聚噻吩/碳纳米管复合物的元件制作及其气敏响应性的应用测试

Electrode Fabrication of Polythiophene/Carbon Nanotube Composite and Application Test of Its Gas Sensitivity

本文通过化学氧化法以3,4-乙撑二氧噻吩聚合聚3,4-乙撑二氧噻吩(PEDOT),得到固体粉末样品,用液体胶水作为联体,在其掺杂功能化碳纳米管(f-CNTS)与聚噻吩,制备了复合纳米材料,并制作系列工作电极,利用自制气敏装置,应用于含甲醛的饱和汽体测试研究。测试数据表明,掺杂不同含量的碳纳米管与聚噻吩,对不同浓度的甲醛气敏响应性测试,由其电极材料的微型结构的变化,电阻规律性变化表现出不同的气敏响应性。同时,与单一种物质作用相比,复合材料膜有更好的电子传递行为,表现灵敏的响应性。

Poly（3,4-ethylenedioxythiophene）（ PEDOT） was synthesized from 3,4-ethylenedioxythiophene by chemical oxidation polymerization. A series of working electrodes coated with nanocomposite,made by blending PEDOT powder and functionalized carbon nanotubes（ f-CNTS） powder with liquid glue as crosslinking reagent,were applied to the test of saturated vapor containing formaldehyde on the self-made gas sensitive device. Test results indicated that contents of MWNTs polythiophene,and concentrations of formaldehyde had different effects on the structure of the micro gas sensitive response. Meanwhile,compared with the single material,the composite membrane had a better electron transfer behavior,indicating a better gas sensitivity.