Our results demonstrate that the construction of S-scheme heterojunction is a preferable strategy that can be applied to design the photoanode for highly efficient PEC water splitting.After a month of work,i finally finished my King's Field fansite!I know that the design is simple,but trust me it's a great source for all King's Field series,Shadow Tower series,Eternal Ring,Demon's Souls and all similar games to KF.It includes reviews,pictures,videos,links and more for them all.And the best part you can find great download files about KF series like all KF musics,rips,midis,etc. Besides, the same direction between the internal electric field and applied bias can reduce the applied bias voltage. According to the experimental and theoretical calculation results, the internal electric field formed on heterojunction interface can induce a step-scheme charge transfer mechanism, which not only promotes the separation of photogenerated charge but also maintains the strong redox ability of photogenerated charge. The onset potential reduces from 0.97 to 0.82 VRHE. The photocurrent density reaches 3.22 mA/cm2 (1.23 VRHE) without cocatalyst, higher than the photocurrent density yet reported for most BiVO4-based photoanodes. The proposed S-scheme BiVO4/WO3 photoanode (S-BiVO4/WO3) is inverse to the typical type-Ⅱ WO3/BiVO4 heterojunction photoanode (Ⅱ-WO3/BiVO4), and shows a significantly better PEC performance. Herein, it is first proposed that an S-scheme heterojunction is used as photoanode in the PEC field. However, type-II heterojunctions are disadvantaged by such drawbacks as the reduced redox ability and occurrence of repulsion against photogenerated charge transfer. Type-Ⅱ heterojunction film is widely applied as photoanode for the purpose of photoelectrochemical (PEC) water splitting.
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