| Nano biomedical technology involved in research content of various fields such as biology,medicine and chemical biology,is a kind of comprehensive high and new technology involved in the field of biology,physics and chemistry.In recent years,nano biomedical technology has made remarkable achievements,the nano biomedical technology become the most concerned on nano science and technology,and the one of the most influential and biomedical technology.In particular,the use of magnetic nanomaterials hyperthermia,cancer treatment,and applied to the tumor diagnosis.It have attracted the attention to the researchers,and the research results were widely accepted.Fe3O4 is the only nano material that was approved by the U.S.food and drug administration（FDA）for clinical trials,was highly concerned by researchers.This paper developed a method of FeOOH nanorods direct solvent thermal reduction preparation Fe3O4 nanorods:first of all,with FeCl3·6H2O as precursor prepare for length of 20-500 nm FeOOH nanorods,with low boiling point solvent cleaning and dry,as Fe3O4 nanorods precursor;Then the powder FeOOH nanorods were added to the solvent of Tri-n-octylamine and the high temperature was reduced to the Fe3O4nanorods that was prepared for different lengths.Finally,surface modification to increase the hydrophilicity of the Fe3O4 nanorods.With transmission electron microscopy（TEM）,scanning electron microscopes（SEM）,X-ray photoelectron spectroscopy（XPS）,X-ray diffraction spectrometer（XRD）process characterization of Fe3O4 hydrophilic performance,the use of magnetic thermal equipment test Specific Absorption Ratio（SAR）.The main innovation of this paper are the following:the one,through the adjustment and control of the process parameters,the monodisperse Fe3O4 nanorods is prepared for 20 to 500 nm.Research on its properties had been characterized,found that the different length of diameter ratio of Fe3O4 nanorods kept good single crystal properties,surface modification,using surfaced oxidation nanorods with good hydrophilicity after surface modification.The second,the contrast research of length of diameter ratio 1:1,1:4.5,and 1:10 of nanoparticles hyperthermia,found that magnetic thermal properties of nanomaterials mainly depends on the size and morphology of nanoparticles,but the SAR values of spherical nanoparticles are less than the SAR value of Fe3O4 nanorods. |
