TiO_2纳米颗粒增强的过氧化氢生物传感器

Using TiO_2 Nanoparticles to Enhance Current Response of the Hydrogen Peroxide Biosensor

采用TiO2纳米颗粒与聚乙烯醇缩丁醛(PVB)作为固酶基质,用凝胶溶胶法固定辣根过氧化物酶(HRP),构成的过氧化氢生物传感器.研究了该修饰电极在磷酸缓冲液中对H2O2的催化作用及实验条件的影响·实验结果表明,纳米TiO2颗粒的引入可以明显的提高HRP对H2O2响应电流.

A hydrogen peroxide biosensor is described,which is fabricated by immobilizing HRP（horseradish peroxidase） with the gel-sol method, with TiO2 nanoparticles and PVB （polyvinyl butyral） as the immobilization matrix.A study of the electrochemical response of the resulting sensor to the reduction of hydrogen peroxide and the factors influencing its performances has demonstrated that the TiO2 nanoparticles can enhance the current response of HRP to hydrogen peroxide.