高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 343.

• Chemistry in Materials Sciences • 上一篇    下一篇

The Effect of Preparation Condition on the Photoelectrochemistry of PANI/PATP/Au Film and TiO2/PANI/PATP/Au Composite Film

HUANG Huai-Guo, LUO Jin, ZHENG Zhi-Xin, WU Ling-Ling, LIN Zhong-Hua   

  1. Department of Chemistry, State key lab for physical chemistry of solid surfaces, Xiamen University, Xiamen 361005
  • 出版日期:2000-12-31 发布日期:2000-12-31
  • 通讯作者: LIN Zhong-Hua E-mail:zhlin@xmu.edu.cn
  • 基金资助:

    The support of this work by the National Nature Science Foundation of China(29833060, 20023001) and Ministry of Education(99177) are gratefully acknowledge.

The Effect of Preparation Condition on the Photoelectrochemistry of PANI/PATP/Au Film and TiO2/PANI/PATP/Au Composite Film

HUANG Huai-Guo, LUO Jin, ZHENG Zhi-Xin, WU Ling-Ling, LIN Zhong-Hua   

  1. Department of Chemistry, State key lab for physical chemistry of solid surfaces, Xiamen University, Xiamen 361005
  • Online:2000-12-31 Published:2000-12-31
  • Contact: LIN Zhong-Hua E-mail:zhlin@xmu.edu.cn
  • Supported by:

    The support of this work by the National Nature Science Foundation of China(29833060, 20023001) and Ministry of Education(99177) are gratefully acknowledge.

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摘要：

The polyaniline(PANI) film and TiO2/PANI composite film were obtained on different preparation conditions by electrochemical methods[1] and the photoelectrochemistxy of them were also studied. The self-assembling of p-aminothiophenol(PATP) favor the adhesion of PANI, and the longer time PATP self-assembled, the better adhesion of PANI has. After self-assembling PATP for 12 h, the adhesion of PANI drives to stabilization. There is an optimal thickness of PANI film for the photoelectrochemical response[2]. Fig. 1 show that the PAM of polymerizing 100 cycles in 0.5 mol/L aniline/HClO4 is optimal in our studies. The anodic and cathodic photocurrent bands of the pernigraniline (appeared within 1.45~2.8 eV), the emeraldine salt and the leucoemeraldine (both appeared within 1.7~2.8 eV) are observed in Fig. 2. The onset energy of the emeraldine salt is smaller than the value of 3~4 eV given by references, and obviously the subband gap photocurrent are obtained. And since the leucoemeraldine prepared by electropolymerization contains some emeraldine salt, the spectra of photocurrent for the leucoemeraldine is similar to that of the emeraldine salt except for much smaller IPCE. The onset energy of the pemigraniline (about 1.45 eV) is considerably consistent with theoretical calculation[3]. Though high temperature is in favor of the photoelectrochemistry of TiO2. But there is an optimum temperature because when the temperature is so high that the surface texture of PANI film will be damaged. We evaluated the power characteristics of a simple photoeletrochemical cell by employing different TiO2/PANI films as photoanode and a Pt wire as a counter electrode in 0.05mol/L Fe(CN)63-/Fe(CN)64- solution. The results show that the energy conversion efficiencies for the TiO2/PANI film dried under the temperature of room temperature, 100℃, 150℃, 200℃ with a white radiation of Xe lamp(150 W). are 2.4%, 3.3%, 3.9%, 2.8% respectively. In this paper, the temperature of 150℃ is the optimal temperature for heating TiO2/PANI composite film.

Abstract:

The polyaniline(PANI) film and TiO2/PANI composite film were obtained on different preparation conditions by electrochemical methods[1] and the photoelectrochemistxy of them were also studied. The self-assembling of p-aminothiophenol(PATP) favor the adhesion of PANI, and the longer time PATP self-assembled, the better adhesion of PANI has. After self-assembling PATP for 12 h, the adhesion of PANI drives to stabilization. There is an optimal thickness of PANI film for the photoelectrochemical response[2]. Fig. 1 show that the PAM of polymerizing 100 cycles in 0.5 mol/L aniline/HClO4 is optimal in our studies. The anodic and cathodic photocurrent bands of the pernigraniline (appeared within 1.45~2.8 eV), the emeraldine salt and the leucoemeraldine (both appeared within 1.7~2.8 eV) are observed in Fig. 2. The onset energy of the emeraldine salt is smaller than the value of 3~4 eV given by references, and obviously the subband gap photocurrent are obtained. And since the leucoemeraldine prepared by electropolymerization contains some emeraldine salt, the spectra of photocurrent for the leucoemeraldine is similar to that of the emeraldine salt except for much smaller IPCE. The onset energy of the pemigraniline (about 1.45 eV) is considerably consistent with theoretical calculation[3]. Though high temperature is in favor of the photoelectrochemistry of TiO2. But there is an optimum temperature because when the temperature is so high that the surface texture of PANI film will be damaged. We evaluated the power characteristics of a simple photoeletrochemical cell by employing different TiO2/PANI films as photoanode and a Pt wire as a counter electrode in 0.05mol/L Fe(CN)63-/Fe(CN)64- solution. The results show that the energy conversion efficiencies for the TiO2/PANI film dried under the temperature of room temperature, 100℃, 150℃, 200℃ with a white radiation of Xe lamp(150 W). are 2.4%, 3.3%, 3.9%, 2.8% respectively. In this paper, the temperature of 150℃ is the optimal temperature for heating TiO2/PANI composite film.

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