Mesoporous Single-Crystal ZnO Nanowires Epitaxially Sheathed with Zn2SiO4


  • [**]Thanks is expressed for the financial support from the US NSF grant DMR-9733160 and the MURI program from ARO (DAAD19-01-1-0603).


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High-porosity, single-crystal ZnO nanowires have been synthesized for the first time using a solid–vapor process on a Si substrate. The thermal decomposition of ZnO and the formation of a Zn2SiO4 network on the nanowire surface are the keys for forming the high-porosity interior. The structures exhibit a very high surface-to-volume ratio and are expected to have high absorptive capacity and chemical selectivity that could be used for filter and sensor systems.