Abstract
A two‐dimensional BiOI/MoS2 heterojunction is fabricated by in situ growth of MoS2 on BiOI nanosheets through a hydrothermal method and then as a carrier for loading on Pt nanoparticles. Transmission electron microscopy shows that Pt nanoparticles are decorated uniformly on the surface of BiOI/MoS2 nanosheets. The obtained Pt‐BiOI/MoS2 is utilized as an electrocatalyst for the methanol oxidation reaction in alkaline conditions under visible light irradiation. Electrochemical evaluations indicate that as‐prepared Pt‐BiOI/MoS2 expresses the highest methanol oxidation reaction activity and stability, and the maximum current density reaches 1007.2 mA mg−1Pt under visible light irradiation, which is 12 and 3.5 times higher compared with Pt‐BiOI and commercial Pt/C electrodes, respectively, in the traditional electrocatalytic process. The results suggest that a synergy of photo‐ and electro‐processes improves the photoelectrocatalytic performance of Pt‐BiOI/MoS2 in the methanol oxidation reaction.
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