Institute of Physical Chemistry, Zhejiang Normal University , Jinhua, Zhejiang 321004, People's Republic of China.
ACS Appl Mater Interfaces. 2017 Jan 25;9(3):2899-2905. doi: 10.1021/acsami.6b15792. Epub 2017 Jan 12.
Development of MOF-based photocatalysts is intriguing research due to their structural flexibility and tremendous catalytic sites, whereas most MOFs only can take use of UV/visible light and lack of response to NIR light. Herein, we present a facile approach to integrate upconversion nanoparticles (UCNPs) with MOF to build a NIR-responsive composite photocatalyst. The MOF shell with controllable thickness can be grown on the UCNPs, thus exhibiting tunable photocatalytic activities under NIR irradiation. Furthermore, we extend visible absorption of the MOF shell by adding -NH groups so that the composite photocatalysts have a better utilization of UC emissions and sunlight to improve their activities. The developed composite photocatalysts have been characterized by XRD, TEM, PL, etc., and their photocatalytic performances were systematically explored. The formation and working mechanism of the composite photocatalysts were also elucidated.
基于金属-有机框架（MOF）的光催化剂的发展是一项引人关注的研究，因为它们具有结构灵活性和巨大的催化位点，而大多数 MOF 只能利用紫外/可见光，并且缺乏对近红外光的响应。在此，我们提出了一种简便的方法，将上转换纳米粒子（UCNPs）与 MOF 集成，构建一种对近红外光有响应的复合光催化剂。具有可控厚度的 MOF 壳可以在 UCNPs 上生长，从而在近红外辐射下表现出可调的光催化活性。此外，我们通过添加-NH 基团来扩展 MOF 壳的可见光吸收，从而使复合光催化剂更好地利用 UC 发射和太阳光来提高其活性。通过 XRD、TEM、PL 等对所开发的复合光催化剂进行了表征，并系统地研究了它们的光催化性能。还阐明了复合光催化剂的形成和工作机制。
