A Conformal Carbon Nanolayer Coated Fe O Cocatalyst for the Promoted Activity of Plasma-Sputtered BiVO Photoanode.

To simultaneously improve the hole extraction ability of the BiVO photoanode and accelerate the surface reaction kinetics, herein, a carbon nanolayer conformally coated Fe O (C-Fe O ) as oxygen evolution catalyst (OEC) is loaded on the H plasma treated nanoporous BiVO (BVO(H )) surface by a hydrothermal reaction. It is found that the H plasma induced vacancies in BVO remarkably increases the conductivity, and the C-Fe O enables hole extraction from the bulk to the surface as well as efficient hole injection to the electrolyte. As a result, the C-Fe O /BVO(H ) photoanode achieves a photocurrent density of 4.

Enhanced Surface Kinetics and Charge Transfer of BiVO Photoanodes by Rh O Cocatalyst Loading for Improved Solar Water Oxidation.

A Rh O /BiVO composite photoanode exhibits enhanced surface reaction kinetics and charge transfer efficiency, enabling a photocurrent density of ca. 3.5 mA/cm at 1.