Synthesis and characterization of magnetic copper–iron-titanate and uptake studies of americium from nuclear waste solutions

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 111822-111830 ◽  
Author(s):  
Krishnan Muthukumar ◽  
D. Shanthana Lakshmi ◽  
Rajesh B. Gujar ◽  
Arvind B. Boricha ◽  
Prasanta K. Mohapatra ◽  
...  
Keyword(s):  
Magnetic Materials ◽  
Nuclear Waste ◽  
Synthesis And Characterization ◽  
Synthesis Conditions ◽  
Iron Titanate ◽  
Benign Nature ◽  
Uptake Studies ◽  
Foreign Materials

Magnetic materials, which find enormous applications due to their benign nature, can have their efficiency and stability enhanced by incorporation of foreign materials and controlling the synthesis conditions.

Synthesis and characterization of the lead borate Pb6B12O21(OH)6

2016 ◽  
Vol 71 (8) ◽  
pp. 925-933 ◽  
Author(s):  
Sandra Schönegger ◽  
Teresa S. Ortner ◽  
Klaus Wurst ◽  
Gunter Heymann ◽  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
Hydrothermal Synthesis ◽  
Potassium Nitrate ◽  
Lattice Parameters ◽  
Synthesis And Characterization ◽  
Lead Borate ◽  
Hydrothermal Conditions ◽  
Organic Reagents ◽  
Synthesis Conditions

AbstractA lead borate with the composition Pb6B12O21(OH)6 was synthesized through a hydrothermal synthesis, using lead metaborate in combination with sodium nitrate and potassium nitrate. The compound crystallizes in the trigonal, non-centrosymmetric space group P32 (no. 145) with the lattice parameters a = 1176.0(4), c = 1333.0(4) pm, and V = 0.1596(2) nm3. Interestingly, the data of Pb6B12O21(OH)6 correct the structure of a literature known lead borate with the composition “Pb6B11O18(OH)9”. For the latter compound, nearly identical lattice parameters of a = 1176.91(7) and c = 1333.62(12) pm were reported, possessing a crystal structure, in which the localization and refinement of one boron atom was obviously overlooked. The structure of Pb6B12O21(OH)6 is built up from trigonal planar BO3 and tetrahedral BO4 groups forming complex chains. The Pb2+ cations are located between neighboring polyborate chains. The here reported compound Pb6B12O21(OH)6 and “Pb6B11O18(OH)9” were, however, produced under different synthesis conditions. While “Pb6B11O18(OH)9” was synthesized via a hydrothermal synthesis including ethylenediamine and acetic acid, the here reported lead borate Pb6B12O21(OH)6 could be obtained under moderate hydrothermal conditions (240°C) without the addition of organic reagents.

Synthesis and characterization of hollow BaFe12O19 submicron spheres for advance functional magnetic materials

2014 ◽  
Vol 14 (9) ◽  
pp. 1208-1211 ◽  
Author(s):  
Moonhee Choi ◽  
Seungchan Cho ◽  
Yeonghwan Song ◽  
Sangmin Baek ◽  
Hyungkyu Kim ◽  
...  
Keyword(s):  
Magnetic Materials ◽  
Synthesis And Characterization

scholarly journals Thermal synthesis and characterization of AlχLa1-χ P3O9

2007 ◽  
Vol 5 (3) ◽  
pp. 706-714 ◽  
Author(s):  
Petr Bělina ◽  
Petra Šulcová ◽  
Miroslav Trojan ◽  
Pavel Mazurek
Keyword(s):  
Volume Concentration ◽  
Specific Conductivity ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Pigment Volume Concentration ◽  
Thermal Synthesis ◽  
X Ray ◽  
Synthesis Conditions ◽  
Dta And Tg

AbstractNew binary lanthanum-aluminum triphosphates were synthesized by thermal-condensation method from H3PO4, La2O3 and Al(OH)3. These pigments could be potentially used as special inorganic pigments; their corrosion-inhibition properties were widely studied. Synthesis conditions were determined on the basis of DTA and TG measurements. The products were also characterized by X-ray diffraction analysis. Physical properties — density by pycnometric method, particle size distribution, oil number and critical pigment volume concentration (CPVC), pH and specific conductivity of their aqueous extracts were also determined.

Synthesis and characterization of hard magnetic materials: PrFe10.5V1.5Nx

1997 ◽  
Vol 70 (22) ◽  
pp. 3044-3046 ◽  
Author(s):  
Weihua Mao ◽  
Benpei Cheng ◽  
Jinbo Yang ◽  
Xiedi Pei ◽  
Yingchang Yang
Keyword(s):  
Magnetic Materials ◽  
Synthesis And Characterization ◽  
Hard Magnetic Materials

scholarly journals Synthesis and Characterization of Novel Water Soluble Starch Tartarate Nanoparticles

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Suk Fun Chin ◽  
Suh Cem Pang ◽  
Lih Shan Lim
Keyword(s):  
Tartaric Acid ◽  
Soluble Starch ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Esterification Reaction ◽  
Particle Sizes ◽  
Sago Starch ◽  
Synthesis Conditions ◽  
Metroxylon Sagu

Starch tartarate nanoparticles were prepared by esterification reaction between native sago starch (Metroxylon sagu) and tartaric acid using dimethyl sulphoxide (DMSO) as a solvent and 2-dimethylamino pyridine (DMAP) as a catalyst at 100°C. The substitution of tartaric acid onto native sago starch was confirmed by the FTIR spectra which showed the presence of carbonyl group absorption band of tartarate ester. The solubility of the as-synthesized starch tartarate nanoparticles was observed to increase linearly with increase in the degrees of substitution. Under optimized synthesis conditions, starch tartarate nanoparticles of mean particle sizes which ranged from 200 nm to 300 nm were produced.

scholarly journals Synthesis and characterization of the starch/silicone composite and elaboration of its films

2021 ◽  
Author(s):  
Coyolicaltzin Peralta-González ◽  
Aurelio Ramirez-Hernandez ◽  
Gustavo Rangel-Porras ◽  
Alejandro Aparicio-Saguilán ◽  
Andrés Aguirre-Cruz ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Films ◽  
Sem Analysis ◽  
Synthesis And Characterization ◽  
Starch Granules ◽  
Mass Ratio ◽  
Synthesis Conditions ◽  
Packaging Industry ◽  
Potential Use

Abstract Synthesis of the starch/silicone composite carried out and its structural characterization by FTIR, Raman and 29Si NMR allowed to identify functional groups of the composite. The synthesis conditions were a starch/silicone mass ratio of 2.0 and a temperature of 150 oC to obtain a yield of 84.63 %. SEM analysis showed that the starch granules were covered by silicone, this caused a decrease in the crystallinity of starch. Composite films have higher thermal stability compared to native starch. Mechanical properties and electrical conductivity of the starch/silicone composite film increase with respect to starch-only films. While the crystallinity of both films is similar. The results obtained in this work indicate that starch/silicone composites can be an alternative to make films with a potential use for the packaging industry.

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