抗坏血酸
铁酸锌
检出限
化学
过氧化物酶
催化作用
锌
苝
热液循环
核化学
无机化学
光化学
有机化学
化学工程
色谱法
酶
分子
工程类
食品科学
作者
Haoyuan Lyu,Xiuchen Zhao,Xiuxiu Yao,Wei Chen,Zhenxue Liu,Linna Gao,Gao-Chao Fan,Xixi Zhu,Qingyun Liu,Xianxi Zhang,Xiao Zhang
标识
DOI:10.1016/j.colsurfa.2019.124250
摘要
3,4:9,10-perylene tetracarboxylic acid (PTCA) modified litchi-like zinc ferrite (ZnFe2O4) was prepared by a simple hydrothermal method and was found to possess the enhanced peroxidase-like activity. Under the catalysis of PTCA-ZnFe2O4, the colorless colorimetric substrate 3,3′,5,5′-tetramethylbenzidine (TMB) was rapidly oxidized by H2O2 and fast turned into blue color. Comparatively, the peroxidase-like activity of PTCA-ZnFe2O4 nanocomposites is higher than that of pure ZnFe2O4. In addition, it is hydroxyl radical that plays the key role in the process of catalysis reaction, which verified by fluorescent probe. On the basis of the higher peroxidase-like activity of PTCA-ZnFe2O4, a simple colorimetric biosensor platform has been proposed for detection of ascorbic acid (AA) in the linear range of 1−10 μM with the detection limit of 0.834 μM.
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