Abstract
Pure nano Ferro fluid was synthesized by chemical co-precipitation method. The composite of polyaniline with nano sized Ferro fluid was prepared by In-situ–chemical oxidation polymerization method with ammonium per sulphate as an oxidant in aqueous hydrochloric acid under constant stirring at room temperature. The optical properties, absorption, transmission, optical energy gap (Eg) and optical constant refractive index (n) have been investigated. The value of the Eg decreased with increasing Ferro fluid concentration.
Highlights
In recent years the manufacture of devices using inorganic/organic hybrid materials has attracted much interest from both the scientific and the technological points of view, improvements in the electronic and the optical properties of these devices are closely related to surface effects
Raw materials The raw material used to prepare the samples were: aniline hydrochloride(C6H5 NH2.HCl) as a monomer, supplied by Hopkin and Williams company and purity 99 .999%, Ammonium persulphate (NH4)2S2O4 supplied by BDH company and purity 99.95%, Ferric chloride FeCl3 and Ferrs chloride FeCl2 supplied by Central Drug House CDH, and they have purity 95%, Amonia NH3 supplied by BDH company and purity 99.5%,Olic acid C17H33COOH supplied by Hopkin & William LTD and purity 99% Dimethyl sulfoxide (CH3)2SO supplied by CDH- India and purity 99.96%
Tauc [11] put the empirical equation between the optical energy gap and energy of incident photon which is αhυ = A hυ − Eg r where A is a constant, hυ is the energy of incident photon, which can be calculated using the equation hυ = 1240 λ(nm), and r is the order of the optical transition depending on the nature of electronic transition
Summary
In recent years the manufacture of devices using inorganic/organic hybrid materials has attracted much interest from both the scientific and the technological points of view, improvements in the electronic and the optical properties of these devices are closely related to surface effects. Incorporation of a magnetic material, such as Fe3O4, into an organic material has attracted great attention due to the resulting electrical properties as well as the. Polyaniline (PANI) as the organic material has attracted much attention due to its characteristics, such as air stability and good solubility in several solvents, besides it shows several changes in its electronic structure depending on its oxidation level. PANI is widely used in the area of electrochemical materials Experimental work This part presents raw materials and preparation method used to prepare polyaniline /Ferro fluid nano composites. Raw materials The raw material used to prepare the samples were: aniline hydrochloride(C6H5 NH2.HCl) as a monomer, supplied by Hopkin and Williams company and purity 99 .999%, Ammonium persulphate (NH4)2S2O4 supplied by BDH company and purity 99.95%, Ferric chloride FeCl3 and Ferrs chloride FeCl2 supplied by Central Drug House CDH, and they have purity 95%, Amonia NH3 supplied by BDH company and purity 99.5%,Olic acid C17H33COOH supplied by Hopkin & William LTD and purity 99% Dimethyl sulfoxide (CH3)2SO supplied by CDH- India and purity 99.96%
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