| 半导体硫化银纳米球的控制合成及室温气敏性 |
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| 引用本文： | 刘利生,周少敏,苑红磊,陈西良,娄世云,郝耀明,袁瑞建,李宁.半导体硫化银纳米球的控制合成及室温气敏性[J].科学通报,2011,56(27):2344-2350. |
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| 作者姓名： | 刘利生 周少敏 苑红磊 陈西良 娄世云 郝耀明 袁瑞建 李宁 |
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| 作者单位： | 河南大学特种功能材料教育部重点实验室; |
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| 基金项目： | 国家自然科学基金(20971036); 河南省创新型科技人才队伍建设工程(094100510015); 河南省高校科技创新人才支持计划(2008HASTIT002)资助项目 |
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| 摘 要： | 通过改良的水热方法, 成功合成了形貌规则的半导体硫化银(Ag2S)纳米结构, 并对样品的形貌、化学成分和微观结构进行了详细的表征. 结果发现, 样品为表面光滑的球状结构. X-射线衍射仪/光电子谱仪(XRD/XPS)证明, 产物具有单斜结构且纯度很高. 通过紫外可见吸收光谱发现, 与传统粉体材料相比, 纳米球吸收峰有明显的蓝移(约20 nm). 运用表面光电压(surface photovoltage, SPV)技术系统地研究了Ag2S 纳米球及传统粉体材料对乙醇气体的室温敏感特性, 在同样条件下, 纳米球的检测限可达<10 mL/m3, 而后者仅为50 mL/m3. 这为Ag2S气敏纳米器件的潜在应用进行了一些探索.
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| 关 键 词： | 纳米球 硫化银 半导体 气敏性 |
| 收稿时间： | 2010-12-14 |
Controlled synthesis of Ag_2S nanospheres and their application in room temperature gas sensors |
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| LIU LiSheng,ZHOU ShaoMin,YUAN HongLei,CHEN XiLiang,LOU ShiYun,HAO YaoMing,YUAN RuiJian & LI Ning Key Laboratory for Special Functional Materials of the Ministry of Education,Henan University,Kaifeng ,China.Controlled synthesis of Ag_2S nanospheres and their application in room temperature gas sensors[J].Chinese Science Bulletin,2011,56(27):2344-2350. |
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| Authors: | LIU LiSheng ZHOU ShaoMin YUAN HongLei CHEN XiLiang LOU ShiYun HAO YaoMing YUAN RuiJian & LI Ning Key Laboratory for Special Functional Materials of the Ministry of Education Henan University Kaifeng China |
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| Institution: | LIU LiSheng,ZHOU ShaoMin,YUAN HongLei,CHEN XiLiang,LOU ShiYun,HAO YaoMing,YUAN RuiJian & LI Ning Key Laboratory for Special Functional Materials of the Ministry of Education,Henan University,Kaifeng 475004,China |
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| Abstract: | Silver sulfide (Ag2S) nanospheres (NSs) were fabricated by a modified hydrothermal strategy. The obtained products were characterized by powder X-ray diffraction, photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy and UV-vis absorption techniques. The highly pure Ag2S NSs possessed a monoclinic structure, smooth surface, and their optical absorption spectra exhibited a blue shift of 20 nm compared with that of bulk Ag2S. The gas sensing properties of Ag2S NSs and conv... |
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| Keywords: | nanospheres silver sulfide semiconductor gas sensing |
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