纳米金检测过氧化氢及其电流信号增强因素分析

Detection of Hydrogen Peroxide by Gold Nanoparticles and Analysis of Its Current Signal Enhancement Factors

对金纳米颗粒与聚电解质(PAH/PSS)进行层层自组装构建了复合薄膜电极,将其用于过氧化氢检测,并对影响过氧化氢电流信号增强的因素进行了分析。结果表明,随着自组装层数的增加,循环伏安电流明显增大;以聚电解质结合纳米材料设计传感器时,需考虑所合成材料的密度与局限性、颗粒之间的电子耦合、纳米材料修饰配体等问题。

To detect hydrogen peroxide,a composite film electrode was constructed by gold nanoparticles and polyelectrolyte（PAH/PSS）vialayer by layer self-assembly technique.And the current signal enhancement factors of hydrogen peroxide were analyzed.Results indicated that,with the increase of self-assembly layer,the cyclic voltammetry current was obviously increased.A series of problems such as density and limitations of materials,electronic coupling of nanoparticles,modified ligand of nanocomposites need to be considered when constructing sensor by polyelectrolyte combined with nanocomposites.