Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Mariusz Pietrowski"'
Publikováno v:
Molecules, Vol 29, Iss 14, p 3430 (2024)
Mesoporous silica materials were synthesized using inexpensive and environmentally friendly sucrose as a porogeneous agent. It was found that the presence of sucrose and the products of its chemical transformation during synthesis (e.g., furfural pol
Externí odkaz:
https://doaj.org/article/95d9f89a40d4415a93e19d0986e9a29a
Autor:
Joëlle Thuriot-Roukos, Camila Palombo Ferraz, Hisham K. Al Rawas, Svetlana Heyte, Sébastien Paul, Ivaldo Itabaiana Jr, Mariusz Pietrowski, Michal Zieliński, Mohammed N. Ghazzal, Franck Dumeignil, Robert Wojcieszak
Publikováno v:
Materials, Vol 16, Iss 19, p 6357 (2023)
Supported gold nanoparticles have proven to be highly effective catalysts for the base-free oxidation of furfural, a compound derived from biomass. Their small size enables a high surface-area-to-volume ratio, providing abundant active sites for the
Externí odkaz:
https://doaj.org/article/11361c02ad324365bddb49c77fe25ae4
Autor:
Marta Dobrosielska, Michał Zieliński, Miłosz Frydrych, Mariusz Pietrowski, Piotr Marciniak, Agnieszka Martyła, Bogna Sztorch, Robert E. Przekop
Publikováno v:
Ceramics, Vol 4, Iss 4, Pp 667-680 (2021)
Al2O3-TiO2 systems with Ti:Al 0.1, 0.5 and 1.0 molar ratio obtained by the sol–gel method have been used as a platinum support. As a precursor of alumina gel, aluminum isopropoxide has been chosen. Titanium tert-butoxylate was applied to obtain tit
Externí odkaz:
https://doaj.org/article/bd0904eb9bbb4a68bfff65ff25193c65
Publikováno v:
Molecules, Vol 28, Iss 17, p 6376 (2023)
This study focuses on the catalytic properties of ruthenium catalysts supported on modified silicalite-1 (with an MFI structure). By post-synthesis modification of silicalite-1 with solutions of alkali metal compound, a novel and cost-effective metho
Externí odkaz:
https://doaj.org/article/997a35a0a00c422dbd28a3482028d10b
Autor:
Emilia Alwin, Robert Wojcieszak, Kamila Kočí, Miroslava Edelmannová, Michał Zieliński, Agata Suchora, Tomasz Pędziński, Mariusz Pietrowski
Publikováno v:
Materials, Vol 15, Iss 3, p 710 (2022)
Pt, Ru, and Ir were introduced onto the surface of graphitic carbon nitride (g-C3N4) using the wet impregnation method. A reduction of these photocatalysts with hydrogen causes several changes, such as a significant increase in the specific surface a
Externí odkaz:
https://doaj.org/article/15c8be97fcd543f481924e1071ad3716
Autor:
Michał Zieliński, Monika Kot, Mariusz Pietrowski, Robert Wojcieszak, Jolanta Kowalska-Kuś, Ewa Janiszewska
Publikováno v:
Materials, Vol 14, Iss 16, p 4465 (2021)
This paper investigates the catalytic properties of the iridium catalysts supported on modified silicalite-1. Post-synthesis modification of silicalite-1, with solutions of ammonium compounds (NH4F and NH4OH), appeared to be an efficient method to ge
Externí odkaz:
https://doaj.org/article/28583a85dec245cd900dcdb807d95318
Autor:
Emilia Alwin, Michał Zieliński, Agata Suchora, Iwona Gulaczyk, Zbigniew Piskuła, Mariusz Pietrowski
Publikováno v:
Journal of Materials Science. 57:15705-15721
It was observed for the first time that the specific surface area of graphitic carbon nitride (g-C3N4) increased from 32 m2g−1 to 142 and 171 m2g−1 for Pt and Ru, respectively, due to the etching of g-C3N4 by Pt and Ru nanoparticles. Metal nanopa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09bfd3177145c55dc641e534af55acca
https://doi.org/10.1007/s10853-022-07621-x
https://doi.org/10.1007/s10853-022-07621-x
Publikováno v:
Materials, Vol 14, Iss 4, p 968 (2021)
The modification of commercial silica with solutions of NH4F or NH4Cl salts, followed by thermal treatment, enabled generation of the acidic sites in SiO2 and changed its textural properties. The use of ammonium salts solution also caused the generat
Externí odkaz:
https://doaj.org/article/3342ce436d564d109f5f5902b655a240
Autor:
Rafal Kukawka, Anna Pawlowska-Zygarowicz, Rafal Januszewski, Joanna Dzialkowska, Mariusz Pietrowski, Michal Zielinski, Hieronim Maciejewski, Marcin Smiglak
Publikováno v:
Catalysts, Vol 10, Iss 12, p 1414 (2020)
Functionalized siloxanes are one of the most important classes of organosilicon compounds, thus the enhancement of current methods of its synthesis is an important issue. Herein, we present the selective and highly effective reaction between 1,1,3,3-
Externí odkaz:
https://doaj.org/article/37a596ff156b45a197b604d394468868
Autor:
Emilia Alwin, Kamila Kočí, Robert Wojcieszak, Michał Zieliński, Miroslava Edelmannová, Mariusz Pietrowski
Publikováno v:
Materials, Vol 13, Iss 12, p 2756 (2020)
Graphitic carbon nitride (g-C3N4) was obtained by thermal polymerization of dicyandiamide, thiourea or melamine at high temperatures (550 and 600 °C), using different heating rates (2 or 10 °C min−1) and synthesis times (0 or 4 h). The effects of
Externí odkaz:
https://doaj.org/article/122c93f1eb984225b8d8d534d8aa12cf