Stable Hematite Nanosheet Photoanodes for Enhanced Photoelectrochemical Water Splitting

Piangjai Peerakiatkhajohn, Jung-Ho Yun, Hongjun Chen, Miaoqiang Lyu, Teera Butburee, Lianzhou Wang

Abstract: A vertically grown hematite nanosheet film modified with Ag nanoparticles (NPs) and Co-Pi cocatalyst exhibits a remarkably high photocurrent density of 4.68 mA cm−2 at 1.23 V versus RHE. The Ag NPs leads to significantly improved light harvesting and better charge transfer, while the Co-Pi facilitates highly stable oxygen evolution process. This photoelectrode design provides more efficient photoelectrochemical systems for solar energy conversion.

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