Selective H₂S detection by CuO functionalized ZnO nanotetrapods at room temperature

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• 作者：Manmeet Kaur ; Kailasa Ganapathi ; Vignesh Mukund ; Chavi Jain ; Niranjan S. Ramgir ; Niyanta Datta ; S. Bhattacharya ; A.K. Debnath ; D.K. Aswal ; S.K. Gupta
• 关键词：Nanostructures ; Oxides ; Semiconductors ; Vapour deposition ; Electrical properties
• 刊名：Materials Chemistry and Physics
• 出版年：14 February, 2014
• 年：2014
• 卷：143
• 期：3
• 页码：1319-1324
• 全文大小：1377 K

文摘

ZnO nanotetrapods have been synthesized by carbothermal method. The structure, phase, morphology of the synthesized sample were investigated by X-ray diffraction and X-ray photoelectron spectroscopy, Scanning electron microscopy, Transmission electron microscopy and Selected area electron diffraction. The gas-sensing characteristics of thick films of pure and CuO-functionalized ZnO Nanotetrapods have been compared. Pure ZnO nanotetrapod films were found to be sensitive to both H₂S and NO with similar sensitivities, at a temperature of 250-300聽掳C. It is demonstrated that functionalization of ZnO nanotetrapods with CuO, results in selectivity towards H₂S at a lower temperature of 50聽掳C.