Key Lab of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
Nanoscale. 2013 Oct 21;5(20):9546-52. doi: 10.1039/c3nr01468a.
Au nanoparticles half-encapsulated in nano iron oxide are prepared and loaded on alumina as a support. The donation of electrons from nano iron oxide to Au nanoparticles is detected and both the properties of gold and iron oxide are adjusted by the donation. The properties are different from the bulk iron oxide supported gold catalysts, in which the iron oxide is little influenced by the electronic interaction between the two components. The catalyst shows noticeably promoted activity for the aerobic oxidation of 1-phenylethanol over Au-Al2O3 and Au-bulk FeOx. The enhanced catalytic behavior may result from the cooperative effect between the Au nanoparticles and nano iron oxide.
金纳米粒子半包裹在纳米氧化铁中，并负载在氧化铝上作为载体。纳米氧化铁向金纳米粒子的电子转移被检测到，金和氧化铁的性质都通过这种转移得到了调整。与负载金的氧化铁催化剂不同，这种电子相互作用对载体氧化铁的性质影响很小。该催化剂在 Au-Al2O3 和 Au- bulk FeOx 上对 1-苯乙醇的有氧氧化表现出明显的活性增强。增强的催化行为可能源于金纳米粒子和纳米氧化铁之间的协同效应。
