Novel biotemplated MnO2 1D nanozyme with controllable peroxidase-like activity and unique catalytic mechanism and its application for glucose sensing

被引:118
作者
Han, Lei [1 ]
Shi, Jianguo [2 ,3 ,4 ,6 ]
Liu, Aihua [2 ,3 ,4 ,5 ]
机构
[1] Qingdao Agr Univ, Coll Chem & Pharmaceut Sci, 700 Changcheng Rd, Qingdao 266109, Peoples R China
[2] Qingdao Univ, Inst Biosensing, 308 Ningxia Rd, Qingdao 266071, Peoples R China
[3] Qingdao Univ, Coll Chem & Chem Engn, 308 Ningxia Rd, Qingdao 266071, Peoples R China
[4] Qingdao Univ, Joint Key Lab Biosensors Shangdong Prov, 308 Ningxia Rd, Qingdao 266071, Peoples R China
[5] Qingdao Univ, Coll Life Sci, Qingdao 266021, Peoples R China
[6] Shandong Acad Sci, Inst Biol, 19 Keyuan Rd, Jinan 250014, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
Biomineralization; Biotemplate; Nanozyme; MnO2; nanowires; Glucose sensor; IRON-OXIDE NANOPARTICLES; HORSERADISH-PEROXIDASE; CO3O4; NANOPARTICLES; HYDROGEN-PEROXIDE; NANORODS; NANOSTRUCTURES; NANOMATERIALS; MICROSPHERES; INTERFACES; NANOWIRES;
D O I
10.1016/j.snb.2017.06.096
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
To get recyclable and highly active peroxidase mimetics, MnO2 nanowires (NWs) were prepared by using genetically engineered filamentous phages as biotemplates. The morphology of NWs was tailored by controlling the synthesis temperature. The synthesis conditions could influence the peroxidase-like activity of MnO2 NWs. The catalytic mechanism of the prepared MnO2 NWs was investigated, which is Pingpong BiBi electron transfer mechanism, different from Fenton reaction and some other mechanisms of nanozymes reported so far. Based on the excellent catalytic activity and stability, MnO2 NWs coupled with glucose oxidase were applied to the colorimetric sensing glucose, which showed the good re-utilization performance and reproducibility. The MnO2 NWs are promising to be applied to the bioanalysis and industrial catalyst. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:919 / 926
页数:8
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