scholarly journals Assimilation of Zinc Metal Ion With Hydroxyapatite for Impedance Studies

2021 ◽  
Author(s):  
POOVENDRAN K ◽  
K.S. Joseph Wilson
Keyword(s):  
Electrical Conductivity ◽  
Particle Size ◽  
Dielectric Properties ◽  
Metal Ion ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Wet Chemical ◽  
Particle Shapes ◽  
Wet Chemical Precipitation ◽  
Nanoscale Particle Size

Abstract The aim of the present work is to examine the doping outcome of Zn metal ions on hydroxyapatite for different concentrations (0.2, 0.4, 0.6, and 0.8). The samples for the pure and Zn doped HAp are synthesized by wet chemical precipitation method. The properties and the particle size are identified by using XRD. The functional bands of PO, CO and OH are analyzed through FTIR and the surface morphology and particle shapes are studied through SEM. The elemental analysis such as zinc, calcium and phosphates are analyzed by EDAX. All the designed elements are studied and confirm the (Ca+Zn)/PO ratio is nearly 1.67 and no other elements were identified in this study. The morphological particles of needle shape and the nanoscale particle size and shapes are studied by using TEM. The electrical conductivity of the synthesized ZnHAp ceramic is mainly related to width of the channel and the polarizability. The frequency dependence of the electric and dielectric properties was studied by using impedance spectroscopy.

scholarly journals Assimilation of Zinc Metal Ion With Hydroxyapatite for Formation and Dielectric Studies

2021 ◽  
Author(s):  
POOVENDRAN K ◽  
K.S. Joseph Wilson
Keyword(s):  
Particle Size ◽  
Metal Ion ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Dielectric Studies ◽  
Nyquist Plots ◽  
Wet Chemical ◽  
Particle Shapes ◽  
Wet Chemical Precipitation ◽  
Nanoscale Particle Size

Abstract The aim of the present work is to investigate the doping effect of Zn metal ions on hydroxyapatite for different concentrations (0.2, 0.4, 0.6, and 0.8). The samples for the pure and Zn doped HAp are synthesized by wet chemical precipitation method. The properties and the particle size are identified by using XRD. The functional bands of PO, CO and OH are analyzed through FTIR and the surface morphology and particle shapes are studied through SEM. The elemental analysis such as zinc, calcium and phosphates are analyzed by EDAX. All the designed elements are studied and confirm the (Ca+Zn)/PO ratio is nearly 1.67 and no other elements were identified in this study. The morphological particles of needle shape and the nanoscale particle size and shapes are studied by using TEM. The electrical conductivity of the synthesized ZnHAp ceramic is mainly related to width of the channel and the polarizability. The dielectric loss and nyquist plots were studied by using impedance spectroscopy.

STUDY OF STRUCTURAL AND DIELECTRIC PROPERTIES OF COPPER OXIDE NANOPARTICLES PREPARED BY WET CHEMICAL PRECIPITATION METHOD

2013 ◽  
Vol 12 (05) ◽  
pp. 1350036 ◽  
Author(s):  
KIBRIYA SIDDIQUE ◽  
BHABESH KUMAR NATH ◽  
SANJIB KARMAKAR
Keyword(s):  
Electron Microscopy ◽  
Dielectric Properties ◽  
Copper Oxide ◽  
Chemical Precipitation ◽  
Cuo Nanoparticles ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
X Ray ◽  
Wet Chemical ◽  
Wet Chemical Precipitation

We report the synthesis of copper oxide ( CuO ) nanoparticles prepared by wet chemical precipitation method. The structural and dielectric properties are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and complex impedance spectroscopy as a function of frequencies from 40 KHz to 100 KHz in the range of temperatures (308–393K). Maximum value of dielectric constants are found to be in the order of 106 which increases with increase in temperatures. From XRD data it is found that the particle size increases with increase in calcination temperatures. SEM with energy dispersive X-ray fluorescence spectrometer (EDX) results show that only CuO is present in the prepared sample. The selected area electron diffraction (SAED) pattern by TEM shows that uniform size distributions of CuO nanoparticles are present in the sample.

Synthesis and Structural Characterization of Zinc and Magnesium Doped Hydroxyapatite

2012 ◽  
Vol 531-532 ◽  
pp. 250-253 ◽  
Author(s):  
Hong Quan Zhang ◽  
Ming Zhang ◽  
Lu Wei Fu ◽  
Yu Ning Cheng
Keyword(s):  
Hydrothermal Treatment ◽  
Structural Characterization ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Starting Solution ◽  
Wet Chemical ◽  
Zn Ions ◽  
Wet Chemical Precipitation ◽  
Surface Of Crystals

Zn or Mg ions doped hydroxyapatite (HA) particles were successfully developed by introducing various concentration of Zn or Mg in the starting solution using wet chemical precipitation method and followed a hydrothermal treatment. The products were identified as HA by XRD and FTIR, and the precipitated particles had a rod-like morphology. All the products for Mg and Zn ions concentration in the preparation solution less than 40 mol% were identified as HA. Substitution of Mg and Zn in HA crystal would impair the crystallization of HA and significantly reduce the length of a, c values of HA unit cell, which clearly demonstrated that Mg or Zn ions were structurally incorporated into the apatite crystals, they were not just absorbed on the surface of crystals.

scholarly journals Far-infrared optical constants of ZnO and ZnO/Ag nanostructures

RSC Advances ◽  
2014 ◽  
Vol 4 (40) ◽  
pp. 20902-20908 ◽  
Author(s):  
Reza Zamiri ◽  
Avito Rebelo ◽  
Golriz Zamiri ◽  
Atena Adnani ◽  
Ajay Kuashal ◽  
...  
Keyword(s):  
Optical Constants ◽  
Far Infrared ◽  
Cost Effective ◽  
Chemical Precipitation ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Ag Nanoparticle ◽  
Wet Chemical ◽  
Wet Chemical Precipitation

We report on the synthesis of ZnO nanoplates and ZnO nanoplate/Ag nanoparticle heterostructures via a simple and cost effective wet chemical precipitation method.

Evaluation of Sr- and/or Mg-Containing Hydroxyapatite Behavior in Simulated Body Fluid

2014 ◽  
Vol 631 ◽  
pp. 61-66 ◽  
Author(s):  
Liga Stipniece ◽  
Kristine Salma-Ancane ◽  
Andris Putnins ◽  
Liga Berzina-Cimdina
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Apatite Formation ◽  
Particle Sizes ◽  
Chemical Phase ◽  
Ca Ions ◽  
Wet Chemical ◽  
Wet Chemical Precipitation

The main goal of this study was to evaluate the behavior of Sr- and/or Mg-containing hydroxyapatite (HAp) bioceramics in simulated body fluid (SBF). Sr-and/or Mg-containing HAp powders were synthesized by modified wet chemical precipitation method. Sr-and/or Mg-containing HAp bioceramics were prepared by uniaxial pressing of the precipitated powders and subsequent sintering at 1100 °C for 1 h. The synthesis products were characterized in terms of chemical, phase and molecular composition. Influence of the substitutions on thermal stability, morphology and microstructure of the HAp products were evaluated. Results suggest that incorporation of Sr (up to 1.45 wt.%) in HAp structure induced an increasing of particle sizes, but incorporation of Mg (up to 1.05 wt.%) led to a reduction of particle sizes of the HAp powders. The ability to simultaneously release bioactive ions and the apatite-formation ability of the Sr-and/or Mg-containing HAp bioceramics were evaluated through immersing the samples in SBF for different time periods. Ca ions release and apatite-formation ability on the surfaces of the Sr-and/or Mg-containing HAp bioceramics in SBF depends on Sr and/or Mg concentration in the samples.

Probing the photocatalytic competency of hydroxyapatite synthesized by solid state and wet chemical precipitation method

2021 ◽  
pp. 132142
Author(s):  
Mashrafi Bin Mobarak ◽  
Md. Sahadat Hossain ◽  
Zenefar Yeasmin ◽  
Monika Mahmud ◽  
Md. Maksudur Rahmana Sazia Sultana ◽  
...  
Keyword(s):  
Solid State ◽  
Chemical Precipitation ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Wet Chemical ◽  
Wet Chemical Precipitation
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