A Covalent Organic Framework-Cadmium Sulfide Hybrid as a Prototype Photocatalyst for Visible-Light-Driven Hydrogen Production

作者：Thote Jayshri; Aiyappa Harshitha Barike; Deshpande Aparna; Diaz Diaz David; Kurungot Sreekumar^*; Banerjee Rahul

来源：Chemistry - A European Journal, 2014, 20(48): 15961-15965.

DOI：10.1002/chem.201403800

• charge transfer
• covalent organic frameworks
• hybrid materials
• hydrogen production
• photocatalysis

CdS nanoparticles were deposited on a highly stable, two-dimensional (2D) covalent organic framework (COF) matrix and the hybrid was tested for photocatalytic hydrogen production. The efficiency of CdS-COF hybrid was investigated by varying the COF content. On the introduction of just 1 wt% of COF, a dramatic tenfold increase in the overall photocatalytic activity of the hybrid was observed. Among the various hybrids synthesized, that with 10 wt% COF, named CdS-COF (90: 10), was found to exhibit a steep H2 production amounting to 3678 mmolh(-1) g(-1), which is significantly higher than that of bulk CdS particles (124 mmolh(-1)g(-1)). The presence of a p-conjugated backbone, high surface area, and occurrence of abundant 2D hetero-interface highlight the usage of COF as an effective support for stabilizing the generated photoelectrons, thereby resulting in an efficient and high photocatalytic activity.

• 出版日期2014-11-24