Room Temperature Crystallization of Hydroxyapatite in Porous Silicon Structures.
Porous silicon (PS) substrates, with different pore sizes and morphology, have been used to crystallize hydroxyapatite (HA) nano-fibers by an easy and economical procedure using a co-precipitation method at room temperature. In situ formation of HA nanoparticles, within the meso- and macroporous silicon structure, resulted in the formation of nanometer-sized hydroxyapatite crystals on/within the porous structure. The X-ray diffraction technique was used to determine the tetragonal structure of the crystals. Analysis/characterization demonstrates that under certain synthesis conditions, growth and crystallization of hydroxyapatite layer on/inside PS can be achieved at room temperature. Such composite structures expand the possibility of designing a new bio-composite material based on the hydroxyapatite and silicon synthesized at room temperature.
Institute of Physics, UNAM, Circuito de la Investigación Científica Ciudad Universitaria, México, C. P. 04510, México.|Posgrado en Ciencia e Ingeniería de Materiales, Circuito de la Investigación Científica, Ciudad Universitaria, Mexico, 04510, Mexico.
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Santana
Institute of Physics, UNAM, Circuito de la Investigación Científica Ciudad Universitaria, México, C. P. 04510, México. jestevez@fisica.unam.mx.
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JO
Estevez
Center for Engineering and Applied Sciences (CIICAp-UAEM), Av. Universidad 1001. Col. Chamilpa, Cuernavaca, Morelos, 62209, México.
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V
Agarwal
Institute of Physics, UNAM, Circuito de la Investigación Científica Ciudad Universitaria, México, C. P. 04510, México.
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R
Herrera-Becerra
Co-precipitation method; Hydroxyapatite; Porous silicon