Robust cobalt perforated with multi-walled carbon nanotubes as an effective sensing material for acetone detection†,Inorganic Chemistry Frontiers

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Robust cobalt perforated with multi-walled carbon nanotubes as an effective sensing material for acetone detection†
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2018-08-31 00:00:00 , DOI: 10.1039/c8qi00706c
Rui Zhang _{1,

2,

3,

4,

5} , Ming Zhang _{1,

2,

3,

4,

5} , Tingting Zhou _{1,

2,

3,

4,

5} , Tong Zhang _{1,

2,

3,

4,

5}

Affiliation

Herein, we report the development of a facile hydrothermal method to fabricate plum and octahedron-like cobalt tetroxide (Co₃O₄) particles decorated with multi-walled carbon nanotube (MWCNT) one-dimensional (1D) hybrid structures. The morphology of Co₃O₄ particles on MWCNTs was controlled by changing the volume ratios of a mixed solvent of ethylene glycol and water. The Co₃O₄ particles grew on and across MWCNTs, resulting in structures with necklace-like morphology. The assembled MWCNTs/Co₃O₄ composites were used to detect acetone vapors and showed enhanced sensing performances than a pure MWCNT-based sensor. This enhanced gas sensing performance could be due to the structural integrity of the hybrid nanostructure as well as the surface defects and catalytic Co cations on the surfaces of MWCNT and Co₃O₄ octahedra, respectively.

中文翻译：

坚固的钴穿孔的多壁碳纳米管，可作为有效的丙酮检测传感材料†

在这里，我们报告了一种简便的水热方法的发展，以制造饰有多壁碳纳米管（MWCNT）一维（1D）杂化结构的李子和八面体状四氧化钴（Co ₃ O ₄）颗粒。通过改变乙二醇和水的混合溶剂的体积比，可以控制MWCNTs上Co ₃ O ₄颗粒的形貌。Co ₃ O ₄颗粒在多壁碳纳米管上和整个碳纳米管上生长，形成具有项链状形态的结构。组装好的MWCNTs / Co ₃ O ₄复合材料被用于检测丙酮蒸气，并显示出比纯基于MWCNT的传感器更高的传感性能。这种增强的气体感测性能可能是由于杂化纳米结构的结构完整性以及MWCNT和Co ₃ O ₄八面体的表面上的表面缺陷和催化Co阳离子。

更新日期：2018-08-31

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