335-340 |
| 铁掺杂TiO 2-SBA-15催化剂制备及光催化降解甲基橙研究 |
| Research on preparation of iron doped TiO 2-SBA-15 catalyst and photocatalytic degradation of methyl orange |
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| DOI：10.7511/dllgxb201604002 |
| 中文关键词:铁掺杂TiO 2分子筛光催化 |
| 英文关键词:Fe dopingTiO 2molecular sievephoto-catalysis |
| 基金项目:国家自然科学基金资助项目(21561024)；内蒙古自然科学基金资助项目(2015MS0222). |
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| 摘要点击次数:1628 |
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| 中文摘要: |
| 采用溶胶-凝胶法，将TiO 2负载到介孔分子筛SBA-15上，再通过FeCl 3浸渍的方法，将不同量的铁掺杂到TiO 2-SBA-15上．通过FT-IR、XRD、N 2吸附-脱附和TEM等手段对铁掺杂TiO 2-SBA-15催化剂进行表征．结果表明 负载TiO 2后的SBA-15依然为高度有序的二维六方结构，比表面积略有减小，说明SBA-15的孔道结构有利于TiO 2的分散．掺铁后的TiO 2-SBA-15的结构改变不大，且TiO 2晶形仍为锐钛矿型．最后以光催化降解甲基橙探究不同铁掺杂量的TiO 2-SBA-15催化活性．结果表明 铁离子掺杂量为0.035%(质量分数)，紫外光照射200 min时，甲基橙降解率达最高值98.2%． |
| 英文摘要: |
| By sol-gel method TiO 2 is loaded on mesoporous molecular sieve SBA-15. The catalysts which have different contents of iron, are obtained by impregnating FeCl 3 onto TiO 2-SBA-15. The catalysts are characterized by FT-IR, XRD, N 2 adsorption-desorption and TEM. The characterization results indicate that the TiO 2 loaded SBA-15 still has highly ordered 2-dimensional hexagonal structure and the BET surface area is slightly decreased, which demonstrate that the channel of SBA-15 is beneficial to the scatter of the TiO 2. The structure of TiO 2-SBA-15 has not changed too much after doping with iron. The crystalline form of TiO 2 is still anatase. The catalytic activity of iron doped TiO 2-SBA-15 is investigated by photocatalytic degradation of methyl orange. The photo-catalysis results reveal that when the doped content of iron is 0.035% (the mass fraction) and UV radiation time is 200 min, the degradation rate can reach maximum of 98.2%. |
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