Bismuth vanadate

It is widely studied as visible light photo-catalyst with a narrow band gap of less than 2.4 eV.

In nature, bismuth vanadate can be found as the mineral pucherite, clinobisvanite, and dreyerite depending on the particular polymorph formed.

[4] In the monoclinic phase, BiVO4 is an n-type photoactive semiconductor with a bandgap of 2.4 eV, which has been investigated for water splitting after doping with W and Mo.

[3] BiVO4 photoanodes have demonstrated record solar-to-hydrogen (STH) conversion efficiencies of 5.2% for flat films[5][6] and 8.2% for WO3@BiVO4 core-shell nanorods[7][8][9] (highest for metal-oxide photo-electrode) with the advantage of a very simple and cheap material.

It is also possible to start with the parent oxides (Bi2O3 and V2O5) and perform a high temperature calcination to achieve a pure product.

A fine yellow powder
NFPA 704 four-colored diamond Health 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroform Flammability 0: Will not burn. E.g. water Instability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calcium Special hazards (white): no code