| 引用本文: | 陈垒,王洪杰,柴丽雅,付雪东,井立强,史克英,李丽.MWCNTs/多孔ZnO纳米材料的制备及室温NO气敏性研究[J].材料科学与工艺,2012,20(3):24-28.DOI:10.11951/j.issn.1005-0299.20120305. |
| CHEN Lei,WANG Hong-jie,CHAI Li-ya,FU Xue-dong,JING Li-qiang,SHI Ke-ying,LI Li.Preparation of multi-walled carbon nanotubes-porous ZnO nanosheets composites and its gas sensor properties for NO detection at room temperature[J].Materials Science and Technology,2012,20(3):24-28.DOI:10.11951/j.issn.1005-0299.20120305. |
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| MWCNTs/多孔ZnO纳米材料的制备及室温NO气敏性研究 |
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陈垒1,2, 王洪杰1, 柴丽雅1, 付雪东1, 井立强1, 史克英1, 李丽1,2
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1.黑龙江大学 功能无机材料化学省部共建教育部重点实验室,哈尔滨 150080;2.黑龙江大学 黑龙江省普通高等学校高效转化的化工过程与技术重点实验室，哈尔滨 150080
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| 摘要: |
| 为开发室温气敏传感器材料，以Zn(NO3)2·6H2O为锌源、尿素为沉淀剂，在制备水合碱式碳酸锌(Zn4CO3(OH)6·H2O)的过程中加入羧基化的MWCNTs (MWCNTCOOH)，焙烧制备了MWCNTs/ZnO复合材料.采用XRD，SEM和TEM等对其进行了分析.结果表明：复合材料中MWCNTs分散均匀，ZnO呈多孔纳米片状，纳米片由多个尺寸在10~20 nm的ZnO颗粒组成；在室温、空气湿度为50%的氛围中测试复合材料对NO的气敏响应发现，复合材料对体积浓度1×10-4的NO气敏响应灵敏度大约是MWCNTCOOH的3倍，明显高于MWCNTCOOH；对比加入不同量MWCNTCOOH制备的3种复合材料对NO的气敏性可知，加入200 mg MWCNTCOOH所制备的复合材料对低浓度（体积浓度≤ 50×10-6）的NO气体表现出较高的灵敏度. |
| 关键词: 多壁碳纳米管 多孔ZnO纳米片 NO 室温 气敏特性 |
| DOI：10.11951/j.issn.1005-0299.20120305 |
| 分类号:O643.364 |
| 基金项目:国家自然科学基金资助项目(21076066)；黑龙江省自然科学基金重点项目(ZD201002)；黑龙江大学高层次人才（创新团队）支持计划（Hdtd2010-02）；黑龙江大实验室开放基金项目（11K075,11K076）. |
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| Preparation of multi-walled carbon nanotubes-porous ZnO nanosheets composites and its gas sensor properties for NO detection at room temperature |
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CHEN Lei1,2, WANG Hong-jie1, CHAI Li-ya1, FU Xue-dong1, JING Li-qiang1, SHI Ke-ying1, LI Li1,2
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1.Key Laboratory of Functional Inorganic Material Chemistry,Ministry of Education,Heilongjiang University,Harbin 150080,China;2.Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion，College of Heilongjiang Province，Heilongjiang University,Harbin 150080,China
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| Abstract: |
| To develop sensor materials at room temperature,multi-walled carbon nanotubes and ZnO composites were synthesized by using urea,zinc nitrate and carboxylated MWCNTs(MWCNTCOOH) as raw materials with homogeneous precipitation method and calcination.The structures and morphologies of the MWCNTs/ZnO composites were characterized by XRD,SEM and TEM.The results showed that a homogeneous distribution of MWCNTs in the composites was observed while ZnO existed as porous nanosheets consisting of many ZnO nanoparticles.The sensor response of the composites to NO was examined at room temperature with a relative humidity of 50%.The MWCNTs/ZnO sensor′s sensitivity was increased by a factor of three in comparison with that of MWCNTCOOH for NO at 1×10-4,because the porous ZnO nanosheets had larger surface area and the electron transfer between MWCNTs and ZnO could facilitate the decrease of the MWCNTs resistance.Hybrid material with 200 mg MWCNTCOOH exhibits higher response than other hybrid materials for NO detection at low concentrations (≤ 50×10-6). |
| Key words: multi-walled carbon nanotubes porous ZnO nanosheets NO room temperature gas sensor |
