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| 纳米TiO_2光催化降解次甲基蓝的影响因素研究 | |
| 引用本文： | 许璞,高善民,黄柏标,戴瑛,徐彦宾,李少英,朱先俊.纳米TiO_2光催化降解次甲基蓝的影响因素研究[J].微纳电子技术,2008,45(10). |
| 作者姓名： | 许璞 高善民 黄柏标 戴瑛 徐彦宾 李少英 朱先俊 |
| 作者单位： | 1. 鲁东大学,化学与材料科学学院,山东,烟台,264025 2. 鲁东大学,化学与材料科学学院,山东,烟台,264025;山东大学,晶体材料国家重点实验宣,济南,250100 3. 山东大学,晶体材料国家重点实验宣,济南,250100 |
| 摘 要： | 以TiCl4为原料,采用水解沉淀法,并在空气气氛下于不同温度煅烧2h,制备得到纳米TiO2。采用XRD、TEM及UV-Vis对样品进行表征。在卤钨灯照射下,研究了不同煅烧温度、不同pH值以及H2O2的加入等因素对TiO2光催化降解次甲基蓝的影响。结果表明:以水解沉淀法制备的纳米TiO2,随煅烧温度的提高,在600℃开始向金红石相转变,1000℃时全部转变为金红石相,并且TiO2粒子长大,吸收带边向长波方向移动。锐钛矿相与金红石相共存的纳米TiO2比纯锐钛矿相和金红石相有更优异的光催化活性,在卤钨灯下照射90min,对次甲基蓝的降解率达到97%。 |
| 关 键 词： | 纳米二氧化钛 锐钛矿相 金红石相 光催化 次甲基蓝 |
Study on Influencing Factors of Photocatalytic Degradation of Methylene Blue by Nano-TiO_2 |
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| Xu Pu,Gao Shanmin,Huang Baibiao,Dai Ying,Xu Yanbin,Li Shaoying,Zhu Xianjun.Study on Influencing Factors of Photocatalytic Degradation of Methylene Blue by Nano-TiO_2[J].Micronanoelectronic Technology,2008,45(10). | |
| Authors: | Xu Pu Gao Shanmin Huang Baibiao Dai Ying Xu Yanbin Li Shaoying Zhu Xianjun |
| Affiliation: | Xu Pu1,Gao Shanmin1,2,Huang Baibiao2,Dai Ying2,Xu Yanbin1,Li Shaoying1,Zhu Xianjun1(1.School of Chemistry , Materials Science,Ludong University,Yantai 264025,China,2.State Key Laboratory of Crystal Materials,Sh,ong University,Jinan 250100,China) |
| Abstract: | Nano-TiO2 particles were prepared by hydrolytic precipitation method using TiCl4 as the raw materials and then heat-treatment in ambient atmosphere at different temperatures for two hours.X-ray diffraction(XRD),transmission electron microscope(TEM)and UV-Vis absorbance spectroscopy were used to characterize the products.Because of the photocatalytic activity of nano-TiO2 prepared above,the methylene blue was degraded by photo-catalysis using halogen tungsten light.The effects of heat-treatment temperature,p... |
| Keywords: | nano-TiO2 anatase rutile photocatalytic methylene blue |
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