Abstract It is highly profitable to transform glycerol – the main by-product from biodiesel production to high value-added chemicals. In this work, we develop a photoelectrochemical system based on nanoporous BiVO 4 for selective oxidation of glycerol to 1,3-dihydroxyacetone – one of the most valuable derivatives of glycerol. Under AM 1.5G front illumination (100 mW cm −2 ) in an acidic medium (pH = 2) without adscititious oxidant, the nanoporous BiVO 4 photoanode achieves a glycerol oxidation photocurrent density of 3.7 mA cm −2 at a potential of 1.2 V versus RHE with 51% 1,3-dihydroxyacetone selectivity, equivalent to a production rate of 200 mmol of 1,3-dihydroxyacetone per m 2 of illumination area in one hour.

Selective photoelectrochemical oxidation of glycerol to high value-added dihydroxyacetone

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