Aluminosilicates with varying alumina–silica ratios: synthesis via a hybrid sol–gel route and structural characterisation

2010 ◽  
Vol 39 (21) ◽  
pp. 5101 ◽  
Author(s):  
Padmaja Parameswaran Nampi ◽  
Padmanabhan Moothetty ◽  
Frank John Berry ◽  
Michael Mortimer ◽  
Krishna Gopakumar Warrier
Keyword(s):  
Sol Gel ◽  
Structural Characterisation

scholarly journals Preparation, structural characterisation and antibacterial properties of Ga-doped sol–gel phosphate-based glass

2009 ◽  
Vol 44 (7) ◽  
pp. 1858-1867 ◽  
Author(s):  
D. M. Pickup ◽  
S. P. Valappil ◽  
R. M. Moss ◽  
H. L. Twyman ◽  
P. Guerry ◽  
...  
Keyword(s):  
Sol Gel ◽  
Antibacterial Properties ◽  
Structural Characterisation

Synthesis and Structural Characterisation of a Hexanuclear GdIII Compound Gd6(μ3-OH)6(acac)12·1.25 CHCl3 as a Potential Precursor for Gd2O3 Nanomaterials

2009 ◽  
Vol 64 (3) ◽  
pp. 263-268 ◽  
Author(s):  
Ashutosh Pandey ◽  
Anjana Pandey ◽  
Peter Mayer ◽  
Wolfgang J. Parak
Keyword(s):  
Sol Gel ◽  
Crystal Structure Analysis ◽  
Molar Ratio ◽  
High Yield ◽  
Structural Characterisation ◽  
Crystalline Product ◽  
Metal Atoms ◽  
Nano Crystalline ◽  
Gel Treatment ◽  
Potential Precursor

While aging the reaction mixture of gadolinium tri-isopropoxide with acetylacetone (pentane-2,4- dione, acacH) in a 1 : 2 molar ratio in toluene for crystalisation, crystals of Gd6(μ3-OH)6(acac)12・1.25 CHCl3 (1) were obtained in high yield. The crystal structure analysis reveals that 1 has a M6O12 core which is constituted of two distorted, tricapped, face-sharing cubane units (each with one missing edge) wherein the metal atoms are octacoordinated with a distorted square-antiprismatic geometry. In a sol-gel treatment the amorphous xerogel obtained from 1 was transformed into a nano-crystalline product at 600 °C while the xerogel of Gd(OPri)3 under similar conditions required a heat treatment up to 900 °C for the same development.

scholarly journals New sol–gel synthesis of a (CaO)0.3(Na2O)0.2(P2O5)0.5 bioresorbable glass and its structural characterisation

2007 ◽  
Vol 17 (45) ◽  
pp. 4777 ◽  
Author(s):  
David M. Pickup ◽  
Paul Guerry ◽  
Robert M. Moss ◽  
Jonathan C. Knowles ◽  
Mark E. Smith ◽  
...  
Keyword(s):  
Sol Gel ◽  
Structural Characterisation ◽  
Sol Gel Synthesis

2D Assemblies of Silicon Nanocrystallites Prepared by sol-gel Method from Triethoxysilane.

2002 ◽  
Vol 737 ◽  
Author(s):  
Jerôme Rouquette ◽  
Monique Pauthe ◽  
Michel Ramonda ◽  
Thierry Taliercio ◽  
Bernard Gil ◽  
...  
Keyword(s):  
Silica Gel ◽  
Sol Gel ◽  
Vapour Phase ◽  
Silicon Substrates ◽  
Static Vacuum ◽  
Structural Characterisation ◽  
Carrier Recombination ◽  
Heat Treated ◽  
Heating Treatment ◽  
Silicon Nanocrystallites

The sol-gel route using triethoxysilane as a precursor has been used to prepare films of Si nanocrystallites. These films were deposited on (001)-oriented silicon substrates either by spin coating deposition of a liquid phase that was further heat-treated under static vacuum (dots embedded in silica gel) or by vapour phase from the thermal decomposition under vacuum of the dried gels (uncapped dots). We address the structural characterisation of these samples and we find that a spontaneous orientation of the crystallites is obtained for heating treatment beyond 800°C if the dots are deposited in the vapour phase. The optical properties of dots embedded in silica gel reveal a strong red-orange photoluminescence due to carrier recombination at the dot surface, which is noticeably contaminated by oxygen and hydrogen.

Structural characterisation of slightly Fe-doped SrTiO3 grown via a sol–gel hydrothermal synthesis

2015 ◽  
Vol 75 (3) ◽  
pp. 593-601 ◽  
Author(s):  
S. Fuentes ◽  
P. Muñoz ◽  
N. Barraza ◽  
E. Chávez-Ángel ◽  
C. M. Sotomayor Torres
Keyword(s):  
Hydrothermal Synthesis ◽  
Sol Gel ◽  
Structural Characterisation
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