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N、S共掺TiO2光催化剂的合成及其在废水处理中的应用 被引量：4

N,S-CODOPED TiO_2 PHOTOCATALYST:SYNTHESIS & ITS APPLICATION IN THE TREATMENT OF WASTE-WATER
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摘要 采用溶胶-凝胶法制备了N、S共掺TiO2光催化剂,借助X-射线衍射(XRD)、光电子能谱(XPS)、紫外-可见吸收光谱(UV-vis)等测试手段对样品进行表征,并以罗丹明B为模型污染物考察了样品光催化活性.XRD物相鉴定表明,所得TiO2催化剂为锐钛矿和金红石矿的混合型,金红石型的含量在15.2%—10.6%之间,N和S掺杂可有效抑制金红石相的生成;光催化降解实验结果表明,N、S共掺光催化剂具有良好的可见光催化活性,自然光照射10h,N、S共掺催化剂(1.0%N-0.25%S-TiO)对工业废水COD的去除率高达97.2%. N,S-codoped TiO2 photocatalysts were prepared by a sol-gel process.The prepared photocatalysts were characterized by XRD,XPS and UV-vis spectroscopic techniques.Rhodamine B was chosen as the model pollutant to evaluate the photocatalytic activity of the photocatalyst.XRD results revealed that all of the as-prepared samples were anatase and rutile mixed-phase nano-TiO2.And the content of rutile was 15.2%—10.6%.Photocatalytic experiment results showed that N,S codoped nano-TiO2 exhibited high photocatalytic activity.COD removal of tobacco factory wastewater was 97.2% under sun-light irradiation for 10h.
作者 王丹军 郭莉 李东升 付锋 高利锋 张理平
机构地区 延安大学化学与化工学院 三峡大学机械与材料学院
出处 《环境化学》 CAS CSCD 北大核心 2010年第5期842-847,共6页 Environmental Chemistry
基金 国家自然科学基金(No.20773104) 教育部新世纪优秀人才支持计划基金(No.NCET-06-0891),教育部重点科研基金(No.208143) 陕西省重点实验室重点科研基金(No.08JZ81) 陕西省科技厅科研基金(No.2007-119) 陕西省教育厅科研基金(No.07JK435,09JK817)资助项目
关键词 二氧化钛 N、S共掺TiO2 光催化 可见光活性 titanium dioxide N S-codoped TiO2 photocatalysis visible light activity.
分类号 X703 [环境科学与工程—环境工程]
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参考文献20

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共引文献7

同被引文献75

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引证文献4

二级引证文献37

环境化学
2010年 第5期

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