Publikace
22.12.2013 13:50
Štengl, V., Bakardjieva S., Bakardjiev M., Štíbr, B., Kormunda M., Carborane Functionalised Graphene Oxide, the Precursor for Formation Conductive Self-Assembled Monolayers, Carbon, Volume 67, February 2014, Pages 336–343
Abstract: A new, advanced graphene oxide based material modified with the extremely stable ocarboranoyl 1,2-C2B10H11 unit was created. The carboranoyl-functionalized graphene oxide was synthesized from Li[1,2-C2B10H11] and COCl-functionalized graphene-oxide, which was prepared by converting the...
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22.12.2013 13:44
Štengl, V., Bakardjieva, S., Henych, J., Lang, K., Kormunda, M., Blue and green luminescence of reduced graphene oxide quantum dots, Carbon (2013), doi: https://dx.doi.org/10.1016/j.carbon. 2013.07.031
Abstract: We report on a new method for synthesising strongly blue and green photoluminescent graphene quantum dots (GQDs). Graphene was prepared by a new feasible method using an intensive cavitation field in a pressurised ultrasonic batch reactor. The prepared graphene was quantitatively...
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22.12.2013 13:36
Štengl, V., J. Henych, P. Vomáčka and M. Slušná, Doping of TiO2-GO and TiO2-rGO with Noble Metals: Synthesis, Characterization and Photocatalytic Performance for Azo Dye Discoloration, Photochemistry and Photobiology, 2013, DOI: 10.1111/php.12139
Abstract: The nanocomposites of titania coupled with graphene oxide (GO) and reduced graphene oxide (rGO) respectively, were prepared by homogeneous hydrolysis with urea. Graphene was obtained by effect of high intensity cavitation field on natural graphite in the presence of strong aprotic...
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16.03.2013 11:34
Štengl V., Henych J., Strongly luminescent monolayered MoS2 prepared by effective ultrasound exfoliation, Nanoscale, 2013, DOI: 10.1039/C3NR00192J
Abstract: Intense ultrasound in a pressurized batch reactor was used for preparation of monolayered MoS2 nanosheets from natural mineral molybdenite. Exfoliation of bulk MoS2 using ultrasound is an attractive route to large-scale preparation of monolayered crystals. To evaluate the...
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16.03.2013 11:30
Štengl V., Bakardjieva S., Matys Grygar T., Bludsska J., Kormunda M., TiO2-graphene oxide nanocomposite as advanced photocatalytic materials, Chemistry Central Journal 2013, 7:41 doi:10.1186/1752-153X-7-41
Background
Graphene oxide composites with photocatalysts may exhibit better properties than pure photocatalysts via improvement of their textural and electronic properties.
Results
TiO2-Graphene Oxide (TiO2 - GO) nanocomposite was prepared by thermal hydrolysis of suspension with...
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10.07.2012 20:06
Štengl V., Grygar T.M., Bludská J., Grafen na cestě z laboratoře do praxe, Vesmír, 91, 7, 2012
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29.06.2012 19:28
Štengl V., Preparation of graphene by using an intense cavitation field in a pressurized ultrasonic reactor, Chemistry - A European Journal, DOI: 10.1002/chem.201201411
Abstract: We demonstrate a new and efficient method to produce a large quantity of high-quality and non-oxidized graphene flakes from powdered natural graphite using a high intensity cavitation field in a pressurized ultrasonic reactor. Transmission electron microscopy and selected area...
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23.11.2011 21:38
Štengl V., Popelková D., Vláčil P., TiO2-Graphene Nanocomposite as High Performance Photocatalysts, Journal of Physical Chemistry C, 115 (51), pp 25209–25218
Abstaract: Nonstoicheiometric TiO2-Graphene nanocomposite was prepared by thermal hydrolysis of suspension graphene nanosheets and titania peroxo-complex. The characterization of graphene nanosheets was provided by using an atomic force microscope (AFM). The prepared samples were ...
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Kontakt
Mgr. Václav Štengl, Ph.D.Oddělení chemie pevných látek
Ústav anorganické chemie
AV ČR v.v.i
250 68 Husinec-Řež
266 173 193
stengl@iic.cas.cz