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Acta Phys. -Chim. Sin.  2014, Vol. 30 Issue (9): 1706-1712    DOI: 10.3866/PKU.WHXB201406272
CATALYSIS AND SURFACE SCIENCE     
Preparation of Fe-Doped Graphitic Carbon Nitride with Enhanced Visible-Light Photocatalytic Activity
JIN Rui-Rui, YOU Ji-Guang, ZHANG Qian, LIU Dan, HU Shao-Zheng, GUI Jian-Zhou
Division of Chemistry, Chemical Engineering and Environment, Liaoning Shihua University, Fushun 113001, Liaoning Province, P. R. China
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Abstract  

A series of Fe-doped graphitic carbon nitride (g-C3N4) photocatalysts were prepared using ferric nitrate and melamine as precursors. X-ray diffraction (XRD), ultraviolet-visible (UV-Vis) spectroscopy, Fouriertransform infrared (FT-IR) spectroscopy, inductively coupled plasma-atomic emission spectroscopy (ICP-AES), photoluminescence (PL) spectrum, and X-ray photoelectron spectroscopy (XPS) were used to identify changes in the characteristics caused by coordination of N atoms in the structural units of g-C3N4. The results indicate that embedded Fe3+ changed the optical properties, affected the energy band structure, and increased the electron/hole separation rate. The activities of the Fe3+-doped g-C3N4 catalysts were tested in the photocatalytic degradation of rhodamine B (RhB) under visible light. The degradation rate of RhB over Fe3+-doped g-C3N4 was 99.7% in 120 min. The rate constant for Fe3+-doped g-C3N4 was 3.2 times as high as that of pure g-C3N4. Disodium ethylenediamine tetraacetate, tert-butyl alcohol, and 1,4-benzoquinone were used as hole (hVB+), hydroxyl radical (·OH), and superoxide radical (O2) scavengers, respectively, to investigate the possible mechanism.



Key wordsGraphitic carbon nitride      Photocatalysis      Visible light      RhB degrdatiaon      Fe doping     
Received: 08 May 2014      Published: 27 June 2014
MSC2000:  O641  
  O649  
Fund:  

The project was supported by the Program for New Century Excellent Talents in University, China (NCET-11-1011), National Natural Science Foundation of China (21103077), and Natural Science Foundation of Liaoning Province, China (201202123).

Corresponding Authors: HU Shao-Zheng, GUI Jian-Zhou     E-mail: hushaozheng001@163.com;jzgui@hotmail.com
Cite this article:

JIN Rui-Rui, YOU Ji-Guang, ZHANG Qian, LIU Dan, HU Shao-Zheng, GUI Jian-Zhou. Preparation of Fe-Doped Graphitic Carbon Nitride with Enhanced Visible-Light Photocatalytic Activity. Acta Phys. -Chim. Sin., 2014, 30(9): 1706-1712.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB201406272     OR     http://www.whxb.pku.edu.cn/Y2014/V30/I9/1706

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