Synergistic effects of the Rh-S bond and spatially separated dual cocatalysts on photocatalytic overall water splitting activity of ZnIn 2 S 4 nanosheets under visible light irradiation.

Photodeposition of dual-cocatalysts Pt-Cr or Rh-Cr on the surface of ZnIn ₂ S ₄ is used to achieve overall water splitting. Compared with the hybrid loading of the Pt element and Cr element, the formation of the Rh-S bond results in space separation of the Rh element and Cr element. The Rh-S bond and space separation of cocatalysts promote the transfer of bulk carriers to the surface and inhibit self-corrosion.