Academician LI Can and colleagues at CAS Dalian Institute of Chemical Physics have loaded surface promoters Au or Au and CoOx on a BiVO4 surface which effectively promoted oxygen production performance of BiVO4. When coupled with a ZrO2/TaON surface through a potassium hexacyanoferrate mediator,  a highly efficient water decomposition system with an apparent quantum efficiency of more than 10% was achieved at visible light (420 nm) excitation).

CAS news release, September 3, 2018