| Magnetic carbon nanotubes (Fe3O4/CNTs) and graphene-ZnS nanocomposites were constructed on the basis of one dimensional nanomaterials (CNTs) and two dimensional nanomaterials (GO). These refreshing nanocomposites with high surface area, outstanding conductivity and other excellent properties from their special structure, have made a large impact in the fields of nanoelectronics, drug delivery, and so on. Based on boost the application of the nanocomposites in the biomedical field, we prepared the functional magnetic carbon nanotubes with good biocompatibility and visual performance. We designed the synthesis of graphene-ZnS nanocomposites. The purpose of this thesis includes the following main parts:A kind of biomimetic amphoteric polymer, phosphatidylcholine (PC), was used to produce water soluble and biocompatible Fe3O4/CNTs during the solvothermal method. Fe3O4/CNTs were facilely dispersed in aqueous media by ultrasonication with the help of PC, with the long hydrophobic segment and the hydrophilic group as controls. The biological properties of the PC modified Fe3O4/CNTs (Fe3O4/CNTs-PC) were evaluated using adsorption capacity of BSA (ACB) and plasma recalcification time (PRT).We present a novel method to fluorescently label magnetic carbon nanotubes by combining a non-ionic surfactant Tween-20and a fluorescein isothiocyanate (FITC) commonly used in biological experiments. The samples were characterized using TEM, XRD, VSM and FL,Graphite oxide (GO) or functional graphite oxide (f-GO) was used as starting material, a non-ionic surfactant Tween-20was adopted as disperse agent of GO as well as growth template in the nucleation process of ZnS nanoparticles. Thioacetamide (TAA) as a sulfide source as well as a reducing agent, in site formation of ZnS nanoparticles supported on GO nanosheets uniformly and simultaneous reduction of GO to graphene effectively. As-made G-ZnS was characterizated by means of TEM, XRD and FT-IR. |
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