Galvanostatic deposition of Pt nanoparticles on TiO2 nanotube arrays for amperometric detection of hydrogen peroxide at low overpotentials
(0) Highly ordered TiO2 nanotube arrays (NTAs) modified with Pt nanoparticles (Pt/TiO2 NTAs) have been prepared by anodization of Ti foils followed by electrochemical deposition and employed to improve the performance of the low-overpotential determination of H2O2 in solution.Morphologies of TiO2 and Pt/TiO2 NTAs were observed by SEM and TEM.The electrochemical behaviors of TiO2 and Pt/TiO2 NTAs were compared by cyclic voltammograms (CVs) in phosphate buffer solutions in absence and prensence of 10 mM H2O2, which showed that Pt nanoparticles can enhance the electrochemical activities of TiO2 NTAs and achieve low-overpotential determination of H2O2.Amperometric method with an applied potential of-100 mV was used for H2O2 detemination, which demonstrated a good H2O2 sensing with sensitivity of 5.4 μA·cm-2·mM-1.
TiO2 nanotube arrays Pt nanoparticles H2O2 detection low overpotential amperometric method
Jiaqin Liu Lili Ruan Guangqing Xu Jun Lv Yucheng Wu
Laboratory of Functional Nanomaterials and Devices, School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China
国际会议
The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)
哈尔滨
英文
174-182
2013-08-23（万方平台首次上网日期，不代表论文的发表时间）