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| 掺Mo~(6+)附Ag纳米TiO_2在可见光下降解酸性大红3R | |
| 引用本文： | 张鹏飞,赵甜香,闻立时.掺Mo~(6+)附Ag纳米TiO_2在可见光下降解酸性大红3R[J].粉末冶金材料科学与工程,2010,15(3):246-251. |
| 作者姓名： | 张鹏飞 赵甜香 闻立时 |
| 作者单位： | 1. 中南大学,化学化工学院,长沙,410083 2. 中南大学,物理科学与技术学院,长沙,410083 3. 中南大学,化学化工学院,长沙,410083;中国科学院金属研究所,沈阳,110016 |
| 基金项目： | 湖南省自然科学基金资助项目 |
| 摘 要： | 通过溶胶-凝胶法结合光催化还原法制备掺Mo6+附Ag的TiO2纳米颗粒,并在可见光下对酸性大红3R进行降解实验,研究其在可见光下的催化活性,并与纯TiO2、仅掺Mo6+或仅附Ag的TiO2进行对比。进一步讨论在可见光照射下掺杂量、焙烧温度等因素对掺Mo6+附Ag纳米TiO2降解性能的影响。结果表明:可见光下Ag/Mo6+/TiO2比纯TiO2、仅掺Mo6+或仅附Ag的TiO2显示出更高的活性,这是因为金属Mo6+的掺杂和贵金属银的沉积使二氧化钛的吸收带边发生红移,拓宽了可见光的响应范围;Ag/Mo6+/TiO2催化剂的催化活性最高时的Mo6+掺杂量为4.5%,银的附着量为2%。焙烧温度为500℃,这种掺Mo6+附Ag纳米TiO2对酸性大红3R的降解率可达87.6%. |
| 关 键 词： | 可见光 降解 红移 酸性大红3R |
Photo-degradation of acid red 3R by using Mo~(6+) doped and Ag loaded TiO_2 nanoparticles under visible light |
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| ZHANG Peng-fei,ZHAO Tian-xiang,WEN Li-shi.Photo-degradation of acid red 3R by using Mo~(6+) doped and Ag loaded TiO_2 nanoparticles under visible light[J].materials science and engineering of powder metallurgy,2010,15(3):246-251. | |
| Authors: | ZHANG Peng-fei ZHAO Tian-xiang WEN Li-shi |
| Affiliation: | ZHANG Peng-fei1,ZHAO Tian-xiang2,WEN Li-shi1,3(1.School of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China,2.School of Physics Science and Technology,3.Institute of Metal Research,Chinese Academy of Sciences,Shengyang 110016,China) |
| Abstract: | Mo6+ doped and Ag loaded TiO2 nanoparticles were synthesized using sol-gel and photo-catalytic reduction methods.The photocatalytic activity of Mo6+ doped and Ag loaded TiO2 nanoparticles were studied by some experiments for the decomposition of Acid Red 3R under visible light.In the present paper,compared with 2.0%(mass fraction) Ag loaded and 4.5% Mo6+ doped TiO2 and pure TiO2 as well as only Mo+ doped or only Ag loaded TiO2,effects of the amounts of Mo6+doped and Ag loaded and calcination temperature on ... |
| Keywords: | visible light degradation red shift acid red 3R |
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