分级结构聚苯胺/多壁碳纳米管纳米复合物的制备、表征及其气敏性能研究

doi:10.3724/SP.J.1077.2010.01092

无机材料学报 ›› 2010, Vol. 25 ›› Issue (10): 1092-1098.DOI: 10.3724/SP.J.1077.2010.01092

分级结构聚苯胺/多壁碳纳米管纳米复合物的制备、表征及其气敏性能研究

肖元化¹, 唐新村^1,2, 王志敏¹, 李峰³, 谌谷春¹, 李连兴¹, 张亮¹

(1. 中南大学化学化工学院, 长沙 410083; 2. 粉末冶金国家重点实验室, 长沙 410083; 3. 郑州轻工业学院河南省表界面科学重点实验室, 郑州 450002)

收稿日期:2010-02-01 修回日期:2010-03-24 出版日期:2010-10-20 网络出版日期:2010-09-26
基金资助:
国家自然科学基金(20876178)

Hierarchical PANI/MWCNT Nanocomposite: Synthesis, Characterization and Gas Sensing Properties

XIAO Yuan-Hua¹, TANG Xin-Cun^1,2, WANG Zhi-Min¹, LI Feng³, CHEN Gu-Chun¹, LI Lian-Xing¹,ZHANG Liang⁴

(1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; 2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 3. State Laboratory of Surface and Interface Science and Technology, Zhengzhou University of Light Industry, Zhengzhou 450002, China)

Received:2010-02-01 Revised:2010-03-24 Published:2010-10-20 Online:2010-09-26
Supported by:
National Nature Science Foundation of China(20876178)

摘要/Abstract

摘要： 采用简单的阳离子表面活性剂诱导原位聚合方法制备了具有针状结构的聚苯胺(PANI)包覆多壁碳纳米管(MWCNTs)的分级结构材料. 分别采用红外光谱(FT-IR)、紫外可见(UV-Vis)、扫描电镜(SEM)、透射电镜(TEM)、热重(TG)、气敏测试等分析测试手段对PANI/MWCNT的组成、形貌、微观结构、热稳定性和气敏性能进行了表征和测试. 结果表明, 在MWCNTs上均匀包覆了约20nm厚的针状PANI, 该材料制备的气敏元件在室温下对NH3的灵敏度, 重复性明显好于纯PANI, 灵敏度也高于非针状PANI包覆的PANI/MWCNT.

关键词: PANI/MWCNT, 气敏材料, 分级结构, 针状, NH₃

Abstract: Hierarchical polyaniline/multiwalled carbon nanotube (MWCNT) nanocables was synthesized by in-situ chemical polymerization directed by cationic surfactant cetyltrimethylammonium bromide (CTAB). Morphological and structural characteristics, gas-sensing properties, as well as thermal stability of the hybrid nanocomposites were characterized by using various techniques, including Fourier transform infrared spectroscope (FT-IR), UV-Visible absorption spectrum(UV-Vis), scanning electron microscope (SEM), transmission electronmicroscope (TEM), thermogravimetric analyzer and gas-sensing measurement. The results indicate that the as-prepared PANI/MWCNT is uniform with 20nm thick needle-like PANI shell. The sensors based on PANI/MWCNT nanocomposites and pure PANI are tested for ammonia gas. Compared with the reported PANI/MWCNT without needle-like PANI, the as-prepared PANI/MWCNT nanocomposites sensors have higher sensitivity and repeatability, and better response/reproducibility towards ammonia at room temperature and also exhibits the higher sensitivity.

Key words: PANI/MWCNT, gas sensing, hierarchical, needle-like, ammonia

中图分类号:

TP212

肖元化, 唐新村, 王志敏, 李峰, 谌谷春, 李连兴, 张亮. 分级结构聚苯胺/多壁碳纳米管纳米复合物的制备、表征及其气敏性能研究[J]. 无机材料学报, 2010, 25(10): 1092-1098.

XIAO Yuan-Hua, TANG Xin-Cun, WANG Zhi-Min, LI Feng, CHEN Gu-Chun, LI Lian-Xing, ZHANG Liang. Hierarchical PANI/MWCNT Nanocomposite: Synthesis, Characterization and Gas Sensing Properties[J]. Journal of Inorganic Materials, 2010, 25(10): 1092-1098.

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分级结构聚苯胺/多壁碳纳米管纳米复合物的制备、表征及其气敏性能研究

Hierarchical PANI/MWCNT Nanocomposite: Synthesis, Characterization and Gas Sensing Properties

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