| 镨和氮共掺杂纳米TiO2光催化剂的制备与性能 |
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| 引用本文： | 吴晶,高攀,朱忠其,柳清菊.镨和氮共掺杂纳米TiO2光催化剂的制备与性能[J].中国有色金属学报,2011,21(6). |
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| 作者姓名： | 吴晶 高攀 朱忠其 柳清菊 |
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| 作者单位： | 云南大学云南省高校纳米材料与技术重点实验室,昆明,650091 |
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| 基金项目： | 国家自然科学基金资助项目，教育部新世纪优秀人才支持汁划资助项目，云南省自然科学基金资助项目 |
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| 摘 要： | 采用溶胶-凝胶法结合微波化学法制备高活性可见光响应型镨(Pr)和氮(N)共掺杂纳米TiO2光催化剂(Pr-N-TiO2).通过XRD、FT-IR、UV-Vis和TEM等手段对Pr-N-TiO2光催化剂样品进行表征和分析,并以亚甲基蓝(MB)作为目标降解物,考察Pr-N-TiO2光催化剂对MB的光催化降解效果.结果表明Pr和N共掺杂TiO2能有效地抑制TiO2的晶粒生长,共掺杂离子之间的协同作用使得Pr-N-TiO2光催化剂的光谱吸收阈值波长发生红移,荧光光谱强度明显降低,光催化活性显著提高；在日光灯下,6h内,Pr-N-TiO2光催化剂对MB的光催化降解率达92.81%,明显优于DegussaP25的(45.01%).
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| 关 键 词： | 纳米TiO2 光催化剂 共掺杂 光催化活性 微波化学法 |
Preparation and properties of praseodymium and nitrogen co-doped nano-titanium dioxide photocatalyst |
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| WU Jing,GAO Pan,ZHU Zhong-qi,LIU Qing-ju.Preparation and properties of praseodymium and nitrogen co-doped nano-titanium dioxide photocatalyst[J].The Chinese Journal of Nonferrous Metals,2011,21(6). |
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| Authors: | WU Jing GAO Pan ZHU Zhong-qi LIU Qing-ju |
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| Affiliation: | WU Jing,GAO Pan,ZHU Zhong-qi,LIU Qing-ju (Yunnan Key Laboratory of Nanomaterials and Technology,Yunnan University,Kunming 650091,China) |
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| Abstract: | The powders of high efficient visible-light-induced nano-TiO2 co-doped with praseodymium and nitrogen(Pr-N-TiO2) were prepared by sol-gel and microwave chemical methods.The samples were characterized by X-ray diffractometry(XRD),FT-IR,UV-Vis and TEM,respectively.The photocatalytic activity of samples was investigated by measuring the degradation rate of methyl blue(MB) under the irradiation of fluorescent lamp.The results indicate that Pr and N co-doping efficiently restrains the growth of TiO2 crystalline ... |
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| Keywords: | nano-TiO2 photocatalyst co-doping photocatalytic activity microwave chemical method |
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