Department of Electrical and Computer Engineering, National University of Singapore, Singapore.
Nanotechnology. 2011 Jun 10;22(23):235701. doi: 10.1088/0957-4484/22/23/235701. Epub 2011 Apr 7.
A facile large-scale synthesis approach for producing intrinsically p-type nanowires with uniform coverage of nanocrystals to form a highly interconnected porous nanowire network is of great demand for p-type sensing. Here, we have demonstrated synthesis of a very high aspect ratio (10(2)-10(5)) open network of interconnected hybrid nanocrystals-nanowire copper and copper oxide nanomaterials. The copper nanowire scaffold is employed to realize a porous and highly interconnected network of hybrid metal-metal oxide nanocrystal-nanowire structures. The structural and composition tunability of the hybrid nanomaterials is demonstrated. The hybrid copper-copper oxide nanowires exhibit enhanced gas/light sensing properties without any operating temperature. This may be attributed to enhanced medium diffusion due to the porous network of highly interconnected nanocrystal-nanowire structures.
对于用于 p 型传感的材料而言，制备具有均匀覆盖纳米晶体的本征 p 型纳米线的大规模简易合成方法具有很大的需求。在此，我们已经展示了具有非常高纵横比（10(2)-10(5)）的互穿混合纳米晶-纳米线铜和氧化铜纳米材料的开放网络的合成。采用铜纳米线支架来实现混合金属-金属氧化物纳米晶-纳米线结构的多孔和高度互穿网络。已经证明了混合纳米材料的结构和组成的可调变性。混合的铜-氧化铜纳米线在无需任何工作温度的情况下表现出增强的气体/光传感性能。这可能归因于高度互穿的纳米晶-纳米线结构多孔网络增强了介质的扩散。
