Supramolecular Assembly of Graphene-Polyamine-PdS-CdS Photocatalysts for Synergistically Enhanced and Highly Effective Hydrogen Evolution from Water under Visible Light.

ABSTRACT: New composite materials for water reduction based on the CdS photocatalyst were prepared by sequential deposition of semiconductor PdS and CdS on a platform obtained from graphene nanoplatelets (GNPs) noncovalently functionalized by the adsorption of the [9]aneN₃ pyrimidine derivatives HL1 and H₂L2. The GNP-HL1-PdS-CdS composite (≈ 4.5, 0.5, 95 wt % composition) showed excellent photocatalytic activity in water reduction with an almost constant average H₂ production of 4.05 mmol·g^-1·h^-1 during 28 h, overcoming the best-performing analogous composites reported so far. The systematic study of the structural and optical properties of both the composites and the precursors reveals that besides PdS and CdS, GNP-HL1 behaves as a 2D semicondu

SUBMITTER: Godino-Salido ML 

PROVIDER: S-EPMC12541699 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature