Abstract An organic p-n bilayer photocatalyst, comprising a perylene derivative (PTCBI, n-type) and cobalt phthalocyanine (CoPc, n-type), is utilized for the oxidative formation of molecular hydrogen (H2) from a borane-ammonia complex (NH3BH3, AB). The formation of H2 occurs photocatalytically at the surface of CoPc in the organo-bilayer, along with the reduction of O2 by a reducing power generated at PTCBI. The mechanism to illustrate the H2-formation from AB by the organo-photocatalyst may be different from that of the conventional photocatalysis by inorganic semiconductors. To further understand the mechanism of H2-formation, photoelectrochemistry is further investigated using the PTCBI/CoPc bilayer as a photoanode. Considering the resulting faradaic efficiency for H2-formation, at least two possible equations have to be suggested: BH3OH− (intermediate) + 3OH− → BO2− + 3/2H2 + 2H2O + 3e− and BH3OH− (intermediate) + 2OH− → BO2− + 2H2 + H2O + 2e−.

中文翻译：

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使用包含 p 型钴酞菁和 n 型苝衍生物的有机 pn 双层从硼烷-氨络合物氧化形成 H 2 的光电化学和光催化研究

摘要 一种有机 pn 双层光催化剂，包含苝衍生物（PTCBI，n 型）和钴酞菁（CoPc，n 型），用于从硼烷 - 氨络合物（NH3BH3， AB）。H2 的形成发生在有机双层中 CoPc 表面的光催化作用，同时通过 PTCBI 产生的还原能力还原 O2。说明有机光催化剂从 AB 形成 H2 的机制可能与无机半导体的常规光催化不同。为了进一步了解 H2 形成的机制，使用 PTCBI/CoPc 双层作为光阳极进一步研究了光电化学。考虑到 H2 形成的法拉第效率，至少需要提出两个可能的方程：