聚吡咯
非阻塞I/O
催化作用
材料科学
化学工程
纳米材料
过氧化物酶
纳米技术
抗坏血酸
化学
有机化学
酶
聚合物
复合材料
聚合
食品科学
工程类
作者
Na Song,Ce Wang,Xiaofeng Lu
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2020-07-08
卷期号:8 (30): 11069-11078
被引量:32
标识
DOI:10.1021/acssuschemeng.0c00249
摘要
Recently, hybrid biocatalysts with a unique interfacial structure have attracted significant attention for enzyme mimicking due to their superior catalytic activity compared with the single component catalyst. In this work, novel sheet-on-tube heterostructured polypyrrole (PPy)@CoO/NiO nanotubes (NTs) are synthesized via an in situ growth strategy and are utilized for enzyme mimicking and sensing applications. The as-prepared PPy@CoO/NiO NTs can catalyze H2O2 into ·OH and realize the 3,3′,5,5′-tetramethylbenzidine (TMB) oxidation, showing an excellent peroxidase-like property. Thanks to the synergistic effect between PPy NTs and CoO/NiO nanosheets, the catalytic performance of the resultant PPy@CoO/NiO NTs is superior to individual PPy NTs and bare CoO/NiO sheets as well as their physical mixture. In addition, the PPy@CoO/NiO NTs can also catalyze the H2O2 decomposing to generate O2, possessing a catalase-like property. Then, we perform a simple visual method for sensitively detecting H2O2 and ascorbic acid (AA). This work demonstrates a distinctive route to promote the catalytic performance of enzyme-like nanomaterials for huge potentials in biotechnology and environment fields.
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