Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, P. R. China.
Nanoscale. 2018 Nov 7;10(41):19509-19516. doi: 10.1039/c8nr06691d. Epub 2018 Oct 15.
CdS nanoparticle-decorated covalent triazine-based frameworks (CdS NPs/CTF-1) were controllably synthesized via a facile one-pot solvothermal method. Due to the Lewis basic nature of well-defined nitrogen sites in triazine units of CTF-1, highly dispersed and size-controlled CdS NPs were obtained and stabilized on the surface of CTF-1 layers. The as-prepared CdS NPs/CTF-1 assembly showed higher photocatalytic activity in a hydrogen evolution reaction under visible light irradiation as compared with pure CdS and CTF-1 and their physical mixture. The superior photocatalytic performance observed over CdS NPs/CTF-1 was ascribed to the highly dispersed CdS NPs with strong interaction to CTF-1 layers. The strong NP-on-layer interactions between CdS and CTF-1 in the CdS NPs/CTF-1 assembly can not only facilitate the photogenerated charge separation rates, but can also shape CdS with a nanosized structure and high stability. This study develops a new strategy to improve the photocatalytic performance and conquer the photocorrosion of CdS, and also provides some guidance for us in the development of other CTF-incorporated nanocomposite photocatalysts.
CdS 纳米粒子修饰的共价三嗪基框架（CdS NPs/CTF-1）通过简便的一锅溶剂热法可控合成。由于 CTF-1 中环三嗪单元中明确的氮位的路易斯碱性，高度分散且尺寸可控的 CdS NPs 获得并稳定在 CTF-1 层的表面上。与纯 CdS 和 CTF-1 及其物理混合物相比，所制备的 CdS NPs/CTF-1 组装体在可见光照射下的析氢反应中表现出更高的光催化活性。在 CdS NPs/CTF-1 上观察到的优越光催化性能归因于与 CTF-1 层具有强相互作用的高度分散的 CdS NPs。CdS NPs/CTF-1 组装体中 CdS 和 CTF-1 之间的 NP-on-layer 相互作用不仅可以促进光生电荷分离速率，还可以将 CdS 塑造成纳米结构和高稳定性。本研究开发了一种提高光催化性能和克服 CdS 光腐蚀的新策略，也为我们开发其他含 CTF 的纳米复合材料光催化剂提供了一些指导。
