scholarly journals Mössbauer effect studies and X-ray diffraction analysis of cobalt ferrite prepared in powder form by thermal decomposition method

2003 ◽  
Vol 26 (5) ◽  
pp. 509-515 ◽  
Author(s):  
M. D. Joseph Sebastian ◽  
B. Rudraswamy ◽  
M. C. Radhakrishna ◽  
Ramani
Keyword(s):  
Thermal Decomposition ◽  
Diffraction Analysis ◽  
Mössbauer Effect ◽  
Decomposition Method ◽  
Cobalt Ferrite ◽  
Powder Form ◽  
X Ray Diffraction ◽  
Mossbauer Effect ◽  
X Ray ◽  
Thermal Decomposition Method

scholarly journals Extraction of Hydroxyapatite from Fish Scales and Its Integration with Rice Husk for Ammonia Removal in Aquaculture Wastewater

2019 ◽  
Vol 19 (4) ◽  
pp. 1019
Author(s):  
Sofiah Hamzah ◽  
Norhafiza Ilyana Yatim ◽  
Maslinda Alias ◽  
Asmadi Ali
Keyword(s):  
Thermal Decomposition ◽  
Rice Husk ◽  
Decomposition Method ◽  
Ammonia Removal ◽  
Fish Scales ◽  
X Ray Diffraction ◽  
Coating Agent ◽  
X Ray ◽  
Thermal Decomposition Method ◽  
Aquaculture Wastewater

Aquaculture plays an important role in providing food and generate high income in many developing countries but the abundance of ammonia discharged from aquaculture wastewater gives the problem to the environment. This study focused on the extraction of hydroxyapatite (HAp) from fish scales and its modification with rice husk to produce bio-adsorbent for ammonia removal from aquaculture wastewater. The comparison has been made for the HAp preparation via microwave irradiation, alkaline heat treatment, and thermal decomposition method. X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) were used to analyze the surface chemistry and crystallinity of HAp, respectively. While the morphology of the HAp was observed under a Scanning Electron Microscope (SEM). Hydroxyapatite extracted via thermal decomposition method shows the best performance about 79% of ammonia removal at 210 min contact time which selected for coating agent of rice husk (RH/HAp) and was successfully removed 84% at 60 min saturation time. The result shows thermal decomposition is the best technique to extract HAp from fish scales and its integration with rice husk exhibited a better performance of bio-adsorbent. The findings of this study provide useful fundamental knowledge and platform for the development and improvement of aquaculture wastewater treatment system in the future.

scholarly journals Synthesis of Transition Metal Dichalcogenides based hybrid nanostructures by thermal decomposition method

2021 ◽  
Vol 2070 (1) ◽  
pp. 012095
Author(s):  
Melbin Baby ◽  
K. Rajeev Kumar
Keyword(s):  
Electron Microscopy ◽  
Thermal Decomposition ◽  
Decomposition Method ◽  
Transition Metal Dichalcogenides ◽  
Hybrid Nanostructures ◽  
Hybrid Nanostructure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Thermal Decomposition Method ◽  
Metal Dichalcogenides

Abstract In this work, we report synthesis of hybrid nanostructures of Transition Metal Dichalcogenides via thermal decomposition method. Ammonium tetrathiomolybdate was used as not only growth templates but also as starting precursor for synthesis of hybrid nanostructures. The conditions for the synthesizing method were optimized using electron microscopy and x-ray diffraction. In this hybrid nanostructure synthesis, it was found that MoO3 nanorods are interspersed on exfoliated MoS2 nanosheets. The structural and optical properties of the hybrid nanostructure were investigated using transmission electron microscopy (TEM), Scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy and Ultraviolet Visible spectrophotometry (UV-VIS). The hybrid nanostructure of MoO3 on MoS2 shows a band gap of 2.2 eV. It was also found that by tuning the preparation parameters viz temperature of heating and time of heating, the composition of the hybrid nanostructure can be varied.

Phase Transition and Microstructure Development of BaTiO3 by Thermal Development of BaTiO3 by Thermal Decomposition Method

2018 ◽  
Vol 879 ◽  
pp. 13-17
Author(s):  
Sudarath Suntaropas ◽  
Panakamon Thonglor ◽  
Naphat Albutt
Keyword(s):  
Thermal Decomposition ◽  
Decomposition Method ◽  
Sintering Temperature ◽  
Particle Growth ◽  
Microstructure Development ◽  
X Ray Diffraction ◽  
X Ray ◽  
Thermal Decomposition Method ◽  
Thermal Development ◽  
Major Factors

The thermal decomposition was used to prepare BaTiO3 powders. Using BaCO3 and TiO2 powders as precursors and heat treatment in the temperature range of 600-1000 °C for 6 hr. The final product (BaTiO3) proceeds through a trace amount of Ba2TiO4. The phase transformation was investigated by X-ray diffraction (XRD) as a function of sintering temperature. The results show that the microstructures of BaTiO3 were developed during sintering at different temperature. In additional, the particle growth of BaCO3 and TiO2 are the major factors to affect of the particle growth mechanism.

scholarly journals A novel technique to synthesis of tenorite (CuO) nanoparticles from low concentration CuSO4 solution

2011 ◽  
Vol 47 (1) ◽  
pp. 73-78 ◽  
Author(s):  
E. Darezereshki ◽  
F. Bakhtiari
Keyword(s):  
Electron Microscopy ◽  
Decomposition Method ◽  
Raw Materials ◽  
Spherical Shape ◽  
Cuo Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Thermal Decomposition Method ◽  
Novel Technique ◽  
Transmission Electron

In this study CuO nanoparticles were prepared via direct thermal decomposition method using basic copper sulphates as wet chemically synthesized precursor which was calcined in air at 750?C for 2h. Samples were characterized by thermogravimetric (TG-DSC), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), infrared spectrum (IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The XRD, EDS, and IR results indicated that the synthesized CuO particles were pure. The SEM and TEM results showed that the CuO nanoparticles were of approximate spherical shape, and 170?5 nm in size. Using this method, Cuo nanoparticles could be produced without using organic solvent, expensive raw materials, and complicated equipment.

X-ray diffraction and Mössbauer-effect study of the decagonalAl7(Mn1−xFex)2alloy

1987 ◽  
Vol 35 (6) ◽  
pp. 3005-3008 ◽  
Author(s):  
B. Koopmans ◽  
P. J. Schurer ◽  
F. van der Woude ◽  
P. Bronsveld
Keyword(s):  
Mössbauer Effect ◽  
Effect Study ◽  
X Ray Diffraction ◽  
Mossbauer Effect ◽  
X Ray

Accelerated Thermal Decomposition of Graphene Oxide Films in Air via in Situ X-ray Diffraction Analysis

2016 ◽  
Vol 120 (27) ◽  
pp. 14984-14990 ◽  
Author(s):  
Qin Pan ◽  
Ching-Chang Chung ◽  
Nanfei He ◽  
Jacob L. Jones ◽  
Wei Gao
Keyword(s):  
Thermal Decomposition ◽  
Graphene Oxide ◽  
Diffraction Analysis ◽  
Oxide Films ◽  
X Ray Diffraction ◽  
X Ray
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