Metal and polymer-mediated synthesis of porous crystalline hydroxyapatite nanocomposites for environmental remediation

作者: Danushika C. Manatunga , Rohini M. de Silva , K. M. Nalin de Silva , Nuwan de Silva , E. V. A. Premalal

DOI: 10.1098/RSOS.171557

关键词:

摘要: This study was focused on the preparation of metal and polymer-mediated porous crystalline hydroxyapatite (HAp) nanocomposites for environmental applications. Four different nano HAp systems were synthesized, namely, microwave irradiated (M1), Zn doped (M2), Mg-doped (M3) sodium alginate incorporated (M4), characterized using X-ray diffraction (XRD), Fourier transform infra-red spectroscopy, scanning electron microscopy, transmission atomic force nuclear magnetic resonance (NMR), fluorescence, thermogravimetric analysis Brunauer–Emmett–Teller (BET) analyses. Systems M1–M4 showed morphologies similar to coral shapes, polymer-like interconnected structures, sponges feathery mycelium assemblies. Using XRD, selected area patterns 1 H 31 P CP/MAS solid-state NMR studies, crystallinity variation observed from highest lowest in order M4 > M1 > M3 > M2. Surface estimates BET isotherm reflected surface M3, M1 > M2 > M4. used as potential adsorbent materials removal containing azo dye aqueous system. Adsorption data correlated Freundlich Langmuir models. According results, capacity 212.8 mg g −1 exhibited by M4 having like morphology with groups. highlights possibility developing effective contaminants environment.

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