State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
Nanotechnology. 2013 Aug 30;24(34):345704. doi: 10.1088/0957-4484/24/34/345704. Epub 2013 Jul 30.
Delafossite CuCrO2 and spinel CuCr2O4 with mesoporous structures have been successfully synthesized using nanocasting methods based on a KIT-6 template. The functional activity of the mesoporous materials was evaluated in applications as heterogeneous catalysts. The activity for photocatalytic hydrogen production of the delafossite structures with different morphologies was characterized and the oxidation state changes associated with photocorrosion of Cu(+) investigated using electron energy loss spectroscopy (EELS). Mg(2+) doping was found to facilitate the casting of ordered structures for CuCrO2 and improves the photocorrosion resistance of delafossite structures. The mesoporous spinel CuCr2O4 nanostructures were found to be active for low temperature CO oxidation.
介孔结构的拉多佛石型 CuCrO2 和尖晶石型 CuCr2O4 是通过基于 KIT-6 模板的纳米铸造方法成功合成的。介孔材料的功能活性在非均相催化剂的应用中进行了评估。通过电子能量损失谱 (EELS) 对不同形貌的拉多佛石结构的光催化产氢活性进行了表征，并研究了与 Cu(+)光腐蚀相关的氧化态变化。发现 Mg(2+)掺杂有利于有序结构的铸造，提高了拉多佛石结构的光腐蚀性。介孔尖晶石 CuCr2O4 纳米结构在低温 CO 氧化中具有活性。
