A Covalent Organic Framework-Cadmium Sulfide Hybrid as a Prototype Photocatalyst for Visible-Light-Driven Hydrogen Production
A Covalent Organic Framework-Cadmium Sulfide Hybrid as a Prototype Photocatalyst for Visible-Light-Driven Hydrogen Production
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DOI：
10.1002/chem.201403800
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发表时间：
2014-11-24
影响因子：
4.3
通讯作者：
Banerjee, Rahul
中科院分区：
文献类型：
--
作者：
Thote, Jayshri;Aiyappa, Harshitha Barike;Banerjee, Rahul
将硫化镉纳米颗粒沉积在高度稳定的二维共价有机骨架(COF)基质上，并对其光催化制氢性能进行了测试。通过改变COF的含量，考察了CDS-COF杂化的效率。在仅引入1wt%的COF的情况下，观察到杂化材料的总体光催化活性显著增加了10倍。在所合成的各种杂化材料中，含有10wt%COF的CDS-COF(90：10)具有较高的氢产率，达3678mmolh(-1)g(-1)，明显高于块体CdS颗粒(124mmolh(-1)g(-1))的产氢量。P-共轭主链的存在，高比表面积，以及丰富的2D异质界面的存在，突出了COF作为稳定产生的光电子的有效载体的用途，从而导致了高效和高的光催化活性。
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.