| 活性炭负载N掺杂TiO_2光催化剂的制备及其可见光催化活性研究 |
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| 引用本文： | 胡华国,王玉萍,顾凌燕,彭盘英.活性炭负载N掺杂TiO_2光催化剂的制备及其可见光催化活性研究[J].南京师大学报,2010,33(1). |
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| 作者姓名： | 胡华国 王玉萍 顾凌燕 彭盘英 |
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| 作者单位： | 南京师范大学化学与环境科学学院; |
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| 基金项目： | 江苏省自然科学基金(BK2009409);;南京师范大学“211工程”三期重点学科建设基金 |
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| 摘 要： | 以尿素为N源、以钛酸四丁酯和乙醇为原料,采用溶胶凝胶法制备N掺杂TiO2,并用浸渍法将TiO2负载于粒状活性炭上,通过烧结制成N-TiO2/AC光催化剂.并利用TG-DTA、XRD、BET对催化剂的结构、尺寸等特征进行分析和表征,同时考察了亚甲基蓝溶液初始浓度、催化剂用量、亚甲基蓝溶液pH值、催化剂负载次数对N-TiO2/AC光催化剂在可见光下降解亚甲基蓝的影响.其结果表明负载于活性炭上的N-TiO2平均粒径约为9.3 nm,晶型为锐钛矿型,其比表面积为746.9 m2/g.最佳条件下在亚甲基蓝溶液初始浓度为100 mg/L、制备催化剂用量为0.4 g,亚甲基蓝溶液pH值为1.0时,经100 W钨灯5 h照射后,亚甲基蓝的去除率为91.43%,相同条件下比N-TiO2和纯TiO2催化剂活性分别提高了2.580倍和65.31倍.
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| 关 键 词： | N掺杂 活性炭 负载催化剂 亚甲基蓝 |
Preparation of Nitrogen-doped TiO_2/Activated Carbon and Photocatalytic Activity Under Visible Light |
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| Hu Huaguo,Wang Yuping,Gu Lingyan,Peng Panying.Preparation of Nitrogen-doped TiO_2/Activated Carbon and Photocatalytic Activity Under Visible Light[J].Journal of Nanjing Normal University(Natural Science Edition),2010,33(1). |
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| Authors: | Hu Huaguo Wang Yuping Gu Lingyan Peng Panying |
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| Institution: | School of Chemistry and Environmental Science/a>;Nanjing Normal University/a>;Nanjing 210097/a>;China |
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| Abstract: | N-doped TiO2 photocatalysts were fabricated by mixing tetrabutyl titanate with urea in ethanol and water by sol-gel method,and immobilized to granular activated carbon by coating.The prepared N-TiO2/AC was characterized by XRD,TG-DTA,FT-IR,BET.The effect of various experimental parameters on the photocatalytic activity of N-TiO2/AC photocatalysts were investigated,which involved loading times,N-TiO2/AC amount,pH value of methylene blue,and initial concentration of Methylene blue.The results showed that the ... |
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| Keywords: | N-doped activated carbon supported catalysts methylene blue |
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