Song Xu Chung, Qi Yi Ling, Zheng Yi Fan, Liu Jia Ning, Yin Hao Yong
J Nanosci Nanotechnol. 2017 Feb;17(2):1407-412. doi: 10.1166/jnn.2017.12723.
A new magnetic Fe₃O₄@C@Ag₃PO₄ nanocomposites photocatalyst with visible light response has been prepared by solvothermal, hydrothermal and precipitation process. The photocatalyst exhibited high photocatalytic activity and stability for the degradation of rhodamine B (RhB). Almost 100% of RhB was photodegraded with the assistance of magnetic Fe₃O₄@C@Ag₃PO₄ nanocomposites after 40 min, and the photocatalyst showed no obvious loss of photocatalytic activity after four times of cyclic utilization. Furthermore, the magnetic Fe₃O₄@C@Ag₃PO₄ nanocomposites can be separated by external magnetic field. Further study proved that the photogenerated holes were the main active species in the degradation process.
通过溶剂热、水热和沉淀法制备了一种新型的具有可见光响应的磁性Fe₃O₄@C@Ag₃PO₄纳米复合光催化剂。该光催化剂对罗丹明B（RhB）的降解表现出高光催化活性和稳定性。在磁性Fe₃O₄@C@Ag₃PO₄纳米复合材料的作用下，40分钟后罗丹明B几乎100%被光降解，并且该光催化剂在四次循环使用后光催化活性没有明显损失。此外，磁性Fe₃O₄@C@Ag₃PO₄纳米复合材料可以通过外部磁场分离。进一步研究证明，光生空穴是降解过程中的主要活性物种。
