Controllable Preparation of Zinc Phosphate Materials with Different Morphologies and Particle Size

2014 ◽  
Vol 1078 ◽  
pp. 20-24
Author(s):  
Jiang Jie Wang ◽  
Xiao Hong Yang ◽  
Jing Wang ◽  
Qin Tong ◽  
Jin Ku Liu
Keyword(s):  
Particle Size ◽  
Zinc Phosphate ◽  
Fourier Transforms ◽  
Control Mechanism ◽  
Functional Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Fourier Transforms Infrared Spectroscopy ◽  
Controllable Preparation

Zinc phosphate materials which have different morphologies, particle size and good crystalline were prepared via an effective template method. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FT-IR). The control mechanism of the zinc phosphate was investigated. Some practical experimental conclusions could be obtained, which were expected to have potential values in synthesis of functional materials.

FACILE SYNTHESIS OF HYDROXYLAPATITE NANOSTRUCTURES WITH VARIOUS MORPHOLOGIES

NANO ◽  
2009 ◽  
Vol 04 (03) ◽  
pp. 165-170 ◽  
Author(s):  
XIAO-JUN HU ◽  
JIN-KU LIU ◽  
XIAO-YAN QIN ◽  
JIA HUANG ◽  
YI YI
Keyword(s):  
Crystal Engineering ◽  
Fourier Transforms ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solution Approach ◽  
Engineering Research ◽  
Practical Applications ◽  
Transmission Electron ◽  
Ft Ir ◽  
Fourier Transforms Infrared Spectroscopy

The hydroxylapatite nanostructures with different morphologies have been synthesized by a facile solution approach. The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) technologies, and Fourier transforms infrared spectroscopy (FT-IR). The control mechanism of the hydroxylapatite with various morphologies nanostructures was investigated. Some practical experimental conclusions could be obtained, which were expected to have potential values in crystal engineering research and practical applications.

Effect of Synthesis Temperature on Particles Size and Morphology of Zirconium Oxide Nanoparticle

2017 ◽  
Vol 50 ◽  
pp. 18-31 ◽  
Author(s):  
Rudzani Sigwadi ◽  
Simon Dhlamini ◽  
Touhami Mokrani ◽  
Patrick Nonjola
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Zirconium Oxide ◽  
Thermo Gravimetric Analysis ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Crystallite Sizes ◽  
Ft Ir

The paper presents the synthesis and investigation of zirconium oxide (ZrO2) nanoparticles that were synthesised by precipitation method with the effects of the temperatures of reaction on the particles size, morphology, crystallite sizes and stability at high temperature. The reaction temperature effect on the particle size, morphology, crystallite sizes and stabilized a higher temperature (tetragonal and cubic) phases was studied. Thermal decomposition, band structure and functional groups were analyzed by Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), Thermo-gravimetric analysis (TGA) and Fourier transform infrared (FT-IR). The crystal structure was determined using X-ray diffraction. The morphology and the particle size were studied using (SEM) and (TEM). The shaped particles were confirmed through the SEM analysis. The transmission electron microscopic analysis confirmed the formation of the nanoparticles with the particle size. The FT-IR spectra showed the strong presence of ZrO2 nanoparticles.

scholarly journals Preparation and Properties of Ginger Essential Oil β-Cyclodextrin/Chitosan Inclusion Complexes

Coatings ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 305 ◽  
Author(s):  
Yan Zhang ◽  
Hui Zhang ◽  
Fang Wang ◽  
Li-Xia Wang
Keyword(s):  
Particle Size ◽  
Essential Oil ◽  
Spray Drying ◽  
Small Particle Size ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Ft Ir ◽  
Thermal Stability Of ◽  
Scanning Electron

The ginger essential oil/β-cyclodextrin (GEO/β-CD) composite, ginger essential oil/β-cyclodextrin/chitosan (GEO/β-CD/CTS) particles and ginger essential oil/β-cyclodextrin/chitosan (GEO/β-CD/CTS) microsphere were prepared with the methods of inclusion, ionic gelation and spray drying. Their properties were studied by using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermo-gravimetry analysis (TGA), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The results showed that the particle size of GEO/β-CD composite was smaller than that of β-CD and GEO/β-CD/CTS particles were loose and porous, while the microsphere obtained by spray drying had certain cohesiveness and small particle size. Besides, results also indicated that β-CD/CTS could modify properties and improve the thermal stability of GEO, which would improve its application value in food and medical industries.

Characterization and Evaluation of Ca/Al LDHs Adsorbents Synthesized by a One-Step Hydrothermal Method for Congo Red Removal

2020 ◽  
Vol 977 ◽  
pp. 195-200
Author(s):  
Hong Tham Thi Nguyen ◽  
Dao Thi To Uyen ◽  
Duy Chinh Nguyen ◽  
Van Thuan Tran ◽  
Tri Duc Lam ◽  
...  
Keyword(s):  
Congo Red ◽  
Fourier Transforms ◽  
X Ray Diffraction ◽  
Anionic Dyes ◽  
One Step ◽  
Ft Ir ◽  
Fourier Transforms Infrared Spectroscopy ◽  
Hydrothermal Approach ◽  
Double Hydroxide ◽  
Hydrolysis Of

We investigated the fabrication of Ca/Al layered double hydroxide (LDHs) via a one-step hydrothermal approach with slow hydrolysis of urea at a low temperature without further annealing required. The as-synthesized Ca/Al LDHs nanostructures obtained were defined using Fourier transforms infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), powder X-ray diffraction (XRD), and scanning electron microscopy (SEM). The results demonstrated that Ca/Al LDHs exhibit excellent adsorption performance on Congo red anionic dyes in aqueous solution. The adsorption capacity of the Ca/Al LDHs toward Congo red was found to be 59.41 mg/g.

Sonochemical Synthesis of Zn3(PO4)2.4H2O and Zn3(PO4)2 Powders

2012 ◽  
Vol 506 ◽  
pp. 94-97 ◽  
Author(s):  
M. Sutapun ◽  
B. Boonchom ◽  
Naratip Vittayakorn
Keyword(s):  
Orthophosphoric Acid ◽  
Zinc Phosphate ◽  
Structural Characteristics ◽  
Synthesis Method ◽  
Sonochemical Method ◽  
X Ray Diffraction ◽  
Sonochemical Synthesis ◽  
X Ray ◽  
Ft Ir ◽  
Xrd Patterns

Zn3(PO4)2.4H2O, which is an important component of biomedical zinc phosphate cement, was synthesized from an aqueous solution of zinc oxide and orthophosphoric acid by the sonochemical method. This synthesis method yielded best results with respect to high purity and crystallinity. Structural characteristics of the compound were investigated by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and scanning electron microscopy (SEM). FT-IR spectra indicated the presences of different crystallographic PO43ion and H2O molecules for the Zn3(PO4)2.4H2O and Zn3(PO4)2structures. The resulting XRD patterns showed the purity phases of orthorhombic Zn3(PO4)2.4H2O and the monoclinic for its final decomposed Zn3(PO4)2product. The thermal stability, crystallite size, and plate-like microparticles of Zn3(PO4)2.4H2O and Zn3(PO4)2are different in this work from those in previous reports, which may be caused by the starting reagents and reaction condition for the sonochemical method.

scholarly journals Reciprocal Powered Time model for Release Kinetic Analysis of Ibuprofen Solid Dispersions in Oleaster Powder, Microcrystalline Cellulose and Crospovidone

2010 ◽  
Vol 13 (2) ◽  
pp. 152 ◽  
Author(s):  
Ghobad Mohammadi ◽  
Mohammad Barzegar-Jalali ◽  
Hadi Valizadeh ◽  
Hossein Nazemiyeh ◽  
Azim Barzegar-Jalali ◽  
...  
Keyword(s):  
Particle Size ◽  
Drug Release ◽  
Solid Dispersions ◽  
Release Kinetic ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Diffraction Patterns ◽  
Release Data ◽  
Dsc Thermograms

ABSTRACT- Purpose. A physically sound derivation for reciprocal power time (RPT) model for kinetic of drug release is given. In order to enhance ibuprofen dissolution, its solid dispersions (SDs) prepared by cogrinding technique using crospovidone (CP), microcrystalline cellulose (MC) and oleaster powder (OP) as a novel carrier and the model applied to the drug release data. Methods. The drug cogrounds with the carriers were prepared and subjected to the dissolution studies. For elucidation of observed in vitro differences, FT-IR spectroscopy, X-ray diffraction patterns, DSC thermograms and laser particle size measurement were conducted. Results. All drug release data fitted very well to newly derived RPT model. The efficiency of the carriers for dissolution enhancement was in the order of: CP>OP>MC. The corresponding release kinetic parameter derived from the model, t50% (time required for 50% dissolution) for the carrier to drug ratio 2:1 were 2.7, 10.2 and 12.6 min, respectively. The efficiency of novel carrier, OP, was between CP and MC. FT-IR showed no interaction between the carriers and drug. The DSC thermograms and X-ray diffraction patterns revealed a slight reduced crystallinty in the SDs. Also grinding reduced mean particle size of drug from 150.7 to 44.4 µm. Conclusion. An improved derivation for RPT model was provided which the parameter of the model, t50%, unlike to previous derivations was related to the most important property of the drug i.e. its solubility. The model described very well drug release kinetics from the solid dispersions. Cogrinding was an effective technique in enhancing dissolution rate of ibuprofen. Elaeagnus angostifolia fruit powder was suggested as a novel potential hydrophilic carrier in preparing solid dispersion of ibuprofen.

scholarly journals C-dots dispersed macro-mesoporous TiO2 phtocatalyst for effective waste water treatment

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
M. Abd Elkodous ◽  
(Dr.) Ahmed Hassaan ◽  
Prof (Dr.) KAUSHIK PAL ◽  
(Dr.) A I Ghoneim ◽  
(Dr.) Zizi Abdeen
Keyword(s):  
Fourier Transforms ◽  
Waste Water Treatment ◽  
Mesoporous Tio2 ◽  
Halogen Lamp ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
X Ray ◽  
Fourier Transforms Infrared Spectroscopy ◽  
Template Free ◽  
Mesoporous Tio2 Spheres

Synthesis of macro-mesoporous Titania (Titanium dioxide-TiO2) nanospheres was successfully achieved using a modified template-free methodology to incorporate macroporous channels into a mesoporous TiO2 framework to form mixed macro-mesoporous TiO2 spheres (MMPT), which were doped with carbon dots (C-dots) to form improved nanocomposites (C-dots@MMPT). Elemental composition, surface bonding and optical properties of these nanocomposites were characterized by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR) and ultraviolet-visible absorption spectroscopy (UV-VIS). Evaluation of photocatalytic activity for each (C-Dots@MMPT) sample was performed via degrading the Methylene Blue (MB) dye compared with bare samples (MMPT) under visible light irradiation using 300 Watt halogen lamp.

scholarly journals Assessment of Corrosion Performance of Steel Rebar in Snail Shell Ash Blended Cements under Marine Environments

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7286
Author(s):  
Raghav Muralidharan ◽  
Karthick Subbiah ◽  
Taejoon Park ◽  
Han-Seung Lee
Keyword(s):  
Fourier Transforms ◽  
Decomposition Methods ◽  
Marine Environments ◽  
Corrosion Performance ◽  
X Ray Diffraction ◽  
Snail Shell ◽  
X Ray ◽  
Blended Cements ◽  
Steel Rebar ◽  
Fourier Transforms Infrared Spectroscopy

An attempt has been made on a constructive approach to evaluate the performance of snail shell ash (SSA) for its corrosion performance under marine environments. Corrosion performance of steel rebar in chloride-contaminated SSA with (0% to 50%) replacement levels of cement extract medium was examined through electrochemical and weight loss techniques. Initially, snail shell powder (SSP) is made by pulverizing and subsequently SSA is by thermal decomposition methods. Both SSP and SSA were characterized by X-ray diffraction, Fourier transforms infrared spectroscopy, scanning electron microscopy, and energy dispersion X-ray spectroscopy. Concrete cubes with 0% to 50% replacement levels of cement by SSA were evaluated for their mechanical properties. A critical level of 20 to 30% SSA improved both corrosion resistance and strength of concrete. Extrapolation modeling for the strength and corrosion rate with respect to later age were made. SSA is a suitable replacement material for natural limestone in cement productions.

Montmorillonite Intercalated Norfloxacin and Tobramycin for New Drug-Delivery Systems

2020 ◽  
Vol 20 (8) ◽  
pp. 5246-5251
Author(s):  
El-Refaie Kenawy ◽  
Nehal O. Shaker ◽  
Mohamed Azaam ◽  
Aya S. Lasheen ◽  
Jianjian Lin ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Fourier Transforms ◽  
Xrd Analysis ◽  
Delivery Systems ◽  
Release Behavior ◽  
X Ray Diffraction ◽  
Release Rates ◽  
X Ray ◽  
Ft Ir

The urgent need of safe, therapeutically and patient-compliant drug delivery systems (DDSs) continuously stimulates researchers to explore novel tools and strategies to monitor the loading and release of drugs. In this context, this study demonstrates that montmorillonite clay (MMT) is an appropriate material for changing the release behavior of Tobramycin and Norfloxacin drugs into medium. The DDSs were prepared by the intercalation of Tobramycin or Norfloxacin between MMT layers. The MMT-drug systems were analyzed using X-ray diffraction (XRD) analysis, scanning electron microscope (SEM), and Fourier transforms infrared (FT-IR). After insertion of the drugs between the layers of MMT, the periodicity in c-axis changed because of the formation of layered hybrid structures. The release of drugs was investigated using UV-spectrophotometer. The release rates are found to be dependent on pH of the medium. Moreover, we found that the percentage of release increases as the pH increases, however the release rate is low. These findings would be beneficial for controlled release of drugs for prolonged time in the future.

Synthesis and Characterization of Ag Doped Hydroxylapatite as an Antibacterial Scaffolds Material

2009 ◽  
Vol 283-286 ◽  
pp. 250-255 ◽  
Author(s):  
Abdurrahman Bahadir ◽  
Celaletdin Ergun ◽  
Murat Baydogan
Keyword(s):  
Fourier Transforms ◽  
Precipitation Method ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Scaffold Fabrication ◽  
Density Measurements ◽  
X Ray ◽  
Fourier Transforms Infrared Spectroscopy ◽  
And Behavior

Not many studies have been found in the literature on the effect of Ag ions on the structure and phase stability of hydroxylapatite which may be recognized as important information in the scaffold fabrication. The objective of the current study is to develop a better understanding on the structure and behavior of the antibacterial Ag incorporated hydroxylapatite. In order to do this, Ag doped hydroxylapatite was made by a precipitation method, and sintered in air at 1300oC. The materials were characterized by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), density measurements and scanning electron microscopy (SEM).

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