کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1429491 | 987175 | 2013 | 8 صفحه PDF | دانلود رایگان |
• Electrochemically active biofilm (EAB)
• EAB mediated synthesis of Ag@TiO2 nanocomposite
• Ag@TiO2 nanocomposite modified glassy carbon electrode
• Ag@TiO2/GCE for H2O2 sensing
• Nonenzymatic sensor for H2O2
A novel nonenzymatic sensor for H2O2 was developed based on an Ag@TiO2 nanocomposite synthesized using a simple and cost effective approach with an electrochemically active biofilm. The optical, structural, morphological and electrochemical properties of the as-prepared Ag@TiO2 nanocomposite were examined by UV–vis spectroscopy, X-ray diffraction, transmission electron microscopy and cyclic voltammetry (CV). The Ag@TiO2 nanocomposite was fabricated on a glassy carbon electrode (GCE) and their electrochemical performance was analyzed by CV, differential pulse voltammetry and electrochemical impedance spectroscopy. The Ag@TiO2 nanocomposite modified GCE (Ag@TiO2/GCE) displayed excellent performance towards H2O2 sensing at − 0.73 V in the linear response range from 0.83 μM to 43.3 μM, within a detection limit and sensitivity of 0.83 μM and ~ 65.2328 ± 0.01 μAμM− 1 cm− 2, respectively. In addition, Ag@TiO2/GCE exhibited good operational reproducibility and long term stability.
Synthesis of Ag@TiO2 nanocomposite by electrochemically active biofilm for H2O2 sensing.Figure optionsDownload as PowerPoint slide
Journal: Materials Science and Engineering: C - Volume 33, Issue 8, 1 December 2013, Pages 4692–4699