利用静电吸引作用提高光催化放氢效率

doi:10.7517/j.issn.1674-0475.2011.04.270

影像科学与光化学 ›› 2011, Vol. 29 ›› Issue (4): 270-277.DOI: 10.7517/j.issn.1674-0475.2011.04.270

利用静电吸引作用提高光催化放氢效率

何礼青^1,2, 骆超^1,2, 周前雄¹, 侯原军¹, 张宝文¹, 王雪松¹

1. 中国科学院理化技术研究所, 北京100190;
2. 中国科学院研究生院, 北京100049

收稿日期:2011-04-08 修回日期:2011-04-20 出版日期:2011-07-23 发布日期:2011-07-23
通讯作者: 王雪松
基金资助:
中国科学院太阳能行动计划(KGCX2-YW-389)

Use Electrostatic Attraction to Improve the Photocatalytic Hydrogen Evolution Efficiency

HE Li-qing^1,2, LUO Chao^1,2, ZHOU Qian-xiong¹, HOU Yuan-jun¹, ZHANG Bao-wen¹, WANG Xue-song¹

1. Technical Institute of Physics and Chemistry, CAS, Beijing 100190, P.R.China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P.R.China

Received:2011-04-08 Revised:2011-04-20 Online:2011-07-23 Published:2011-07-23

摘要/Abstract

摘要： 本文设计合成了两个分别带正电荷和负电荷的Ir(Ⅲ)配合物[Ir(ppy)₂(bpy)]⁺(ppy=2-苯基吡啶,bpy=2,2′-联吡啶)和[Ir(ppy)₂(pbs)]^-(pbs=1,10-菲啰啉-4,7-二苯磺酸钠)作为光敏剂,以[Co(bpy)₃]²⁺为放氢催化剂,比较了Ir(Ⅲ)配合物的光催化放氢效率.发现带负电荷的Ir(Ⅲ)配合物具有更高的光催化放氢效率,带负电荷光敏剂和带正电荷催化剂间的静电吸引可能对放氢效率的提高起到了重要作用.

关键词: 光催化放氢, 静电吸引, 光敏剂, 放氢催化剂

Abstract: Two Ir(Ⅲ) complexes [Ir(ppy)₂(bpy)]⁺(ppy=2-phenylpyridine,bpy=2,2′-dipyridyl) and [Ir(ppy)₂(pbs)]^-(pbs=1,10-phenanthroline-4,7-diphenylsulfonic acid disodium salt) bearing one positive and one negative charge,respectively,were designed and synthesized to serve as photosensitizers.Using [Co(bpy)₃]²⁺ as hydrogen-evolving catalyst,the photocatalytic hydrogen evolution efficiencies of the two Ir(Ⅲ) complexes were compared.The Ir(Ⅲ) complex bearing one negative charge exhibits much higher photocatalytic hydrogen evolution activity than the Ir(Ⅲ) complex bearing one positive charge.It was confirmed that the electrostatic attraction between the negatively charged photosensitizer and positively charged catalyst plays an important role.

Key words: photocatalytic hydrogen evolution, electrostatic attraction, photosensitizer, hydrogen-evolving catalyst

中图分类号:

何礼青, 骆超, 周前雄, 侯原军, 张宝文, 王雪松. 利用静电吸引作用提高光催化放氢效率[J]. 影像科学与光化学, 2011, 29(4): 270-277.

HE Li-qing, LUO Chao, ZHOU Qian-xiong, HOU Yuan-jun, ZHANG Bao-wen, WANG Xue-song. Use Electrostatic Attraction to Improve the Photocatalytic Hydrogen Evolution Efficiency[J]. Imaging Science and Photochemistry, 2011, 29(4): 270-277.

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利用静电吸引作用提高光催化放氢效率

Use Electrostatic Attraction to Improve the Photocatalytic Hydrogen Evolution Efficiency

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