Tailoring the morphology of hydroxyapatite particles using a simple solvothermal route |
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| Affiliation: | 1. Institut National des Sciences Appliquées et de Technologies, INSAT, Centre Urbain Nord BP 676 - 1080 Tunis Cedex, Tunisia;2. Laboratory of Physical Chemistry of Mineral Materials and their Applications, National Center of Research in Material Sciences, CNRSM, Technologic Park of Borj-Cedria B.P. 73, 8020 Soliman, Tunisia;3. CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, Portugal;4. Department of Chemistry, Faculty of Sciences Khulais, University of Jeddah, P. O. Box 355, Jeddah 21921, Saudi Arabia;1. Faculty of Material Science and Engineering, University Politehnica of Bucharest, Splaiul Independentei 313, 011061 Bucharest, Romania;2. Research and Development Department, S.C.Nuclear NDT Research & Services S.R.L, Berceni Road 104, District 4, Bucharest, Romania;3. Destructive and Nondestructive Testing Laboratory, S.C.Nuclear NDT Research & Services S.R.L, Berceni Road 104, District 4, Bucharest, Romania;4. Faculty of Applied Chemistry and Material Science, University Politehnica of Bucharest, Gheorghe Polizu 1-7, 011061 Bucharest, Romania;5. School of Aerospace, Transport and Manufacturing, Cranfield University, College Road, Cranfield MK43 0AL, UK;6. Faculty of Dental Medicine, University of Medicine and Pharmacy U.M.F. “Carol Davila”, Calea Plevnei 17-23, 030167 Bucharest, Romania;1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, PR China;2. Graduated School of Chinese Academy of Sciences, Beijing 100039, PR China;1. CENIMAT/I3N, Materials Science Department, Faculty of Sciences and Technology, FCT, NOVA University of Lisbon, 2829-516 Caparica, Portugal;2. CENIMAT/I3N, Physics Department, Faculty of Sciences and Technology, FCT, NOVA University of Lisbon, 2829-516 Caparica, Portugal;1. Department of Chemical Engineering, Dayananda Sagar College of Engineering, Bengaluru 560078, India;2. Department of Bio-medical, INM Technologies Private Limited, Bengaluru 560059, India |
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| Abstract: | Nanometric and sub-micrometric monodispersed hydroxyapatite (HAp) particles with different morphologies (spheres and rods) were synthesized via a simple solvothermal method using Ca(NO3)2·4H2O and P2O5 as starting materials without any requirement to use organic templates. The growth, evolution and purity of the nanoparticles were investigated by controlling the synthesis conditions, including the alkalinity and the temperature of the solvothermal treatment. The increasing of the alkaline ratio results in a great change of the elaborated particles’ morphology that evolved from anisotropic forms (nanorods, sub-micrometric rod) at pH 9, short rod particles at pH 9.5 to spherical ones at higher pH (pH≥10).Powder X-Ray diffractometry (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR) and Nitrogen adsorption and desorption studies (BET) were used to characterize the structure and composition of the as-prepared samples.The thermal analysis of the synthesized particles conducted by differential scanning calorimetry (DSC) shows a good stability for all morphologies with a degradation temperature reaching 1300 °C. |
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| Keywords: | Hydroxyapatite Powders Nanoparticles Solvothermal approach Spherical morphology Rod-like morphologies |
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