Synthesis and Characterization of Pure Natural Hydroxyapatite from Fish Bones Bio-Waste

2012 ◽  
Vol 506 ◽  
pp. 206-209 ◽  
Author(s):  
R. Bunsiri ◽  
Kheamrutai Thamaphat ◽  
Pichet Limsuwan
Keyword(s):  
Electron Microscopy ◽  
Oreochromis Niloticus ◽  
Synthesis And Characterization ◽  
Qualitative Comparison ◽  
Fish Bones ◽  
Dsc Analyses ◽  
Heating Up ◽  
Natural Hydroxyapatite ◽  
Scanning Electron

The objective of the present study was the qualitative comparison of hydroxyapatite (HAP) extracted from bio waste by different methods. Fish bones obtained from mango fish (Oreochromis niloticus) were used as natural source for HAP synthesis. Three different processes were applied to extract the natural HAP: annealing at 400-1000 °C (F400-F1000), H2O2cleaning and NaOH cleaning. A combination of TGA/DSC analyses, XRD spectrometry, FTIR spectroscopy and scanning electron microscopy were utilized for characterization. They indicated that all methods have the ability to eliminate the organic compounds present in the fish bones. However, annealing of the bone sample was found to be more efficient approach in reducing the amount of organic phase; only inorganic phase was remained in F600, F800 and F1000. For the HAP crystallinity, treatment with H2O2, NaOH, and heating up to 400 °C did not create notable changes of HAP original crystallinity. On the contrary, HAP crystallinity was increased slowly from 400 to 600 °C, outstandingly from 600 to 800 °C and remained almost constant from 800 to 1000 °C.

Hydrothermal Synthesis and Characterization of BiFeO3 Polyhedral Crystallites

2012 ◽  
Vol 174-177 ◽  
pp. 508-511
Author(s):  
Lin Lin Yang ◽  
Yong Gang Wang ◽  
Yu Jiang Wang ◽  
Xiao Feng Wang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

BiFeO3 polyhedrons had been successfully synthesized via a hydrothermal method. The as-prepared products were characterized by power X-ray diffraction (XRD) pattern, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The possible mechanisms for the formation of BiFeO3 polyhedrons were discussed. Though comparison experiments, it was found that the kind of precursor played a key role on the morphology control of BiFeO3 crystals.

scholarly journals Synthesis and characterization of apatite silicated powders with wet precipitation method

2021 ◽  
Vol 234 ◽  
pp. 00106
Author(s):  
Houda Labjar ◽  
Hassan Chaair
Keyword(s):  
Electron Microscopy ◽  
Heat Treatment ◽  
Analytical Techniques ◽  
Precipitation Method ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Wet Precipitation ◽  
Scanning Electron

The synthesis of apatite silicated Ca10(PO4)6-x(SiO4)x(OH)2-x (SiHA) with 0≤x≤2 was investigated using a wet precipitation method followed by heat treatment using calcium carbonate CaCO3 and phosphoric acid H3PO4 and silicon tetraacetate SiC8H20O4 (TEOS) in medium of water ethanol, with three different silicate concentrations. After drying, the samples are ground and then characterized by different analytical techniques like X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning electron Microscopy (SEM) and chemical analysis.

Synthesis and characterization of homogeneous lead-substituted tin oxide with the (110) face of rutile structure

2000 ◽  
Vol 15 (10) ◽  
pp. 2076-2079
Author(s):  
Chika Nozaki ◽  
Takashi Yamada ◽  
Kenji Tabata ◽  
Eiji Suzuki
Keyword(s):  
Electron Microscopy ◽  
Tin Oxide ◽  
Photoelectron Spectroscopy ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Rutile Structure ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

Synthesis of a rutile-type lead-substituted tin oxide with (110) face was investigated. The characterization was performed by x-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive x-ray spectroscopy, infrared spectroscopy, x-ray photoelectron spectroscopy, and Brunauer–Emmett–Teller surface area measurements. The homogeneous rutile-type lead-substituted tin oxide was obtained until 4.1 mol% of tin was substituted with lead. The surface of obtained oxide had a homogeneously lead-substituted (110) face.

Synthesis and Characterization of Gold Nanoparticles Synthesized in Gel and Paper by Electrolysis

2019 ◽  
Vol 824 ◽  
pp. 163-167
Author(s):  
Pema Dechen ◽  
Ekasith Somsook
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Gold Nanoparticles ◽  
Room Temperature ◽  
Synthesis And Characterization ◽  
Visible Spectroscopy ◽  
Gold Leaf ◽  
Uv Visible ◽  
Scanning Electron

In this report, synthesis and characterization of gold nanoparticles (AuNPs) from gold leaf by electrolysis in two different media (gel and paper) in presence of sodium chloride (NaCl), glucose (C6H12O6) and polyvinyl pyrrolidone (PVP) at room temperature were investigated. Graphite was used as two electrodes, NaCl was used as an electrolyte, C6H12O6 was used as reducing agent and PVP was used as stabilizer to control the aggregation of the nanoparticles. UV-Visible spectroscopy (UV-Vis) and scanning electron microscopy (SEM) were used to confirm the characteristics and morphologies of the synthesized AuNPs.

Synthesis and Characterization of Novel AlF3 Cubes

NANO ◽  
2015 ◽  
Vol 10 (05) ◽  
pp. 1550071 ◽  
Author(s):  
Maoquan Xue ◽  
Changsheng Li
Keyword(s):  
Electron Microscopy ◽  
Synthesis And Characterization ◽  
Metal Fluoride ◽  
Controlled Synthesis ◽  
X Ray ◽  
Transmission Electron ◽  
Cubic Structure ◽  
Synthesis Approach ◽  
Scanning Electron

In this paper, regularly shaped AlF 3 particles with cubic structure were successfully synthesized via a solvothermal route. The as-prepared products were characterized by X-ray powder diffraction (XRD), energy-dispersive spectroscopy (EDS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The experimental results indicated that reaction temperature and time have significant effects on the morphology of the as-prepared products. A possible formation process has also been investigated on the basis of a series of XRD and SEM studies of the product obtained at different conditions. This well-controlled synthesis approach may be extended to fabricate other metal fluoride materials.

Synthesis and Characterization of Al2O3 by Using a Combustion Synthesis Method

2012 ◽  
Vol 545 ◽  
pp. 169-171 ◽  
Author(s):  
Mawar Hazwani Jasimin ◽  
Nurhanna Badar ◽  
Rusdi Roshidah ◽  
Norlida Kamarulzaman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Metal Oxides ◽  
Annealing Temperature ◽  
Synthesis Method ◽  
Combustion Method ◽  
Synthesis And Characterization ◽  
Size And Morphology ◽  
Scanning Electron

Aluminium oxide is one of the metal oxides that can exist in many phases such as α, θ, η etc. All the phases obtained are affected by annealing temperature and synthesis route. In this research the Al2O3 powders were synthesized by the combustion method using triethanolamine as fuels. A pure η phase as well as a mixed α and η phases were obtained. The size and morphology of Al2O3 particles were studied using scanning electron microscopy (SEM).

Synthesis and Characterization of Star-Like Copper Oxide (CuO) with Submicrometer Sizes

2012 ◽  
Vol 465 ◽  
pp. 186-191
Author(s):  
Shou Long Gong ◽  
Fang Lin Du
Keyword(s):  
Electron Microscopy ◽  
Synthesis And Characterization ◽  
Simple Liquid ◽  
Liquid Phase Deposition ◽  
Monoclinic Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

Star-like CuO with submicrometer sizes was fabricated via a simple liquid-phase deposition with the assistant of PVP and Na2MoO4. The as-prepared CuO have been characterized by X-ray diffraction(XRD) and scanning electron microscopy (SEM). The results showed that the as-prepared CuO owned monoclinic structure, the concentrations of PVP, Na2MoO4 and NaOH are very important to the morphology of CuO. The quality of PVP impacts the formation of thin flakes on the skeletons. Meanwhile, the growth of dendritic skeletons was depended on the addition of Na2MoO4, and the effect of NaOH is to control the dimension of CuO structure.

Sol-Gel Synthesis and Characterization of BiFeO3-PbTiO3 Thin Films

2007 ◽  
Vol 997 ◽  
Author(s):  
Ashish Garg ◽  
Soumya Kar ◽  
Anju Dixit ◽  
D C Agrawal
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Scanning Electron Microscopy ◽  
Sol Gel ◽  
Grazing Incidence ◽  
Synthesis And Characterization ◽  
Sol Gel Synthesis ◽  
Polycrystalline Form ◽  
Scanning Electron

AbstractIn this work, we report on the synthesis and characterization of thin films of (BiFeO3)1−x (PbTiO3)x (BFPT) solid solutions of compositions around morphotropic phase boundary (MPB) grown on platinized silicon (111) Pt/TiO2/SiO2/Si substrate by sol-gel based spin coating technique. The films were post-annealed at 700 and 750°C for 1 h in air. Morphological analysis of the films was carried out by scanning electron microscopy. Grazing incidence X-ray diffractometry revealed the perovskite structure of the films and peaks suggested the presence of rhombohedral structured pure BFPT phase in polycrystalline form. Scanning electron microscopy suggested that films annealed at 750degC had a denser microstructure as compared to those at 700°C. The room temperature dielectric constant of the films with composition of BF:PT :: 75:25 was measured to be ∼1200 at a frequency of 100 kHz.

Darstellung und Charakterisierung des Silber(I,II,III)-oxidclathrates Ag7O8HCO3 / Synthesis and Characterization of the Silver(I,II,III) Oxide Clathrate Ag7O8HCO3

2000 ◽  
Vol 55 (9) ◽  
pp. 882-886 ◽  
Author(s):  
Martin Jansen ◽  
Sascha Vensky
Keyword(s):  
Electron Microscopy ◽  
Thermal Analysis ◽  
Scanning Electron Microscopy ◽  
Magnetic Susceptibility ◽  
Solid State Nmr ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

The silver(I,II,III) oxide clathrate Ag7O8HCO3 was synthesized by anodic oxidation of silver(I) in a suspension of Ag2CO3 in an aqueous AgF solution. The title compound was characterized by single crystal X-ray diffraction (cubic, Fm3̄m, a = 9.8085(3) Å, Z = 4), scanning electron microscopy, thermal analysis, IR spectroscopy, 1H-solid state-NMR and measurement of the magnetic susceptibility

Synthesis and Characterization of Nanostructured TiO2-SnO2 Composite

2014 ◽  
Vol 975 ◽  
pp. 233-237
Author(s):  
Joelma C. S. Breve ◽  
Dayse I. dos Santos
Keyword(s):  
Electron Microscopy ◽  
Heat Treatment ◽  
Thermal Analysis ◽  
Gas Sensors ◽  
Catalytic Properties ◽  
Rutile Phase ◽  
Synthesis And Characterization ◽  
Vis Spectroscopy ◽  
Scanning Electron

Nanostructured composites based on titanium dioxide have been studied in order to improve optical and photo-catalytic properties, as well as their performance in gas sensors. In this work, titanium and tin dioxides were simultaneously synthesized by the polyol method resulting in TiO2 platelet coated with SnO2 nanoparticles as was observed by scanning electron microscopy. The thermal analysis showed that the combined synthesis promotes more easily the crystallization of the TiO2 rutile phase. The composite obtained after heat treatment at 500 °C showed to be formed of almost only rutile phases of both oxides. The optical properties analyzed by UV-Vis spectroscopy showed that the combined oxides have higher absorbance, which reinforces a model found in the literature based on the flow of photo-generated electrons to the conduction band of SnO2 delaying the recombination of charges.

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