摘要
采用二次阳极氧化法在纯净的钛片表面制备出TiO_2纳米管,经表面清洗后将其放入带聚四氟乙烯衬里的反应釜中,同时向釜中加入一定量的Keggin型铁取代杂多酸盐Cs_4PW_(11)O_(39)Fe(III)(H_2O)(CsPW11Fe)水溶液,通过水热法在TiO_2纳米管内生长CsPW_(11)Fe晶体,最终得到CsPW_(11)Fe/TiO_2纳米管修饰电极。通过SEM和XRD对该修饰电极进行了表征,研究了其电化学性能以及对H_2O_2的电催化行为。结果表明,CsPW11Fe/TiO_2纳米管修饰电极的峰电流与峰电位随H_2O_2浓度不同而发生明显的变化,因此可以作为电化学传感器应用于H_2O_2的检测。
TiO2 nanotubes were prepared through a two-step anodic oxidation on the surface of pure titanium thin slice.Then, it and Keggin-type iron-substituted heteropolyacids salt Cs4PW11O39 Fe(III)(H2O)(CsPW11Fe) solution was put into reaction cauldron with Teflon lining. CsPW11Fe crystal grew up inside TiO2 nanotubes and CsPW11Fe/TiO2 nanotubes modified electrode was obtained through the hydrothermal method. The modified electrode was characterized by XRD and SEM.The electrochemical performances of the modified electrode and its electrocatalytic behavior of H2O2 were also investigated.The results show that the peak current and peak potential of CsPW11Fe/TiO2 nanotubes modified electrode have obvious changes with different concentrations of H2O2. Therefore, it is possible to be used as an electrochemical sensor for H2O2 detection.
作者
黄燕霞
章金明
黄彦卿
王崇太
华英杰
HUANG Yanxia;ZHANG Jinming;HUANG Yanqing;WANG Chongtai;HUA Yingjie(School of Chemistry and Chemical Engineering,Hainan Normal University,the key laboratory of electrochemicalenergy storage and energy conversion of Hainan Province,Haikou 571158,China)
出处
《海南师范大学学报（自然科学版）》
CAS
2019年第1期12-17,共6页
Journal of Hainan Normal University（Natural Science）
基金
海南省社会发展专项(ZDYF2017083)
海南师范大学创新创业项目(cxcyxj2018002)
国家级大学生创新训练项目(201511658004)
