物理化学学报 >> 2007, Vol. 23 >> Issue (12): 1899-1904.doi: 10.3866/PKU.WHXB20071213

研究论文 上一篇    下一篇

苝染料敏化Pt/TiO2光催化分解水制氢

刘福生; 吉仁; 吴敏; 孙岳明   

  1. 东南大学化学化工学院, 南京 210096; 南京林业大学化学与材料科学系, 南京 210037
  • 收稿日期:2007-06-25 修回日期:2007-09-19 发布日期:2007-11-30
  • 通讯作者: 孙岳明 E-mail:sun@seu.edu.cn

Hydrogen Production from Water Splitting Using Perylene Dye-Sensitized Pt/TiO2 Photocatalyst

LIU Fu-Sheng; JI Ren; WU Min; SUN Yue-Ming   

  1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, P. R. China; Department of Chemistry and Materials Science, Nanjing Forestry University, Nanjing 210037, P. R. China
  • Received:2007-06-25 Revised:2007-09-19 Published:2007-11-30
  • Contact: SUN Yue-Ming E-mail:sun@seu.edu.cn

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摘要： 用敏化剂N,N’-二(4-吡啶基)-3,4,9,10-苝四羧酸二酰亚胺(DPPBI)敏化Pt/TiO2, 得到光催化剂DPPBI/Pt/TiO2, 用红外光谱(IR)、紫外-可见漫反射光谱(UV-Vis DRS)、扫描电子显微镜(SEM)、X 射线光电子能谱(XPS)和X射线衍射(XRD)技术对产物进行了表征. 结果表明, DPPBI/Pt/TiO2中的TiO2为锐钛矿型, Pt高度分散于TiO2表面, DPPBI被吸附在Pt/TiO2表面. 用DPPBI/Pt/TiO2进行可见光催化分解水制氢的研究结果表明, 光催化剂的组成为0.1%DPPBI/0.4%Pt/TiO2, 催化剂用量为0.8 g·L-1, 反应液为250 mL, KI的浓度为0.2 mol·L-1, 300 W氙灯冷光源可见光照射8 h时, 产氢速率为6.69 滋mol·h-1·g-1.

关键词: 苝, 染料, 光催化剂, 制氢

Abstract: The photocatalyst (DPPBI/Pt/TiO2)was prepared using N,N’-di(4-pyridyl)-3,4,9,10-perylene tetracarboxylic acid bisimide (DPPBI) sensitized Pt/TiO2 and characterized by infrared spectroscopy(IR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), scanning electron microscopy(SEM), X-ray photoelectron spectroscopy(XPS), and X-ray diffraction (XRD). The results of characterizationshowedthat the crystal form of TiO2was anatase, Ptwas highly dispersed on the surface of TiO2 and DPPBI was adsorbed on the surface of Pt/TiO2 in DPPBI/Pt/TiO2. Hydrogen production from water splitting using photocatalyst (DPPBI/Pt/TiO2) was studied. It has been found that the rate of hydrogen evolution reaches 6.69 滋 mol·h-1·g-1 under visible light irradiation for 8 h with 300 W Xe-lamp cold light source when 250 mL reactive liquid contains 0.8 g·L-1 photocatalyst (0.1%DPPBI/0.4%Pt/TiO2) and 0.2 mol·L-1 KI.

Key words: Perylene, Dye, Photocatalyst, Hydrogen production