| 纳米La~(3+)-TiO_2薄膜制备及其处理含碱炼油废水 |
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| 引用本文： | 牛显春,周建敏,伍尚晃.纳米La~(3+)-TiO_2薄膜制备及其处理含碱炼油废水[J].水处理技术,2010,36(2). |
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| 作者姓名： | 牛显春 周建敏 伍尚晃 |
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| 作者单位： | 1. 茂名学院化工与环境工程学院,广东茂名,525000
2. 茂名学院化学与生命科学学院,广东茂名,525000 |
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| 基金项目： | 2007年茂名学院科学研究基金 |
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| 摘 要： | 采用溶胶凝胶法制备在玻璃上负载纳米La~(3+)-TiO_2薄膜,以罗丹明B水溶液的COD的去除率为指标,研究了各种因素对溶胶胶凝过程及制得纳米La~(3+)-TiO_2薄膜光催化活性的影响,用XRD和IR表征,并时含碱炼油废水进行光催化处理.结果表明,影响因素及最佳量依次是La掺杂量质量分数0.05%、煅烧温度480℃、乙醇的加入量50mL和加水量1..mL,此时罗丹明B的降解率达到91%;当含碱炼油废水中pH=5,负载薄膜2层,光催化时间为3h时处理效果最佳,废水中cOD降解率为77%;所得的La~(3+)-TiO_2薄膜含有Ti-O-Ti结构,为锐钛矿型,平均粒径为11.2nm.
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| 关 键 词： | 纳米La~(3+)-TiO_2薄膜 罗丹明B 光催化 炼油废水 |
PREPARATION OF NANO-La~(3+)-TiO_2 FILMS AND ITS PHOTOCATALYSIS OF ALKALI REFINERY WASTEWATER |
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| Niu Xianchun,Zhou Jianmin,Wu Shanghuang.PREPARATION OF NANO-La~(3+)-TiO_2 FILMS AND ITS PHOTOCATALYSIS OF ALKALI REFINERY WASTEWATER[J].Technology of Water Treatment,2010,36(2). |
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| Authors: | Niu Xianchun Zhou Jianmin Wu Shanghuang |
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| Affiliation: | Niu Xianchun1,Zhou Jianmin2,Wu Shanghuang1 (1.College of Chemical , Environmental Engineering,Maoming College,Maoming 525000,China,2. College of Chemistry , Life Science,China) |
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| Abstract: | The nanometer La doping TiO2 film was prepared on the glass slide by sol-gel method with the removal of rhodamine B as an index. Six factors and their effect were studied, namely,the amount of C2H5OH,the amount of water, calcination temperature, calcination time, water adding ways and lanthanum-doped miscellaneous volume on the sol-gel process. And nano-La3+-TiO2 thin film photocatalytic activity was obtained with optimal formulations, rhodamine B; the best degradation rate reached 91%. The nano-La3+-TiO2 t... |
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| Keywords: | nano-La~(3+)-TiO_2 film thodamine B photocatalysis refinery wastewater |
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