Facile Production of Self-Assembly Hierarchical Dumbbell-Like CoOOH Nanostructures and Their Room-Temperature CO-Gas-Sensing Properties

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• 作者：Baoyou Geng ; Fangming Zhan ; Han Jiang ; Zhoujing Xing ; Caihong Fang
• 刊名：Crystal Growth & Design
• 出版年：2008
• 出版时间：October 1, 2008
• 年：2008
• 卷：8
• 期：10
• 页码：3497-3500
• 全文大小：264K
• 年卷期：v.8,no.10(October 1, 2008)
• ISSN：1528-7505

文摘

In this paper, we report a simple and novel coordination compound precursor route to synthesize the hierarchical dumbbell-like CoOOH nanostructures in high yield. A possible growth mechanism governing the formation of such nanostructures is discussed. The CO-gas-sensing properties of the as-synthesized nanostructures are investigated in detail. The dumbbell-like CoOOH nanostructures have a large active surface area of {110} facets, which can provide sufficient space for the interaction between CoOOH and the detected gases. As a result, the as-prepared dumbbell-like CoOOH nanostructures exhibit a superior sensitivity to CO at room temperature, as well as good reproducibility and short response/recovery times. The as-prepared CoOOH nanostructures could have potential applications in nanosensors.