Wide visible light-induced dioxygen evolution at an organic photoanode coated with a noble metal oxide catalyst
Wide visible light-induced dioxygen evolution at an organic photoanode coated with a noble metal oxide catalyst
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DOI：
10.1016/j.jelechem.2005.11.001
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发表时间：
2006-02-01
影响因子：
4.5
通讯作者：
Norimatsu, T
中科院分区：
文献类型：
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作者：
Abe, T;Nagai, K;Norimatsu, T
由3，4，9，10-芘四羧基-双苯并咪唑（PTCBI，n型半导体）和29 H，31 H-酞菁（H2 PC，p型半导体）组成的有机双层膜作为光阳极能够在水相中放出O-2，特别是当H2 PC的外表面涂覆有IrO 2催化剂时。典型的光电极的特征在于以下事实：仅通过PTCBI的宽且有效的< 750 nm的可见光吸收诱导涉及IrO 2/水界面处的水氧化的光电流的产生，这是基于双层的电物理特性。在PTCBI块体中形成的激子可以通过其在p/n界面处的电荷分离而有助于载流子的产生，其中O-2演化发生在与空穴传导H2 PC层耦合的IrO 2/水界面处。(c)2005 Elsevier B. V.保留所有权利。
An organic bilayer composed of 3,4,9,10-peryienetetracarboxyl-bisbenzimidazole (PTCBI, n-type semiconductor) and 29H, 31H-phthalocyanine (H2PC, p-type semiconductor) works as a photoanode capable of O-2 evolution in the water phase especially when the outer surface of H2PC is coated with an IrO2, catalyst. A typical photoelectrode is characterized by the fact that a wide and efficient visible light absorption of < 750 nm by only the PTCBI induces the generation of the photocurrent involving water oxidation at the IrO2/water interface, which is based on the photophysical character of the bilayer. The exciton formed in PTCBI bulk can contribute to carrier generation through its charge separation at the p/n interface, with which the O-2 evolution takes place at the IrO2/water interface coupled with the hole-conducting H2PC layer. (c) 2005 Elsevier B.V. All rights reserved.