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Shape Control of Electrospun 1D metal oxide/carbon Nanomaterials by Adjusting Precursor and Their Sensor Applications : 전기 방사의 전구체 조절을 통한 일차원 금속산화물/탄소 나노 소재의 표면 형상 제어방법과 이의 센서로의 응용

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dc.contributor.advisor장정식-
dc.contributor.author전재문-
dc.date.accessioned2018-05-28T16:31:51Z-
dc.date.available2018-05-28T16:31:51Z-
dc.date.issued2018-02-
dc.identifier.other000000150390-
dc.identifier.urihttps://hdl.handle.net/10371/140767-
dc.description학위논문 (박사)-- 서울대학교 대학원 : 공과대학 화학생물공학부, 2018. 2. 장정식.-
dc.description.abstractDue to the structural properties such as high aspect ratio and specific surface area, one-dimensional (1D) nanomaterials have been studied variously for improving the physical properties through constitution and structural molding. Electrospinning is one of the methods for manufacturing 1D nanomaterials using viscous polymer solution. It is advantageous that application fields are greatly expanded because manufacturing is relatively simple from organic materials to inorganic materials by changing spinning conditions. However, there is still lack of research on manufacturing methods for forming a precise 1D structure through the spinning conditions of electrospinng, and methods for manufacturing 1D organic/inorganic composite nanomaterial by deepening it.
This dissertation proposes a method to control the structure shape and composition of the final 1D nanomaterials by applying a mixed polymer solution, solvent and metal oxide precursor to electrospinning. In order to improve the performance, a method of fabricating 1D organic/iorganic composite nanomaterials by coating a conducting polymer, polypyrrole (PPy) on the surface of 1D nanomaterials was proposed and applied to various sensor fields.
Fistlty, polymer solution containing poly(methyl methacrylate) (PMMA), poly(acrylonitrile) (PAN) and cobalt acetate was applied to electrospinning to prepare phase separated nanofibers. Using this method, cobalt oxide nanopartilces (NPs) embedded multichannel carbon nanofibers (C_MCNFs) was fabricated and applied as a glucose sensor electrode material.
Secondly, the method of controlling shape of 1D nanomaterial by mixing two solvents and finally fabricating a complex tube structure for high performance DMMP gas sensor was demonstrated.
Third, to fabricate a metal oxide NPs decorated ultrathin CNF (ZCNF), a polymer solution with a mixture of poly (vinlypyrrolidone) (PVP), PAN and zinc acetate was applied to electrospinng. By using the ZCNF as a sensor electrode, we realized a platelet derived growth factor biosensor with a high sensitivity and fast response time		-
dc.description.tableofcontents1. Introduction 1
1.1 Background 1
1.1.1 One-dimensional nanomaterials 1
1.1.1.1 Nanofiber 2
1.1.1.2 Nanotubes 3
1.1.2 Electrospinning method 4
1.1.2.1 Electrospun 1D carbon nanomaterial 8
1.1.2.2 Electrospun 1D metaloxide nanomaterial 9
1.1.2.2.1 Tin dioxide 11
1.1.2.2.2 Cobaltic oxide 11
1.1.2.3 Composite nanomaterial 12
1.1.3 Polypyrrole 13
1.1.4 Sensor applications 19
1.1.4.1 Chemical Sensor 21
1.1.4.1.1 DMMP gas sensor 24
1.1.4.2 Bio sensor 26
1.1.4.2.2 Glucose sensor 28
1.1.4.2.2 Platelet-derived growth factor (PDGF) sensor 29
1.2 Objectives and Outlines 31
1.2.1 Objectives 31
1.2.2 Outlines 32
2. Experimental Details 34
2.1 Fabrication of a One-dimensional cobalt oxide NPs embedded multichannel carbon nanofibers for glucose sensor 34
2.1.1 Materials 34
2.1.2 Fabrication of MCNFs 34
2.1.3 Fabrication of C_MCNFs 35
2.1.4 Electrochemical measurement 35
2.1.5 Characterization 36
2.2 Fabrication of a One-dimensional Tube-in-tube Polypyrrole/Tin oxide Structure for Highly Sensitive DMMP Sensor Applications 37
2.2.1 Materials 37
2.2.2 Fabrication of the tube-in-tube SnO2 37
2.2.3 Fabrication of the PPy@SnO2 tube-in-tube structure 38
2.2.4 Characterization of the PPy@SnO2 tube-in-tube structure 38
2.2.5 Electrical sensitivity measurements of the tube-in-tube PPy@SnO2 39
2.3 Fabrication of One-dimensional nano-nodule decorated Carbon Nanofiber for a Highly Sensitive and Selective Platelet-Derived Growth Factor Biosensor 40
2.3.1 Materials 40
2.3.2 Fabrication of MCNFs 40
2.3.3 Fabrication of CPMCNFs 41
2.3.4 Fabrication of the CPB-Apt FET sensor 42
2.3.5 Characterization 42
2.3.6 Electrical measurements with the CPB-Apt sensor 43
3. Results and Disccusions 44
3.1 Fabrication of a One-dimensional cobalt oxide NPs embedded multichannel carbon nanofibers for glucose sensor 44
3.1.1 Fabrication of Materials 44
3.1.1.1 Fabrication of MCNFs 44
3.1.1.2 Fabrication of C-MCNFs 50
3.1.2 Characterization 53
3.1.2.1 Characterization of MCNFs 53
3.1.2.2 Characterization of C-MCNFs 59
3.1.2.3 Electrochemical sensing performance 71
3.2 Fabrication of a One-dimensional Tube-in-tube Polypyrrole/Tin oxide Structure for Highly Sensitive DMMP Sensor Applications 76
3.2.1 Fabrication of the materials 76
3.2.2 Characterizations 82
3.2.3 Electrical sensor measurements 93
3.3 Fabrication of One-dimensional nano-nodule decorated Carbon Nanofiber for a Highly Sensitive and Selective Platelet-Derived Growth Factor Biosensor 108
3.3.1 Fabrication of CPMCNFs 108
3.3.2 Fabrication of the CPB-Apt FET sensor 115
3.3.3 Real-time responses of the CPB-Apt FET sensor 120
4. Conclusion 129
Reference 132
국문초록 140		-
dc.formatapplication/pdf-
dc.format.extent6334275 bytes-
dc.format.mediumapplication/pdf-
dc.language.isoen-
dc.publisher서울대학교 대학원-
dc.subjectelectrospinning-
dc.subjectone-dimensional nanomaterials-
dc.subjectcarbon nanofiber-
dc.subjectmetal oxide-
dc.subjectpolypyrrole-
dc.subjectsensor-
dc.subject.ddc660.6-
dc.titleShape Control of Electrospun 1D metal oxide/carbon Nanomaterials by Adjusting Precursor and Their Sensor Applications-
dc.title.alternative전기 방사의 전구체 조절을 통한 일차원 금속산화물/탄소 나노 소재의 표면 형상 제어방법과 이의 센서로의 응용-
dc.typeThesis-
dc.description.degreeDoctor-
dc.contributor.affiliation공과대학 화학생물공학부-
dc.date.awarded2018-02-
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