Rationally Designed Copper‐Modified Polymeric Carbon Nitride as a Photocathode for Solar Water Splitting,ChemSusChem

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Rationally Designed Copper‐Modified Polymeric Carbon Nitride as a Photocathode for Solar Water Splitting
ChemSusChem ( IF 7.5 ) Pub Date : 2019-02-05 , DOI: 10.1002/cssc.201802495
Zhonghao Wang ₁ , Bingjun Jin ₂ , Guojun Zou ₁ , Kan Zhang ₂ , Xun Hu ₁ , Jong Hyeok Park ₂

Affiliation

Polymeric carbon nitride has been considered to be an active photocathode for catalyzing the generation of H₂ through water splitting. However, the application of this material in photoelectrochemical cells remains a challenge owing to the intrinsically sluggish kinetics of charge separation. Herein, a facile salt‐melt method is developed for fabricating Cu‐modified polymeric carbon nitride as an effective photocathode material for solar water splitting. Various characterization data confirm that Cu‐modified polymeric carbon nitride contains both free CuCl, derived from precursors, and coordinated Cu species incorporated into the polymeric carbon nitride, which can generate type‐II heterojunctions. This special heterojunction energy structure contributes to a significantly enhanced photocurrent density for hydrogen evolution. The proposed strategy for synthesizing the Cu‐modified polymeric carbon nitride can stimulate research for the development of highly efficient visible‐light‐active photocathodes.

中文翻译：

合理设计的铜改性高分子氮化碳作为用于太阳能水分解的光电阴极

聚合氮化碳被认为是用于催化H ₂生成的活性光电阴极。通过水分解。然而，由于电荷分离的固有动力学迟缓，该材料在光电化学电池中的应用仍然是一个挑战。在此，开发了一种简便的盐熔法，以制造铜改性的聚合氮化碳，将其作为一种有效的用于太阳能水分解的光阴极材料。各种表征数据证实，Cu改性的聚合碳氮化物既包含衍生自前体的游离CuCl，又包含并入聚合碳氮化物中的配位Cu物种，这些物种可生成II型异质结。这种特殊的异质结能量结构有助于显着提高光析出氢的光电流密度。

更新日期：2019-02-05

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