Microwave assisted solution combustion synthesis of β-tricalcium phosphate nano-powders

A new approach for synthesis of β-tricalcium phosphate (β-TCP) was investigated by microwave-assisted combustion method. Three different fuels, glycine, urea and citric acid were used and their effects on the β-TCP powders formation were investigated. The morphology of powders, chemical and phase constituent were determined by SEM, FTIR and XRD, respectively. The results indicated that β-TCP powders with high purity could be obtained when citric acid is used as fuel; and in case of glycine and urea small amounts of hydroxyapatite (HA), calcium pyrophosphate and calcium hydrogen phosphate were detected by XRD. The morphology of β-TCP particles was found to be depended on fuel type. More uniform particle size with higher β-TCP purity was obtained by citric acid as fuel. Resumen: Se investigó un nuevo método para la síntesis del fosfato β-tricálcico (β-TCP) mediante el método de combustión asistida por microondas. Se utilizaron tres combustibles diferentes, glicina, urea y ácido cítrico, y se investigaron sus efectos sobre la formación de polvos de β-TCP. El componente químico y de fase, la morfología de los polvos fueron determinados por FTIR, XRD y SEM, respectivamente. Los resultados mostraron que se pueden obtener polvos de β-TCP de alta pureza cuando se usa ácido cítrico como combustible, y en el caso de glicina y urea se detectaron pequeñas cantidades de hidroxiapatita (HA), pirofosfato de calcio y fosfato de calcio por XRD. Se encontró que la morfología de las partículas de β-TCP dependía del tipo de combustible. El tamaño de partícula más uniforme con mayor pureza de β-TCP se obtuvo usando ácido cítrico como combustible. Keywords: β-Tricalcium phosphate, Combustion method, Fuel, Morphology, Palabras clave: β-Fosfato tricálcico, Método de combustión, Combustible, Morfología

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