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金纳米颗粒掺杂PEDOT多孔导电聚合物的电化学合成及其亚硝酸盐传感应用
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作者单位
宋瑱,范高超,战书函,马艺慧,罗细亮 青岛科技大学化学与分子工程学院 
基金项目:国家自然科学基金资助项目(21422504,21675093)
中文摘要:该文以聚苯乙烯微球为模板,利用电化学方法制备了金纳米颗粒(AuNPs)掺杂的三维多孔聚3,4 乙烯二氧噻吩(PEDOT)纳米材料,该材料对亚硝酸盐的氧化展现出优异的电催化活性,这是由于其独特的三维(3D)纳米多孔结构可以掺杂更多的AuNPs,从而提供大量的活性位点用于亚硝酸盐的催化。此外,3D孔状结构还可促进亚硝酸盐离子的扩散从而加快电子的传递。所构建的传感器用于亚硝酸盐的检测,其线性范围为02~2 200 μmol/L,检出限为70 nmol/L。该传感器展现出优异的选择性、长期的稳定性和良好的重现性,用于实际样品检测,与标准方法的测试结果一致。
中文关键词:纳米多孔结构  导电聚合物  聚3,4 乙烯二氧噻吩(PEDOT)  金纳米颗粒  亚硝酸盐传感器  电聚合
 
Electrochemical Synthesis of a Porous Conducting PEDOT Polymer Doped with Gold Nanoparticles and Its Application in Sensing Nitrite
Abstract:A three dimensional(3D) porous conducting PEDOT nanocomposite doped with gold nanoparticles(AuNPs) was fabricated by polymerizing 3,4 ethylenedioxythiophene(EDOT)monomers and gold nanoparticles on a template of 3D arrayed polystyrene(PS)nanospheres,then removing the PS template.The nanostructure of prepared 3D porous AuNPs/PEDOT exhibited an excellent electrocatalytic property toward the oxidation of nitrite owing to its unique microstructure,where the doped AuNPs provided many active sites for the oxidation of nitrite,and the 3D porous structure facilitated the diffusion of nitrite molecules and accelerated the electron transfer.Based on this,the modified electrode was used in the detection of nitrite with a detection limit of 70 nmol/L and a wide linear range of 02-2 200 μmol/L.With the advantages of excellent selectivity,long term stability and good reproducibility,this sensor was applied in detection of nitrite in practical samples,and the results were consistent with those obtained by the standard method.
Key Words:Electrochemical Synthesis of a Porous Conducting PEDOT Polymer Doped with Gold Nanoparticles and Its Application in Sensing Nitrite
引用本文:宋瑱,范高超,战书函,马艺慧,罗细亮.金纳米颗粒掺杂PEDOT多孔导电聚合物的电化学合成及其亚硝酸盐传感应用[J].分析测试学报,2018,37(10):1251-1257.
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