Carbon hollow matrix anchored by isolated transition metal atoms serving as a single atom cocatalyst to facilitate the water oxidation kinetics of bismuth vanadate

Carbon hollow matrix anchored by isolated transition metal atoms (M@NC, M = Fe, Co or Ni) was firstly utilized as an oxidation evolution reaction (OER) cocatalyst to promote the water oxidation kinetics of Mo, W co-doped BiVO4 (Mo, W: BVO) and enhance its photoelectrochemical (PEC) performance. Mo, W: BVO modified with Fe@NC exhibited higher PEC ability than the one loaded with other M@NC due to its relatively low redox potential.