A cobalt silicate modified BiVO4 photoanode for efficient solar water oxidation

A highly enhanced photoelectrochemical performance of BiVO4 photoanodes modified with CoPi groups by increasing energy band bending, accelerating hole separation and improving water oxidation kinetics

“…The applied bias photon-to-current efficiency (ABPE) was studied and calculated by using eqn (2): 34 where J is the photocurrent density (mA cm −2 ), V RHE is the applied bias, and P in is the intensity of input light power, which is 100 mW cm −2 .…”

Emerging Surface, Bulk, and Interface Engineering Strategies on BiVO4 for Photoelectrochemical Water Splitting

“…Reproduced with permission. [85] Copyright 2020, Elsevier. i) Schematic illustration of charge transfer mechanism in thin (≈4 nm) (top) and thick (bottom) MnO x layer on BiVO4 photoanodes.…”

“…Recently, Qi and co-workers introduced cobalt silicate (Co-Sil) as cocatalyst on a nanoporous BiVO 4 photoanodes, which was prepared by photoelectrophoretic deposition (PEPD) that combined PEC oxidation and electrophoretic deposition. [85] Authors proposed that the light irradiation during the PEPD process decreased the resistance of BiVO 4 that led to the accumulation of photogenerated holes on the BiVO 4 surface. This further promoted the PEPD process.…”

Conjugated π Electrons of MOFs Drive Charge Separation at Heterostructures Interface for Enhanced Photoelectrochemical Water Oxidation

“…[1][2][3][4][5][6] To utilize solar energy efficiently, semiconductor catalysts are highly desired in photoelectrodes. At present, single-catalyst systems, such as TiO 2 , [7][8][9][10] Fe 2 O 3 , [11][12][13] BiVO 4 , [14][15][16] and metallic sulfides, [17][18][19][20] have been studied widely as photoanodes. However, the photogenerated electronhole recombination seriously inhibits the single semiconductor catalyst to satisfy the requirements of efficient solar-energydriven water splitting.…”