Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Dimitrinka Voykova"'
Autor:
Paunka Vassileva, Vencislav Tumbalev, Diana Kichukova, Dimitrinka Voykova, Daniela Kovacheva, Ivanka Spassova
Publikováno v:
Materials, Vol 16, Iss 17, p 5754 (2023)
In the current investigation, the removal efficiency regarding a cationic dye, methylene blue (MB), from three graphene-based materials was investigated. The materials’ characterization process involved instrumental methods such as XRD, XPS, SEM, T
Externí odkaz:
https://doaj.org/article/56918b5f0de24993b916ccab95c8cf88
Autor:
Georgi Gluhchev, Dimitrinka Voykova, P. Vassileva, Nikolay Ivanov, Dimitar Mehandjiev, Ignat Ignatov
Publikováno v:
International Research Journal of Pure and Applied Chemistry. :78-82
Chemical processes that could occur in the anode chamber of an electrolytic cell divided by a semi-permeable membrane when direct current passes through a water solution of weak mineralization are described. The interest concerns the possibility of a
Autor:
L. Aleksandrov, Tsvetomila Lazarova, D. Tzankov, Zara Cherkezova-Zheleva, M. Georgieva, Daniela Kovacheva, Dimitrinka Voykova
Publikováno v:
Journal of Alloys and Compounds. 700:272-283
Single phase nanosized NiFe 2 O 4 powders were prepared by a solution combustion method with the use of four different types of fuel (two of them containing nitrogen and the other two - pure hydrocarbons). The resulting materials were characterized w
Publikováno v:
Separation Science and Technology. 51:797-806
In the present study agricultural waste (rice husks) was used for the production of biogenic silica. The resulting material was obtained by incineration of rice husks at a temperature of 800°С and was characterized by means of XRD, FTIR, SEM-EDS, H
Autor:
Tsvetelina I. Gerganova, Ralitsa H. Georgieva, Dimitrinka Voykova, Yordanka Y. Ivanova, P. Vassileva, Albena Detcheva
Publikováno v:
Open Chemistry, Vol 10, Iss 5, Pp 1484-1494 (2012)
The adsorption properties of two new nanostructured hybrid materials containing B2O3 and ZrO2 were studied. The new organic-inorganic materials were synthesized via a sol-gel method. As a modifying agent, a quantity of 10 wt.% Zr(OPr)4 or B(OCH3)3 wa
Autor:
Dimitrinka Voykova, Ralitsa H. Georgieva, Tsvetelina I. Gerganova, P. Vassileva, Albena Detcheva, Yordanka Y. Ivanova
Publikováno v:
Open Chemistry, Vol 9, Iss 5, Pp 932-940 (2011)
In the present work the adsorption of some transition metal ions from aqueous solutions on a silica-based nanostructured hybrid material modified by aluminium was investigated. The novel organic-inorganic material was synthesized via a sol-gel method