| 磁性微球负载光催化剂制备及处理造纸废水研究 |
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| 引用本文： | 顾生玖,朱开梅,黄耀峰,李寿芬.磁性微球负载光催化剂制备及处理造纸废水研究[J].环境科学与技术,2008,31(1):87-89. |
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| 作者姓名： | 顾生玖 朱开梅 黄耀峰 李寿芬 |
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| 作者单位： | 桂林医学院,广西桂林,541004 |
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| 基金项目： | 广西桂林市科技攻关计划
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广西自然科学基金 |
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| 摘 要： | 采用溶胶-凝胶法,在磁性颗粒表面包覆TiO2,制备了易于固液分离的磁载光催化剂TiO2/SiO2/Fe3O4,通过XRD和TEM对产物的晶体结构、晶粒大小、形貌进行了表征,讨论了焙烧温度、焙烧时间、催化剂用量和光照时间等对TiO2光催化剂处理造纸废水的影响。结果表明:焙烧温度为500℃、焙烧时间3.5h时,光催化活性最高;催化剂用量为2.5g/L,光照时间4h时TiO2降解造纸废水的能力最强。
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| 关 键 词： | 磁载 光催化剂 光催化活性 造纸废水 |
| 文章编号： | 1003-6504（2008）01-0087-03 |
| 收稿时间： | 2007-09-03 |
| 修稿时间： | 2007-10-25 |
Preparation and Treatment of Papermaking Wastewater with Novel Magnetic Photocatalyst |
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| GU Sheng-jiu,ZHU Kai-mei,HUANG Yao-feng,LI Shou-fen.Preparation and Treatment of Papermaking Wastewater with Novel Magnetic Photocatalyst[J].Environmental Science and Technology,2008,31(1):87-89. |
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| Authors: | GU Sheng-jiu ZHU Kai-mei HUANG Yao-feng LI Shou-fen |
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| Abstract: | The photoactive TiO2 was deposited on the surface of magnetic particles using sol-gel coating technique to prepare a novel nanometer-sized magnetic photocatalyst TiO2/SiO2/Fe3O4,and were characterized by means of XRD and TEM,with analysis of effects of calcining temperature and time,catalyst amount as well as radiant time on papermaking wastewater degradation.Experimental results showed that calcinations at 500℃ for 3.5h exhibited a higher photocatalytic activity,and at the optimal conditions as quantity of catalyst 2.5g/L(TiO2) and radiant time 4h,the removal efficiency of papermaking wastewater was over 80%. |
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| Keywords: | magnetic carriage photocatalyst photocatalytic activity papermaking wastewater |
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