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Ni摻雜SnO2的光譜特性及氣敏性能研究
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遼寧省教育廳科研計(jì)劃項(xiàng)目（L2013203）；中央高?；究蒲袠I(yè)務(wù)費(fèi)項(xiàng)目 (3132013085)


Spectroscopic Analysis and Gas Sensing Performance of Ni-doped SnO2
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    摘要:

    采用溶劑熱法將Ni摻雜到納米SnO2中，分別利用TEM、EDAX、XRD、Raman和XPS表征了Ni摻雜后SnO2的微觀形貌、結(jié)構(gòu)和元素組成特征，分析了Ni摻雜對(duì)增強(qiáng)SnO2氣敏性能的作用機(jī)理。實(shí)驗(yàn)結(jié)果表明，Ni的摻雜可抑制SnO2晶粒增長，減小SnO2晶粒尺寸，進(jìn)而提升傳感器的氣敏性能。少量的Ni摻雜能夠使Ni2+進(jìn)入SnO2晶格中取代Sn4+產(chǎn)生氧空位，促進(jìn)SnO2氣敏性能的提高；而當(dāng)Ni摻雜量達(dá)到30%時(shí)，會(huì)導(dǎo)致部分Ni以其他的形式存在于SnO2晶體表面上，降低SnO2氣敏性能

    Abstract:

    Ni-doped SnO2 powders were prepared by the solvethermal method. The morphology, structure and elemental composition of Ni-doped SnO2 were characterized by TEM, EDAX, XRD, Raman and XPS. Gas sensing properties of Ni-doped SnO2 were also investigated by sensitivity measurements. The results show that Ni doping inhibits the grain growth of SnO2 and decreases the grain size, thus enhancing the gas sensitivity of SnO2. Oxygen vacancies formed by the substitution of Ni2+ for Sn4+ in the SnO2 matrix improves the gas sensing performance at low level of Ni doping. However, when Ni concentration reaches 30 wt%, the addition of Ni to SnO2 decreases gas sensitivity, which is attributed to the counteraction of the n- and p-type sensors

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肖井坤,宋成文,張肖妮,初 璇,吳帥華,成慕榮,宋明艷,于迎濤. Ni摻雜SnO2的光譜特性及氣敏性能研究[J].稀有金屬材料與工程,2015,44(10):2509~2512.[Xiao Jingkun, Song Chengwen, Zhang Xiaoni, Chu Xuan, Wu Shuaihua, Cheng Murong, Song Mingyan, Yu Yingtao. Spectroscopic Analysis and Gas Sensing Performance of Ni-doped SnO2[J]. Rare Metal Materials and Engineering,2015,44(10):2509~2512.]
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  • 收稿日期:2014-10-28
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  • 在線發(fā)布日期: 2016-07-13
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