The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University , Shanghai 200234, China.
ACS Appl Mater Interfaces. 2015 Sep 16;7(36):20076-82. doi: 10.1021/acsami.5b05184. Epub 2015 Sep 3.
Ag/BiOBr film coated on the glass substrate was synthesized by a solvothermal method and a subsequent photoreduction process. Such a Ag/BiOBr film was then adhered to a hollow rotating disk filled with long-afterglow phosphor inside the chamber. The Ag/BiOBr film exhibited high photocatalytic activity for organic pollutant degradation owing to the improved visible-light harvesting and the separation of photoinduced charges. The long-afterglow phosphor could absorb the excessive daylight and emit light around 488 nm, activating the Ag/BiOBr film to realize round-the-clock photocatalysis. Because the Ag nanoparticles could extend the light absorbance of the Ag/BiOBr film to wavelengths of around 500 nm via a surface plasma resonance effect, they played a key role in realizing photocatalysis induced by long-afterglow phosphor.
Ag/BiOBr 薄膜通过溶剂热法和后续的光还原过程被涂覆在玻璃基底上。然后，将这种 Ag/BiOBr 薄膜附着在一个空心旋转盘上，该旋转盘内部充满了长余辉磷光体。由于提高了可见光的捕获和光生载流子的分离，Ag/BiOBr 薄膜表现出了很高的光催化活性，可用于降解有机污染物。长余辉磷光体可以吸收多余的日光并发出波长约为 488nm 的光，从而激活 Ag/BiOBr 薄膜，实现全天候光催化。由于 Ag 纳米粒子可以通过表面等离子体共振效应将 Ag/BiOBr 薄膜的光吸收率扩展到约 500nm 的波长，因此它们在实现长余辉磷光体诱导的光催化方面起着关键作用。
