Giant Enhancement of Internal Electric Field Boosting Bulk Charge Separation for Photocatalysis.

Li, Jie; Cai, Lejuan; Shang, Jian; Yu, Ying; Zhang, Lizhi · Adv Mater · 2016

basic_science · Level V

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Abstract

Incorporating carbon into Bi3 O4 Cl enhances its internal electric field by 126 times, which induces a bulk charge separation efficiency (ηbulk ) of 80%. This ultrahigh ηbulk value presents a state-of-the-art result in tuning the bulk charge separation. The generated C-doped Bi3 O4 Cl has a noble-metal- and electron-scavenger-free water-oxidation ability under visible light, which is difficult to achieve with most existing photocatalysts.