Li Na, Zhang Xiaoyu, Yuan Shulong, Zhang Xiaokai, Yuan Yuzhen, Li Xue
Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan 250022, People's Republic of China.
Phys Chem Chem Phys. 2015 May 14;17(18):12023-30. doi: 10.1039/c4cp06093h.
Composite nanoparticles (NPs) containing a TiO2 outer shell and an inner core of hollow AuAg NPs (H-AuAg-NPs) were prepared using hollow AuAg NPs with block copolymer shells as templates, and their photocatalytic activities were investigated by the decomposition of methylene blue dye under UV irradiation. It was found that the H-AuAg-NP-TiO2 composite NPs showed higher photocatalytic activity than AuAg alloy-TiO2 composite NPs, Ag/TiO2 NPs and TiO2 NPs. In addition, the photocatalytic activity first increases with increasing the TiO2 content from 2.5% to 5.0% and then decreases with a further increase in TiO2 content from 10.0% to 15.0%.
以带有嵌段共聚物壳层的中空金银纳米粒子（H-AuAg-NPs）为模板，制备了具有TiO₂外壳和中空金银纳米粒子内核的复合纳米粒子（NPs），并通过在紫外光照射下亚甲基蓝染料的分解来研究其光催化活性。结果发现，H-AuAg-NP-TiO₂复合纳米粒子比金银合金-TiO₂复合纳米粒子、Ag/TiO₂纳米粒子和TiO₂纳米粒子表现出更高的光催化活性。此外，光催化活性首先随着TiO₂含量从2.5%增加到5.0%而增加，然后随着TiO₂含量从10.0%进一步增加到15.0%而降低。
