Platelet-like nickel hydroxide: Synthesis and the transferring to nickel oxide as a gas sensor

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• 作者：Guoxing Zhu ; Huan Xu ; Yuanjun Liu ; Chunyan Xi ; Jing Yang ; Xiaoping Shen ; Jun Zhu ; Jinglei Yang
• 关键词：Ni(OH)2 ; Gas sensing ; Nanoplatelet ; Oxide
• 刊名：Journal of Colloid and Interface Science
• 出版年：2013
• 出版时间：15 December, 2013
• 年：2013
• 卷：412
• 期：Complete
• 页码：100-106
• 全文大小：2023 K

文摘

Free-standing Ni(OH)₂ platelet-like nanostructures with average width of 124 nm and thickness of 19 nm were successfully prepared through a simple one-pot polymer assisted process. The preparation involves the assistance of poly (sodium-4-styrene sulfonate) (PSS) and is easy to perform. The influence of pH value on the structure of the Ni(OH)₂ product was investigated and it was found that pH value plays an important role for the formation of free-standing Ni(OH)₂ nanoplatelets. A possible formation mechanism is proposed. In addition, from the obtained Ni(OH)₂ nanoplatelets, a NiO sensor was fabricated and tested, which exhibits a 5 ppm sensing sensitivity to ethanol and propanol.