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不同前驱体制备氮掺杂二氧化钛及其光催化性能比较 被引量:2

Preparation of nitrogen-doped titanium dioxide from different precursors and comparison of their photocatalytic performance
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摘要 在氨气气氛中和不同温度下焙烧纳米管钛酸和商业Degussa-P25,得到两系列可见光响应型氮掺杂二氧化钛光催化剂.采用高分辨透射电子显微镜、紫外-可见漫反射光谱仪和X射线衍射仪对两系列样品的形貌、光谱吸收和晶体结构等物理化学性质进行了表征和比较.通过可见光光催化氧化丙烯评价系统对两系列样品的活性进行了评价.结果表明,600℃处理纳米管钛酸得到的催化剂可见光催化活性最好,是相同条件下处理Degussa-P25得到的催化剂(N-P25)活性的3.3倍.研究表明,纳米管钛酸是制备可见光响应型光催化剂较好的前驱体. Two kinds of visible-light-response nitrogen-doped titanium dioxide were prepared by thermal treatment of nanotubular titanic acid or Degussa-P25in flowing NH3.The physicochemical properties of resultant nitrogen-doped TiO2samples were investigated by means of transmission electron microscopy,diffuse reectance spectrometry,and X-ray diffraction.The visible light photocatalytic activity of the two kinds of nitrogen-doped samples was compared by monitoring the photocatalytic oxidation of propylene.It was found that the samples obtained with NTA as the precursor under 600℃shows the highest photocatalytic activity which is about 3.3times of that of the samples prepared with Degussa-P25as the precursor under the same conditions.The present research demonstrates that nanotubular titanic acid is a more promising precursor for designing and preparing visible-light-active photocatalyst.
出处 《化学研究》 CAS 2014年第4期417-422,共6页 Chemical Research
基金 国家自然科学基金(20973054) 河南省科学技术重点项目(14B150040) 河南大学科学研究基金(2012YBZR003)
关键词 纳米管钛酸 二氧化钛 氮掺杂 可见光 光催化 nanotubular titanic acid titanium dioxide nitrogen-doping visible light photoca-talysis
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  • 1FUJISHIMA A, HONDA K. Electrochemical photolysis of water at a semiconductor electrode [J]. Nature, 1972 I 238: 37 -38.
  • 2DAGHRIR R, DROGUI r. ROBERT D. Modified TiO, for environmental photocatalytic applications: A review [J]. Ind Eng Chern Res, 2013, 52: 3581-3599.
  • 3CHOl W, TERMIN A, HOFFMANN M R. The role of metal ion dopants in quantum-sized TiO,: correlation between photo reactivity and charge carrier recombination dynamics [J]. J Phys Chern, 1994, 98: 13669 -13679.
  • 4AN PO M. Photocatalysis on titanium oxide catalysts: approaches in achieving highly efficient reactions and realizing the use of visible light [J]. Catalysis Surveys from Japan, 1997. 1: 169-179.
  • 5ASAHI R, MORIKAWA T, OHWAKI T, et al. Visible-light photocatalysis in nitrogen-doped titanium oxides [J]. Science, 2001, 293: 269 - 271.
  • 6KHAN S, AL-SHAHRY M, INGLER W B. Efficient photochemical water splitting by a chemically modified n-TiO2[J]. Science, 2002, 297: 2243 - 2245.
  • 7LI Di, HANEDA H. LABHSETWAR N K, et al. Visible-light-driven photocatalysis on fluorine-doped TiO, powders by the creation of surface oxygen vacancies [J]. Chern Phys Lett. 2005. 401: 579-584.
  • 8CONG Shan. XU Yiming. Enhanced sorption and photodegradation of chlorophenol over fluoride-loaded Ti02[J]. J Hazard Mater, 2011, 192: 485-489.
  • 9BURDA C, LOU Y B, CHEN X B, et al. Enhanced nitrogen doping in TiO, nanoparticles [J]. Nano Lett, 2003, 3: 1049 -1051.
  • 10AlTA Y, KOMATSU M. YIN S. SA TO T. Phase-compositional control and visible light photocatalytic activity of nitrogen-doped titania via solvothermal process [J]. J Solid State Chern, 2004, 177: 3235 - 328.

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