title: Role of triton X-100 and hydrothermal treatment on the morphological features of nanoporous hydroxyapatite nanorods.
abstract: Hydroxyapatite (HA) particles were synthesized using Ca(NO3)2·4H2O and (NH4)2HPO4 as precursors with varying contents of non-ionic surfactant viz., triton X-100 (organic modifier) via co-precipitation method followed by hydrothermal treatment. The prepared HA particles have been characterized by X-ray diffraction (XRD), Fourier Transform Infrared spectroscopy (FT-IR), Energy Dispersive X-ray Analysis (EDX), High Resolution Scanning Electron Microscopy (HRSEM), High Resolution Transmission Electron Microscopy (HRTEM) and Nitrogen adsorption-desorption experiments. The XRD and FTIR studies indicate the formation of HA phase in all the synthesized samples. The specific roles of triton X-100 and hydrothermal treatment in dispersing and in directing the crystal growth respectively have been discussed by comparing the observations from individual experiments using triton X-100 and hydrothermal treatment with that of combined protocol involving both. The plausible mechanism for the individual roles of both triton X-100 and hydrothermal treatment have been proposed.
authors.affiliation: Department of Chemistry, Madras Christian College (Autonomous), Tambaram East, Chennai - 600 059, Tamil Nadu, India.
authors.forename: E
authors.initials: E
authors.lastname: Iyyappan
authors.affiliation: Department of Chemistry, Madras Christian College (Autonomous), Tambaram East, Chennai - 600 059, Tamil Nadu, India. Electronic address: catwils@gmail.com.
authors.forename: P
authors.initials: P
authors.lastname: Wilson
authors.affiliation: Department of Chemistry, Madras Christian College (Autonomous), Tambaram East, Chennai - 600 059, Tamil Nadu, India.
authors.forename: K
authors.initials: K
authors.lastname: Sheela
authors.affiliation: Department of Chemistry, Madras Christian College (Autonomous), Tambaram East, Chennai - 600 059, Tamil Nadu, India.
authors.forename: R
authors.initials: R
authors.lastname: Ramya
mesh_terms: D003460:Crystallization; D017886:Durapatite / Q000737:chemistry*; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D058608:Nanopores / Q000648:ultrastructure; D043942:Nanotubes / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D017830:Octoxynol / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D017830:Octoxynol; D017886:Durapatite; D009584:Nitrogen
keywords: Hydrothermal treatment; Hydroxyapatite; Mesoporous; Nanorods; Oriented attachment; Triton X-100