应用化学2011，Vol.28Issue(1)：22-26,5.DOI:10.3724/SP.J.1095.2011.00138
核壳结构聚苯胺-聚电解质-碳酸钙微球复合材料的制备、表征和应用
Fabrication, Characterization and Application of Polyaniline-Polyelectrolyte Coated CaCO3 Microparticles Core-Shell Structure
摘要
Abstract
Polyaniline( PAN) was in-situ formed around calcium carbonate(CaCO3) microparticles previously stabilized with polyelectrolyte layers (PEs), generating PAN/( PEs)6/CaCO3 hybrid microparticles. The effects of PEs and concentration of aniline monomer on the stability and morphology of the hybrid microparticles were studied. The obtained hybrid microparticles were characterized by SEM, FT-IR, UV-Vis, etc. Furthermore, the hybrid microparticles were deposited on glassy carbon electrode, which displayed high electrocatalytical activity toward the oxidation of dopamine ( DA). The oxidized peak potential was negatively shifted with a value of 130 mV, compared with that using pure CaCO3 microparticles. The modified electrode showed good reproducibility, and the relative standard deviation ( RSD) was estimated to be about 4. 2％ in 4. 0 mmol/L DA aqueous solution ( n = 5). The obtained hybrid microparticles have great potential in construction of biosensors. The linear range was in the range of 0. 5 ～ 10. 0 mmol/L, with the detection limit of 0.2 mmol/L(3S/N).关键词
碳酸钙/聚电解质/聚苯胺/核壳结构/多巴胺分类
化学化工引用本文复制引用
董文举,席君兰,路雅惠,李中华,张培培..核壳结构聚苯胺-聚电解质-碳酸钙微球复合材料的制备、表征和应用[J].应用化学,2011,28(1):22-26,5.基金项目
国家自然科学基金(20905021,20805011)资助项目 （20905021,20805011）
