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Preparation and Characterization of Iron Oxide and Copper Powder Ultra-Fine Particles

Author: JiangXiongHua
Tutor: LiChengHai
School: Guangxi University
Course: Applied Chemistry
Keywords: ultra-fine particle α-iron oxide copper powder orthogonal design and uniform design preparation homogenous precipitation chemical method supersonic examination
CLC: O614.811
Type: Master's thesis
Year: 2006
Downloads: 187
Quote: 2
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Abstract


The preparation of a- iron oxide and copper powder ultra-fine particles are studied in this dissertation. XRD, TGA-DTA, FT-IR,SEM,TEM are used to identity the products and there are three methods in preparing α-iron oxide and copper powder ultra-fine particles: homogenous precipitation , supersonic solid phase reaction and chemical deoxidization method. Through exploring respectively the reaction conditions by Orthogonal Design and Uniform Design , the optimal condition is established.The optimal reaction condition of prepareing α-FeOOH ultra-fine particles by homogenous precipitation method is like the following: the system of 1.0mol·dm-3 FeSO4 and CO（NH2）2 （1:3-1:4） undergoes reaction with surfactant SDBS（0.2%） at pH 4-8 and Temp 80℃ for 2h. In the reaction , 120 min is enough for the aeration of O2.The results show that the homogenous spindle type particles are α-FeOOH with the average major axial diameter of 200— 300nm.The supersonic solid phase reaction method is as follows: the system of FeCl3-6H2O and NaOH（1:3） undergoes reaction with surfactant PVA （2%-3%） and the precipitate is washed by supersonic water for 15min.Grinding the reactants for 60-120min is enough. Add some surfactant B in the first product

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CLC: > Mathematical sciences and chemical > Chemistry > Inorganic Chemistry > Metal elements and their compounds > First Ⅷ group metal elements and their compounds > Iron metal element > Iron Fe
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