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PbS nanostructures synthesized via surfactant assisted mechanochemical route

100%

Baláž P., Pourghahramani P., Dutková E., Fabián M., Kováč J., Šatka A.

Open Chemistry

2009

vol. 7

issue 2

215-221

PbS nanocrystals using surfactant assisted mechanochemical route has been successfully prepared. The methods of XRD, SEM, surface area and particle size measurements were used for nanocrystals characterization. The XRD patterns confirmed the presence of galena PbS (JCPDS 5–592) whatever treatment conditions were applied. The strong observable peaks indicate the highly crystalline nature in formation of PbS nanostructures where preferential crystal growth in the (200) direction after chelating agent (EDTANa2•2H2O) addition has been observed. The mean volume weighted crystallite size 4.9 nm and 35 nm has been calculated from XRD data using Williamson-Hall method for PbS synthesized without and/or with chelating agent, respectively corresponding with surface weighted crystallites sizes of 2.9 and 18.8 nm. The sample prepared without surfactant yields the smaller crystallites and the higher microstrain compared with surfactant assisted synthesis. The obtained results illustrate a possibility to manipulate crystal morphology by combining effect of milling and surfactant application. [...]

Synthesis of SrTiO3 by the Calcination of SrCO3 and TiO2 Mixtures Intensively Ground by Means of High Energy Milling

88%

Rocha-Rangel E., Pech-Rodríguez W. J., López-Hernández J., Calles-Arriaga C. A., Armendáriz-Mireles E. N., Castillo-Robles J. A., Rodríguez-García J. A., Rocha-Rangel E., Pech-Rodríguez W. J., López-Hernández J., Calles-Arriaga C. A., Armendáriz-Mireles E. N., Castillo-Robles J. A., Rodríguez-García J. A.

Archives of Metallurgy and Materials

2020

vol. 65

issue 2

Mechanochemical synthesis of some europium diketonates

88%

Zaharieva J., Milanova M., Todorovsky D.

Open Chemistry

2011

vol. 9

issue 2

290-299

Results on the influence of mechanoactivation (3–30 min) in a planetary ball mill on the composition, crystal structure, IR spectra and morphology of EuCl3·6H2O, dibenzoylmethane (HDBM) and mixtures of EuCl3·6H2O - HDBM and EuCl3·6H2O - HDBM - 1,10-phenathroline (phen) are presented. Mechanoactivation leads to a decrease of interplanar distances of the EuCl3·6H2O and HDBM and partial synthesis of Eu(DBM)3 and Eu(DBM)3·phen in the respective mixtures. The fluorescence properties of the products of activation (excitation and emission spectra, lifetime of the excited states) are similar to those of the complexes produced by the conventional “wet” methods, but the strongest excitation of the mechanochemically produced solid state samples is achieved at higher wavelength. Crystals of different forms (prismatic, needle-, long-length-leaf- and rod-like) are formed by mechanoactivation of the mentioned mixtures.

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2 Open Chemistry

1 Archives of Metallurgy and Materials

1 2020

1 2011

1 2009

1 Armendáriz-Mireles E. N.

1 Baláž P.

1 Calles-Arriaga C. A.

1 Castillo-Robles J. A.

1 Dutková E.

1 Fabián M.

1 Kováč J.

1 López-Hernández J.

1 Milanova M.

1 Pech-Rodríguez W. J.

1 Pourghahramani P.

1 Rocha-Rangel E.

1 Rodríguez-García J. A.

1 Todorovsky D.

1 Zaharieva J.

1 Šatka A.

Search results

PbS nanostructures synthesized via surfactant assisted mechanochemical route

Synthesis of SrTiO3 by the Calcination of SrCO3 and TiO2 Mixtures Intensively Ground by Means of High Energy Milling

Mechanochemical synthesis of some europium diketonates