| 铁铈共掺TiO_2/复合白土光催化剂的合成及工业废水处理活性 |
| |
| 引用本文： | 王丹军,郭莉,李东升,付峰,张理平,高利峰.铁铈共掺TiO_2/复合白土光催化剂的合成及工业废水处理活性[J].硅酸盐通报,2010,29(1). |
| |
| 作者姓名： | 王丹军 郭莉 李东升 付峰 张理平 高利峰 |
| |
| 作者单位： | 1. 延安大学化学与化工学院,延安,716000
2. 延安大学化学与化工学院,延安,716000;三峡大学机械与材料学院,宜昌,443002 |
| |
| 基金项目： | 国家自然科学基金(20773104);;教育部新世纪优秀人才支持计划(NCET-06-0891);;教育部重点科研基金(208143);;陕西省教育厅专项科研基金(07JK435,09JK817);;陕西省重点实验室重点科研基金(08JZ81);;延安大学科研基金项目(KYQD2008-001) |
| |
| 摘 要： | 以钛酸四正丁酯为原料,采用溶胶-微波法(Sol-microwave method)合成了铁和铈共掺型纳米TiO2粉体(Fe-Ce-TiO2),借助XRD、XPS和UV-vis等测试手段对其进行了表征,并以甲基橙为模型污染物考察了掺杂量对样品光催化活性的影响规律。XRD分析表明,所得粉体均为锐钛矿相纳米TiO2,且过渡金属铁和元素稀土铈掺杂后纳米TiO2特征衍射峰宽化,强度降低;XPS分析表明,镧和铈掺杂后样品表面存在大量的氧缺位;UV-vis吸收光谱表明,所得粉体在400nm以下均有连续宽化的吸收带,且Fe和Ce掺杂后样品对光的吸收显著增强,这是由于Ce(Ⅳ)f→d跃迁和Ce(Ⅳ)-O荷移跃迁所致;光催化实验表明,Fe和Ce共掺杂能显著提高纳米TiO2的光催化活性,其中当Fe(Ⅲ)和Ce(Ⅳ)掺杂量分别为0.1%和0.04%时,纳米TiO2光催化剂具有较高的催化活性,自然光照下光催化氧化处理卷烟厂蒸叶车间废水,效果较好,废水COD去除率达到89.8%。且催化剂易沉降分离、重复使用性能稳定。
|
| 关 键 词： | 纳米TiO2 铁铈掺杂 溶胶-微波法 活性白土 光催化性能 |
Preparation of Fe-Ce-codoping/Active Bleaching Clay Composite Photocatalyst and Its Photocatalytic Property in Factory Wastewater |
| |
| WANG Dan-jun,GUO Li,LI Dong-sheng,FU Feng,ZHANG Li-ping,GAO Li-feng.Preparation of Fe-Ce-codoping/Active Bleaching Clay Composite Photocatalyst and Its Photocatalytic Property in Factory Wastewater[J].Bulletin of the Chinese Ceramic Society,2010,29(1). |
| |
| Authors: | WANG Dan-jun GUO Li LI Dong-sheng FU Feng ZHANG Li-ping GAO Li-feng |
| |
| Affiliation: | 1.Department of Chemistry and Chemical Engineering;Yan'an 716000;China;2.College of Mechanical and Material Engineering;Three Gorges University;Yichang 443002;China |
| |
| Abstract: | Fe-Ce codoping nano-TiO2 catalyst was synthesized by microwave-assisted sol process.XRD,XPS and UV-vis absorption spectroscopy techniques were applied to investigate spectrum properties of Fe-Ce codoping TiO2 nanoparticles. All of the as-synthesized samples were indicated to be pure anatase phase nano-TiO2 under XRD measurement and its' diffraction peak broadened obviously after Fe and Ce doping. Results of XPS analysis revealed that many oxygen vacancies were produced in the surface of TiO2 nanoparticles a... |
| |
| Keywords: | nano-TiO2 Fe-Ce-codoping microwave-assisted sol process active bleaching clay photocatalytic activity |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
