Materials 2009, 2(4), 1508-1519; doi:10.3390/ma2041508
Article

Hydroxyapatite/MCM-41 and SBA-15 Nano-Composites: Preparation, Characterization and Applications

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Received: 29 July 2009; in revised form: 28 September 2009 / Accepted: 29 September 2009 / Published: 30 September 2009
(This article belongs to the Special Issue Composite Materials)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Composites of hydroxyapatite (HaP) and highly ordered large pore mesoporous silica molecular sieves such as, Al-SBA-15 and Al-MCM-41 (denoted as SBA-15 and MCM-41. respectively) were developed, characterized by XRD, BET, FTIR, HRTEM and NMR-MAS, and applied to fluoride retention from contaminated water. The proposed procedure by a new route to prepare the HaP/SBA-15 and HaP/MCM-41, composites generates materials with aluminum only in tetrahedral coordination, according to the 27Al NMR-MAS results. Free OH- groups of HaP nanocrystals, within the hosts, allowed high capacity fluoride retention. The activity of fluoride retention using HaP/MCM-41 or HaP/SBA-15 was 1-2 orders of magnitude greater, respectively, than with pure HaP.
Keywords: HaP/ MCM-41; HaP/ SBA-15; nanocomposites; F- retention; water
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MDPI and ACS Style

Anunziata, O.A.; Martínez, M.L.; Beltramone, A.R. Hydroxyapatite/MCM-41 and SBA-15 Nano-Composites: Preparation, Characterization and Applications. Materials 2009, 2, 1508-1519.

AMA Style

Anunziata OA, Martínez ML, Beltramone AR. Hydroxyapatite/MCM-41 and SBA-15 Nano-Composites: Preparation, Characterization and Applications. Materials. 2009; 2(4):1508-1519.

Chicago/Turabian Style

Anunziata, Oscar A.; Martínez, Maria L.; Beltramone, Andrea R. 2009. "Hydroxyapatite/MCM-41 and SBA-15 Nano-Composites: Preparation, Characterization and Applications." Materials 2, no. 4: 1508-1519.

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