Photocatalytic performances and characterizations of sea urchin-like N,Ce codoped TiO2 photocatalyst

被引：8
作者：
Wu Y. [1 ]
Zhou Y. [1 ]
Liu Y. [1 ]
Wang Y. [2 ]
Yang L. [1 ]
Li C. [1 ]
机构：
[1] Department of Chemical and Biological Engineering, Changsha University of Science & Technology, Changsha, 410114, Hunan
[2] Hunan Provincial Collaborative Innovation Center for Environment and Energy Photocatalysis, Changsha University, Changsha
来源：
Zhou, Yi (zhouyihn@aliyun.com) | 1600年 / Taylor and Francis Ltd.卷 / 21期
关键词：
Nanostructure; Photocatalytic; Solvothermal; Urchin-like;
D O I：
10.1080/14328917.2016.1168088
中图分类号：
学科分类号：
摘要：
We prepared sea urhcin-like N, Ce codoped TiO2 using a solvothermal method to reduce the recombination rate of photo-induced electron–hole pairs and improve sunlight utilization. Carbamide and cerium (III) nitrate hexahydrate served as the N and Ce sources, respectively. The prepared N-, Ce-codoped TiO2 with different content was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectra (XPS) and diffuse reflectance UV–vis spectroscopy. Results showed that the crystal phase of N-, Ce-codoped TiO2 samples contained both rutile and anatase phases. The XPS of N and Ce showed the appearance of Ce4+ and N1s. Meanwhile, the photocatalytic efficiency of prepared samples was investigated by the degradation of Rhodamine B under sunlight irradiation. In addition, the proposed excited electron transfer mechanism of organic dye Rhodamine B degradation has also been discussed. © 2016 Informa UK Limited, trading as Taylor & Francis Group.
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页码：33 / 39
页数：6
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共 29 条
  • [1] Ponseca C.S., Savenije T.J., Mohamed A., Organometal halide perovskite solar cell materials rationalized: Ultrafast charge generation, high and microsecond-long balanced mobilities, and slow recombination, J. Am. Chem. Soc, 136, 14, pp. 5189-5192, (2014)
  • [2] Lai W.P., Lin H.H., Lin Y.C., TiO<sub>2</sub> photocatalytic degradation and transformation of oxazaphosphorine drugs in an aqueous environment, J. Hazard. Mater., 287, pp. 133-141, (2015)
  • [3] Giolando D.M., Nano-crystals of titanium dioxide in aluminum oxide: A transparent self-cleaning coating applicable to solar energy, J. Sol. Energy, 97, 5, pp. 195-199, (2013)
  • [4] Fujishima A., Honda K., Electrochemical photolysis of water at a semiconductor electrode, J. Nature, 238, 5358, pp. 37-38, (1972)
  • [5] Fujishima A., Rao T.N., Tryk D.A., Titanium dioxide photocatalysis, J. Photoch. Photobio. C, 1, 1, pp. 1-21, (2000)
  • [6] Mor G.K., Shankar K., Paulose M., Use of highly-ordered TiO(2) nanotube arrays in dye-sensitized solar cells, J. Nano. lett., 6, 2, pp. 215-218, (2006)
  • [7] Hassan M.E., Cong L., Liu G., Synthesis and characterization of C-doped TiO<sub>2</sub> thin films for visible-light-induced photocatalytic degradation of methyl orange, J. Appl. Surf. Sci., 294, 1, pp. 89-94, (2014)
  • [8] Charanpahari A., Effect of Ce, N and S multi-doping on the photocatalytic activity of TiO<sub>2</sub> , J. Appl. Surf. Sci., 282, pp. 408-414, (2013)
  • [9] Asahi R., Morikawa T., Ohwaki T., Aoki K., Taga Y., Morikawa T., Visible-light photocatalyst -nitrogen-doped titanium dioxide, J. Sci., 293, pp. 269-271, (2001)
  • [10] Xing M., Zhang J., Feng C., New approaches to prepare nitrogen-doped TiO<sub>2</sub> photocatalysts and study on their photocatalytic activities in visible light, J. Appl. Catal. B Environ., 89, 3-4, pp. 563-569, (2009)
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