Preparation of Rod-like Aluminum Doped Zinc Oxide Powders by Sol-gel Technique Using Metal Chlorides and Acetylacetone Precursors  

作　　者：KESHTKAR Javad VARGAS GARCIA Jorge Roberto GALAVIZ PEREZ Jorge MARTINEZ TRINIDAD José 

机构地区：[1]Escuela Superior de Ingenieria Mecánica y Eléctrica,Instituto Politécnico Nacional,México,07738,CDMX,México [2]Escuela Superior de Ingenieria Quimica e Industrias Extractivas,Instituto Politécnico Nacional,México,07738,CDMX,México [3]Universidad Juárez Autònoma de Tabasco,Divisiòn,Académica Multidisciplinaria de Jalpa de Méndez,Ribera Alta,Jalpa de Méndez,Tabasco,86205,México

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2018年第6期1293-1297,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Project of Instituto Politecnico Nacional(SIPIPN-20182176)

摘　　要：Al-doped ZnO(AZO) powders were prepared by using metal chloride precursors and the sol-gel technique. IR peaks observed at 1590 cm-1 and 1620 cm-1indicated the formation of metal chelate as a consequence of the addition of acetylacetone to the metal chloride solution. TG-DSC analysis of the AZO gels confirmed the formation of metal chelate as evidenced by the development of several weight loss peaks accompanied by the introduction of new endothermic peaks. The resulting AZO gels were annealed at 500, 600, and 800 ℃ to study the effect of annealing temperature. XRD and SEM results showed that crystallization of AZO gels takes place around 600 ℃. Hexagonal wurtzite structure was identified as the main phase for all the samples. In addition, small shift of the XRD(002) peak coupled with XPS results from the AZO powders confirmed the successful doping of the ZnO powders. Micron sized rod-like AZO powders were uniform in dimension and morphology and remained stable even at 800 ℃.Al-doped ZnO(AZO) powders were prepared by using metal chloride precursors and the sol-gel technique. IR peaks observed at 1590 cm-1 and 1620 cm^(-1) indicated the formation of metal chelate as a consequence of the addition of acetylacetone to the metal chloride solution. TG-DSC analysis of the AZO gels confirmed the formation of metal chelate as evidenced by the development of several weight loss peaks accompanied by the introduction of new endothermic peaks. The resulting AZO gels were annealed at 500, 600, and 800 ℃ to study the effect of annealing temperature. XRD and SEM results showed that crystallization of AZO gels takes place around 600 ℃. Hexagonal wurtzite structure was identified as the main phase for all the samples. In addition, small shift of the XRD(002) peak coupled with XPS results from the AZO powders confirmed the successful doping of the ZnO powders. Micron sized rod-like AZO powders were uniform in dimension and morphology and remained stable even at 800 ℃.

关 键 词：aluminum doped ZnO ROD-LIKE metal chloride sol gel ACETYLACETONE 

分 类 号：TB[一般工业技术]