Dissertation > Excellent graduate degree dissertation topics show
Fe_3O_4 magnetic nanoparticles - graphene oxide composites Controllable Preparation and Application
Author: Zhang
Tutor: YangZuPei；ZhangZhiJun
School: Shaanxi Normal University
Course: Materials Science
Keywords: Fe3O4 magnetic nanoparticles Graphene oxide Composites Controllable Preparation Characterization Application
CLC: TB383.1
Type: Master's thesis
Year: 2011
Downloads: 812
Quote: 0
Read: Download Dissertation
Abstract
|
Magnetic nanoparticles unique magnetic properties make it widely in many fields of application. Magnetic nanoparticles is a prerequisite for application of the monodisperse particle size and controllable, and has better magnetic response. Carbon material graphene, with its excellent features, in recent years has been rapid development. Magnetic nanoparticles - graphene oxide nanocomposites as a novel nanocomposites, set magnetic nanoparticles and graphene oxide features in one, is expected to be functional materials, chemical and biological fields is widely available. The master's thesis studied the Fe3O4 magnetic nanoparticles - graphene oxide composites are discussed Fe3O4 magnetic nanoparticles graphene oxide surface controlled assembly and preliminary study of the composite material in the removal of tetracycline and other aspects of environmental pollutants Application. Prepared using pyrolysis diameter were 3 nm, 5 nm, 6 nm, 18 nm Fe3O4 magnetic nanoparticles soluble and ligand-exchange chromatography with surface carboxyl and amino modification. The particle size of the magnetic nanoparticles, structure, magnetic properties and the surface electric charge were characterized. The results show that we successfully prepared a higher magnetic response, good monodisperse Fe3O4 magnetic nanoparticles. Surface chemical modification of the magnetic nanoparticles have good aqueous stability. Thesis Chapter 3, by changing the Fe3O4 magnetic nanoparticles Fe304 magnetic nanoparticles - graphene oxide composites loadings, to control the magnetic properties of the composite. The use of polyethylene imine (PEI) chemical crosslinking graphene oxide, to obtain amino graphene oxide (GO-PEI), with different amounts of Fe3O4 magnetic nanoparticles crosslinking reaction to obtain a different load ratio of magnetic nanoparticles - graphene oxide composite material (M-GO). Through the composite morphology, structure, and magnetic characterization, that the composite material has magnetic properties can be regulated. Chapter 4 Research papers by assembling technology, Fe3O4 magnetic nanoparticles - graphene oxide composite Fe3O4 magnetic nanoparticles on the surface of the graphene controlled assembly. The use of polyethylene imine (PEI) may be at higher temperatures the characteristics of graphene oxide reduction, and the amino group carried PEI graphene oxide carried by reaction of the carboxylic acid groups, PEI modified graphene oxide reduction (PEI -rGO). And PEI-rGO with DMSA modified Fe3O4 magnetic nanoparticles in the presence of EDC chemical reaction to achieve the Fe3O4 magnetic nanoparticles assembled orientation graphene oxide, to obtain a composite magnetic graphene oxide (M-rGO). With this magnetic composite material contains a large conjugated system characteristics, a preliminary study of the composite material in the removal of tetracycline and other environmental pollutants and other applications. Research development functionalized graphene oxide magnetic composites method is simple, controllable advantages of the composite material has high superparamagnetic. Magnetic resistance class features expected in graphene composite magnetic targeting drug / gene transport, magnetic resonance angiography, and magnetic-mediated biological separation and removal of environmental pollutants and fields of application.
|
Related Dissertations
- Preparation and Tribological Properties of TZ3Y20A-SrSO4 Ceramic Matrix Composites,TB332
- Reactive Hot-Pressing and Mechanical Properties of （ZrB2-ZrO2）/BN Composites,TB332
- The convergence of mathematics teaching in primary and secondary schools under the new curriculum with the problem representation,G633.6
- Research of PROFIBUS-DP Typical Application System,TP273
- The Research on the Performance Results Application of Zhaoqing Power Supply Bureau,F272.92
- The Practice and Exploration of Compiling Rural Junior Middle School Art Textbooks Base on the Local Resources of Jingmen,G633.955
- A Study on Curriculum Management in Applied Universities,G642.3
- Studies on Synthesis, Characterization and Properties of Fe-V Co-doped TiO2 Catalyst,O614.411
- Study on Proportions and Applications of Concrete with Iron Mine Tailings,TU528
- Signal Acquisition and Processing Platform Design and Implementation of Trawl Sonar System,S951.2
- The Innovation Design and Application Research of Hand Crochet,TS941.2
- Characterization of Corn Lectin and Application to Screen of Growth-promoting Bacteria from Corn Rhizosphere,S513
- The Current Usage and Recommendations of Video Resource in the Excellent-quality-course in University,G642.3
- Health-based and Ecological Risk Assessment of Contaminated Sites,X820.4
- Management System Design and Implementation of troop strength,TP311.52
- Preliminary Research on Characterization of Thermophilic Protease Pasey and Helicase Htc16,Q814
- Cloning and Expression of Xylanase Gene from Thermobifida Halotolerans YIM 90462~T,Q78
- Effect of Nitrogenapplication Patterns on Variation of Soil Nitrate-N and Grain Yield of Wheat and Maize,S512.11
- Isolation and Characterization of Carbendazim-Degrading Strains, Cloning and Expression of the mheI Gene,X172
- Characterization of an Atrazine-Degrading Strain, Cloning of Key Degrading Related Genes and Construction of a Gene Cluster,X172
- Study on the Characteristics of Endoproteases and Changes of Main Nitrogenous Components during Brown Rice Germination,TS210.1
CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials
© 2012 www.DissertationTopic.Net Mobile
|