Fabrication of the heterostructured CsTaWO6/Au/g-C3N4 hybrid photocatalyst with enhanced performance of photocatalytic hydrogen production from water.

In this work, a novel CsTaWO 6 /Au/g-C 3 N 4 hybrid photocatalyst is successfully fabricated. The photocatalytic performance of the heterostructured CsTaWO 6 /Au/g-C 3 N 4 composite was investigated. Au nanoparticles were photo-deposited as the interlayer between g-C 3 N 4 and the surface of CsTaWO 6 , which can facilitate the photoinduced electrons migration as an electron-conduction bridge as well as increase visible-light absorption via the surface plasmon resonance. This heterostructured interface bridging by Au particles may significantly retard the recombination of electron–holes, which is beneficial to promote the photocatalytic activity under visible-light irradiation. It is found the CsTaWO 6 /Au/g-C 3 N 4 sample showed excellent photocatalytic activity of water splitting, even higher than the sum of g-C 3 N 4 and Au/CsTaWO 6 samples, or the sum of CsTaWO 6 and Au/g-C 3 N 4 samples. It indicates that the heterostructured combination of g-C 3 N 4 and CsTaWO 6 bridging by Au particles provided the synergistic photocatalytic activity driving by solar light through an efficient electron transfer process. [ABSTRACT FROM AUTHOR]