2015 |
Aliaga, J A; Araya, J F; Lozano, H; Benavente, E; Alonso-Nunez, G; González, G An Easy One-Pot Solvothermal Synthesis of Poorly Crystalline Solid Res2/C Microspheres Artículo de revista Materials Chemistry and Physics, 151 , pp. 372-377, 2015, ISSN: 0254-0584. Resumen | Enlaces | BibTeX | Etiquetas: amorphous carbon chalcogenides, composite growth-mechanism, material, nanoparticles, reduction, rhenium sulfide, technetium, temperature @article{aliaga2015onepot, title = {An Easy One-Pot Solvothermal Synthesis of Poorly Crystalline Solid Res2/C Microspheres}, author = { J.A. Aliaga and J.F. Araya and H. Lozano and E. Benavente and G. Alonso-Nunez and G. Gonz\'{a}lez}, url = {/brokenurl#<Go to ISI>://WOS:000348263600051}, doi = {10.1016/j.matchemphys.2014.12.012}, issn = {0254-0584}, year = {2015}, date = {2015-01-01}, journal = {Materials Chemistry and Physics}, volume = {151}, pages = {372-377}, publisher = {2014 Elsevier B.V.}, abstract = {Dense microspheres consisting of poorly crystalline ReS2 embedded in carbon were synthesized with a high yield via a facile one-pot solvothermal route, by reacting dirhenium decacarbonyl, elemental sulfur and an aromatic solvent (benzene, toluene or p-xylene) for 24 h at 180 degrees C. X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDS), Raman spectroscopy, and Fourier transform infrared spectroscopy (Fr-IR) techniques were used to characterize the samples. The resulting microspheres were dense, with average diameters between 0.79 and 1.40 mu m, had smooth surfaces and were constructed of ReS2 sheet-like structures with 4.5-9.8 wt % of structural amorphous carbon, which is retained as a textural stabilizer after calcination at 800 degrees C. The synthesis was repeated using isopropanol and cyclohexane, whose products were agglomerated grains and botryoidal quasi-spherical particles, respectively. A possible formation mechanism of ReS2/C microspheres was preliminarily presented, in order to clarify the mechanistic differences between the rhenium carbonyl and other transition metal carbonyls used in similar syntheses.}, keywords = {amorphous carbon chalcogenides, composite growth-mechanism, material, nanoparticles, reduction, rhenium sulfide, technetium, temperature}, pubstate = {published}, tppubtype = {article} } Dense microspheres consisting of poorly crystalline ReS2 embedded in carbon were synthesized with a high yield via a facile one-pot solvothermal route, by reacting dirhenium decacarbonyl, elemental sulfur and an aromatic solvent (benzene, toluene or p-xylene) for 24 h at 180 degrees C. X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDS), Raman spectroscopy, and Fourier transform infrared spectroscopy (Fr-IR) techniques were used to characterize the samples. The resulting microspheres were dense, with average diameters between 0.79 and 1.40 mu m, had smooth surfaces and were constructed of ReS2 sheet-like structures with 4.5-9.8 wt % of structural amorphous carbon, which is retained as a textural stabilizer after calcination at 800 degrees C. The synthesis was repeated using isopropanol and cyclohexane, whose products were agglomerated grains and botryoidal quasi-spherical particles, respectively. A possible formation mechanism of ReS2/C microspheres was preliminarily presented, in order to clarify the mechanistic differences between the rhenium carbonyl and other transition metal carbonyls used in similar syntheses. |
2015 |
An Easy One-Pot Solvothermal Synthesis of Poorly Crystalline Solid Res2/C Microspheres Artículo de revista Materials Chemistry and Physics, 151 , pp. 372-377, 2015, ISSN: 0254-0584. |