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首页> 外文期刊>RSC Advances >A visible-light-induced photoelectrochemical water-splitting system featuring an organo-photocathode along with a tungsten oxide photoanode
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A visible-light-induced photoelectrochemical water-splitting system featuring an organo-photocathode along with a tungsten oxide photoanode

机译：可见光诱导的光电化学水分解系统，其特征在于有机光电阴极和氧化钨光电阳极

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A photoelectrochemical water-splitting system featuring an organo-photocathode of a p–n bilayer was studied, where WO3 was simultaneously utilized as a photoanode. Stoichiometric formation of H2 and O2 was found to occur due to the decomposition of water. In the reference system of a WO3 photoanode and Pt counter electrode, bias voltages more than 0.4 V were needed to be applied for water splitting; however, the present system successfully led to water decomposition by applying only a low voltage of 0.1 V to the system. In the present water-splitting system, oxidizing and reducing powers can be separately generated at the WO3 photoanode and organo-photocathode, respectively, which is distinct from the reference system. Furthermore, electron transfer from WO3 (conduction band) to the hole-retained p-type layer (valence band) in the organo-photocathode can efficiently occur for completing the photoelectrochemical process, thus, resulting in a high concentration of holes available for rate-limiting O2 evolution at WO3 on the basis of efficient charge separation.
机译：研究了具有p-n双层有机光电阴极的光电化学水分解系统，其中WO 3 同时用作光电阳极。 H 2 和O 2 的化学计量形成是由于水的分解而发生的。在WO 3 光电阳极和Pt对电极的参考系统中，需要使用大于0.4 V的偏置电压进行水分解;但是，本系统仅通过向系统施加0.1 V的低电压成功导致水分解。在本发明的水分解系统中，氧化和还原能力可以分别在WO 3 光电阳极和有机光电阴极分别产生，这与参考系统不同。此外，可以有效地发生从WO 3 （导带）到有机光电阴极中的空穴保留p型层（价带）的电子转移，从而完成光电化学反应。因此，在WO 3 处产生高浓度的空穴，可用于限制速率的O 2 进化在有效电荷分离的基础上。

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