| ZnO纳米颗粒沉积增强TiO_2纳米管光催化活性 |
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| 引用本文： | 李平,路海霞,曾志军,李元,聂明,梁宏,覃礼钊.ZnO纳米颗粒沉积增强TiO_2纳米管光催化活性[J].北京师范大学学报(自然科学版),2012,48(1):33-36. |
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| 作者姓名： | 李平 路海霞 曾志军 李元 聂明 梁宏 覃礼钊 |
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| 作者单位： | 西南大学材料科学与工程学院,重庆,400715;北京师范大学射线束技术与材料改性教育部重点实验室,北京,100875;西南大学材料科学与工程学院,重庆400715／北京师范大学射线束技术与材料改性教育部重点实验室,北京100875 |
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| 基金项目： | 西南大学博士基金资助项目，射线束技术与材料改性教育部重点实验室开放课题资助项目 |
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| 摘 要： | 采用阳极氧化法制备TiO2纳米管,用光化学沉积法、将纳米管浸没在硝酸锌(Zn(NO3)2)溶液中,在纳米管表面沉积ZnO纳米颗粒.对样品进行了Raman谱、XRD和SEM表征.结果显示,TiO2纳米管为锐钛矿相,沉积ZnO没有改变TiO2的相结构.用甲基橙在紫外光辐照下的降解速率来评价ZnO/TiO2纳米管的催化活性.结果表明,Zn(NO3)2浓度为10-4 mol.L-1时制备的ZnO/TiO2纳米管,其降解甲基橙的活性最高,效率提高40.7%.
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| 关 键 词： | TiO2纳米管 ZnO纳米颗粒 ZnO/TiO2复合纳米光催化剂 |
ENHANCEMENT OF PHOTOCATALYTIC ACTIVITY OF TiO2 NANOTUBES BY DEPOSITION OF ZnO NANOPARTICLES |
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| LI Ping,LU Haixia,ZENG Zhijun,LI Yuan,NIE Ming,LIANG Hong,QIN Lizhao.ENHANCEMENT OF PHOTOCATALYTIC ACTIVITY OF TiO2 NANOTUBES BY DEPOSITION OF ZnO NANOPARTICLES[J].Journal of Beijing Normal University(Natural Science),2012,48(1):33-36. |
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| Authors: | LI Ping LU Haixia ZENG Zhijun LI Yuan NIE Ming LIANG Hong QIN Lizhao |
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| Institution: | 1,2)(1)School of Material Science and Engineering,Southwest University,400715,Chongqing,China; 2)Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University,100875,Beijing,China) |
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| Abstract: | TiO2 nanotubes were fabricated by anodic oxidation,ZnO nanoparticles were deposited on the surface of TiO2 nanotubes by optical chemical deposition technique with dipping the TiO2 nanotubes in Zn(NO3)2 aqueous solution.The final product was characterized by Raman and XRD spectroscopy,and by SEM.Data indicated that the TiO2 nanotubes were in anatase phase and ZnO nanoparticle deposition did not change the crystalline phase of TiO2.Photocatalytic activity of the photocatalyst was estimated by testing degradation rate constant of methyl orange aqueous solution under UV irradiation.With a precursor concentration of Zn(NO3)2 at 10-4 mol·L-1,the ZnO/TiO2 composite nano-photocatalyst showed the highest photocatalytic activity.The degradation efficiency was increased by 40.7%. |
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| Keywords: | TiO2 nanotube ZnO nanoparticle ZnO/TiO2 composite nano-photocatalytist |
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