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Genetically Engineered Phage-Templated MnO2 Nanowires: Synthesis and Their Application in Electrochemical Glucose Biosensor Operated at Neutral pH Condition
Han, Lei1,2,3; Shao, Changxu1,2,3; Liang, Bo3; Liu, Aihua1,2
2016-06-08
发表期刊ACS APPLIED MATERIALS & INTERFACES
卷号8期号:22页码:13768-13776
摘要To conveniently obtain one-dimensional MnO2 nanowires (NWs) with controlled structure and unique properties for electron transfer, the genetically engineered M13 phages were used as templates for precise nucleation and growth of MnO2 crystals in filamentous phage scaffolds, via the spontaneous oxidation of Mn2+ in alkaline solution. It was found that the morphology of NWs could be tailored by the surface charge of M13 mutants. MnO2 crystals were uniformly distributed on the surface of negatively charged tetraglutamate-fused phage (M13-E4), significantly different from irregular MnO2 agglomeration on the weakly negatively charged wild-type phage and positively charged tetraarginine-fused phage. The as-synthesized M13-E4@MnO2 NWs could catalyze the electro-oxidation of H2O2 at neutral pH. To demonstrate the superiority of the electrocatalytic activity in the solution containing plenty of chloride ions at neutral pH, both glucose oxidase and as-prepared MnO2 NWs were used for fabricating the glucose biosensor. The proposed biosensor showed a wide linear range (5 mu M to 2 mM glucose), a low limit of detection of 1.8 mu M glucose (S/N = 3), good interassay and intra-assay reproducibility and satisfactory storage stability. Due to the superiorities of synthesis and electrochemical performance, the as-prepared MnO2 NWs are promising for applications in electrocatalysis, electrochemical sensor, and supercapacitor.
文章类型Article
关键词Mno2 Nanowires Biotemplate Synthesis Phage Display Electrochemical Glucose Biosensor Neutral Ph
WOS标题词Science & Technology ; Technology
DOI10.1021/acsami.6b03266
关键词[WOS]HYDROGEN-PEROXIDE ; ALPHA-MNO2 NANOTUBES ; BETA-MNO2 NANORODS ; ION BATTERIES ; VIRUS ; SENSOR ; NANOSTRUCTURES ; NANOPARTICLES ; NANOCOMPOSITE ; ELECTRODE
收录类别SCI
语种英语
WOS研究方向Science & Technology - Other Topics ; Materials Science
项目资助者National Natural Science Foundation of China(21275152 ; 21475144)
WOS类目Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号WOS:000377642100013
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/8323
专题生物传感技术团队
作者单位1.Qingdao Univ, Inst Biosensing, Qingdao 266071, Peoples R China
2.Qingdao Univ, Coll Chem & Chem Engn, Qingdao 266071, Peoples R China
3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Lab Biosensing, 189 Songling Rd, Qingdao 266101, Peoples R China
4.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
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Han, Lei,Shao, Changxu,Liang, Bo,et al. Genetically Engineered Phage-Templated MnO2 Nanowires: Synthesis and Their Application in Electrochemical Glucose Biosensor Operated at Neutral pH Condition[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(22):13768-13776.
APA Han, Lei,Shao, Changxu,Liang, Bo,&Liu, Aihua.(2016).Genetically Engineered Phage-Templated MnO2 Nanowires: Synthesis and Their Application in Electrochemical Glucose Biosensor Operated at Neutral pH Condition.ACS APPLIED MATERIALS & INTERFACES,8(22),13768-13776.
MLA Han, Lei,et al."Genetically Engineered Phage-Templated MnO2 Nanowires: Synthesis and Their Application in Electrochemical Glucose Biosensor Operated at Neutral pH Condition".ACS APPLIED MATERIALS & INTERFACES 8.22(2016):13768-13776.
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