title: Determination of hydrogen peroxide using amperometric sensor of polyaniline doped with ferrocenesulfonic acid.
abstract: The result of cyclic voltammetry shows that polyaniline doped with ferrocenesulfonic acid (PAnFc) can effectively catalyze the oxidation of hydrogen peroxide, so PAnFc is used as a sensor to determine the concentration of H2O2. Iron in the ferrocenesulfonic acid exists in two oxidation states: Fe2+ and Fe3+. They can reversibly oxidize and reduce between the Fe2+ and Fe3+ oxidation states, which play an important role in the catalytic oxidation of H2O2. The response current of the sensor depends on the pH, applied potential and temperature at a given concentration of H2O2. At optimum conditions, the sensor has a fast response to H2O2, good operational stability, a good linear response to H2O2 in the range from 4 to 64 microM, and a small temperature dependence of the response current.
authors.affiliation: Department of Chemistry, Yangzhou University, Yangzhou 225002, China.
authors.forename: Yifei
authors.initials: Y
authors.lastname: Yang
authors.forename: Shaolin
authors.initials: S
authors.lastname: Mu
mesh_terms: D000814:Aniline Compounds; D015374:Biosensing Techniques / Q000295:instrumentation*; D004563:Electrochemistry; D005296:Ferrous Compounds; D006861:Hydrogen Peroxide / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D000075163:Metallocenes; D013451:Sulfonic Acids; D013696:Temperature
chemical_list: D000814:Aniline Compounds; D005296:Ferrous Compounds; D000075163:Metallocenes; D013451:Sulfonic Acids; C416807:polyaniline; D006861:Hydrogen Peroxide; C004998:ferrocene