Thote Jayshri, Aiyappa Harshitha Barike, Deshpande Aparna, Díaz Díaz David, Kurungot Sreekumar, Banerjee Rahul
Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008 (India), Fax: (+91) 20-25902636.
Chemistry. 2014 Nov 24;20(48):15961-5. doi: 10.1002/chem.201403800. Epub 2014 Oct 13.
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 μmol h(-1) g(-1), which is significantly higher than that of bulk CdS particles (124 μmol h(-1) g(-1)). The presence of a π-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.
硫化镉纳米颗粒沉积在高度稳定的二维共价有机框架（COF）基质上，并对该杂化物进行光催化产氢测试。通过改变COF含量来研究CdS-COF杂化物的效率。仅引入1 wt%的COF时，就观察到杂化物的整体光催化活性急剧增加了十倍。在合成的各种杂化物中，含10 wt% COF的杂化物，命名为CdS-COF（90:10），被发现具有高达3678 μmol h⁻¹ g⁻¹的陡峭产氢量，这显著高于块状硫化镉颗粒（124 μmol h⁻¹ g⁻¹）。π共轭主链的存在、高表面积以及丰富的二维异质界面的出现突出了COF作为稳定所产生光电子的有效载体的用途，从而产生高效的光催化活性。
