期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 20, 期 48, 页码 15961-15965出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201403800
关键词
charge transfer; covalent organic frameworks; hybrid materials; hydrogen production; photocatalysis
资金
- CSIR, New Delhi, India
- UGC, New Delhi, India
- CSIR's Five Year Plan [CSC0102]
- DST [SB/S1/IC-32/2013]
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.
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