Adam W. Augustyniak
@profile.chem.uni.wroc.pl
University of Wrocław - Faculty of Chemistry
RESEARCH, TEACHING, or OTHER INTERESTS
Catalysis, Materials Science, Inorganic Chemistry, Environmental Chemistry
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Marzena Fandzloch, Weronika Bodylska, Adam W. Augustyniak, Katarzyna Roszek, Anna Jaromin, and Anna Lukowiak
Elsevier BV
Adam W. Augustyniak, Andrzej Gniewek, Rafał Szukiewicz, Marcin Wiejak, Maria Korabik, and Anna M. Trzeciak
Elsevier BV
Adam W. Augustyniak and Anna M. Trzeciak
Elsevier BV
Anna Skarżyńska, Marta Kowalczyk, Mariusz Majchrzak, Marta Piętka, Adam W. Augustyniak, Miłosz Siczek, Kinga Włodarczyk, Aleksandra Simiczyjew, and Dorota Nowak
Wiley
AbstractPlatinum complexes [PtCl2(L)] L = L1, L2 with symmetrical HP (OCH2CMe2NH)2 (L1) and unsymmetrical HP(OCMe2CMe2O)(OCH2CMe2NH) (L2) hydrospirophosphorane (HSP) ligands were demonstrated to play a dual role of catalysts and cytotoxic compounds as well. The structure of new complex [PtCl2(L2)] was confirmed by physicochemical and spectroscopic methods, as well as single X‐ray diffraction studies for [PtCl2{P (OCMe2CMe2O)(OCH2CMe2NH2)}]. HSP ligand coordinated to the platinum center in bidentate κ2‐P,NH2 chelating mode of fashion. Both complexes were found to exhibit catalytic activity for Heck cross‐coupling reactions of iodobenzene with substituted styrenes, with good conversion and yield of stilbenes. Moreover, complexes have been applied as excellent catalysts for highly regioselective hydrosilylation of aromatic and aliphatic terminal olefins, and acetylenes terminal and internal as well. On the other hand, the preliminary biological studies revealed that in the presence of foretinib, drug candidate in clinical trials for the treatment of cancer, platinum complexes revealed increased synergistic effect and efficiently decreased the number of viable cells of triple negative breast cancer MDA‐MB‐231 cell line.
Waleed Alsalahi, Adam W. Augustyniak, Włodzimierz Tylus, and Anna M. Trzeciak
Wiley
AbstractThe new nanocomposites, Pd/C/ZrO2, PdO/ZrO2, and Pd/PdO/ZrO2, were prepared by thermal conversion of Pd@UiO‐66‐Zr−NH2 (MOF) in nitrogen or air atmosphere. The presence of Pd nanoparticles, uniformly distributed on the ZrO2 or C/ZrO2 matrix, was evidenced by transmission electron microscopy, scanning electron microscopy (SEM), Raman and X‐ray Photoelectron Spectroscopy (XPS) methods. All pyrolysed composites retained the shape of the MOF template. They catalyze carbonylative Suzuki coupling under 1 atm CO with an efficiency significantly higher than the original Pd@UiO‐66‐Zr−NH2. The most active PdO/ZrO2 composite, formed benzophenone with TOF up to 1600 h−1, while by using Pd@UiO‐66‐Zr−NH2, much lower TOF values, 51–95 h−1, were achieved. After the reaction, PdO/ZrO2 was recovered with the same composition and catalytic activity. Very good results were also obtained in the transfer hydrogenation of benzophenones to alcohols with Pd/C/ZrO2 and PdO/ZrO2 catalysts under microwave irradiation.
Adam W. Augustyniak and Anna M. Trzeciak
Wiley
AbstractThe novel Pd‐nanocomposites, fabricated via calcination of the MOF [Pd(2‐pymo)2]n (2‐pymo=2‐pyrimidinolate), were used for the first time in the transfer hydrogenation of phenylacetylene with NaBH4. The presence of Pd NPs or PdO in the studied materials was evidenced by XPRD, Raman spectroscopy, XPS and HR‐TEM. Under mild reaction conditions, in water as a solvent, Pd‐nanocomposites, Pd/CPYMO and PdO/Pd/CPYMO, provided better catalytic results than the pristine [Pd(2‐pymo)2]n, producing styrene with good selectivity. These two catalysts showed also good durability in subsequent reuses, while the productivity of PdO/CPYMO decreased after the second run.
Adam W. Augustyniak and Anna M. Trzeciak
Elsevier BV
Marzena Fandzloch, Adam W. Augustyniak, Liliana Dobrzańska, Tomasz Jędrzejewski, Jerzy Sitkowski, Magdalena Wypij, and Patrycja Golińska
Elsevier BV
Stanisława Tarnowicz‐Ligus, Adam Augustyniak, and Anna M. Trzeciak
Wiley
Two palladium complexes of a PdCl2P2 type with P = tri(1‐piperidinyl)phosphine (Pd‐1) and triphenylphosphine (Pd‐2) were successfully immobilized on [Ni8(OH)4(OH2)2(L)6]n (Ni‐MOF) material [L=4,4′‐(benzene‐1,4‐diyldiethyne‐2,1‐diyl)bis(1‐H‐pyrazole)] to form Pd@Ni‐MOF composites. The presence of big octahedral cavities in the Ni‐MOF structure (2.4 nm) enabled incorporation of PdCl2P2 molecules inside the Ni‐MOF, as confirmed by physicochemical measurements and computer simulation. The Pd@Ni‐MOF composites catalyzed arylation of estragole by iodobenzene with an efficiency higher than that for the corresponding PdCl2P2 compounds without MOF. Arylation of eugenol by PhB(OH)2 unexpectedly resulted in the formation of ether as the main product. This was explained by the dominating activity of the Cu@MOF catalyst, formed in situ under the reaction conditions.
Rodrigo Gil-San-Millan, Elena López-Maya, Ana E. Platero-Prats, Virginia Torres-Pérez, Pedro Delgado, Adam W. Augustyniak, Min Kun Kim, Hae Wan Lee, Sam Gon Ryu, and Jorge A. R. Navarro
American Chemical Society (ACS)
UiO-66, MOF-808 and NU-1000 metal-organic frameworks exhibit a differentiated reactivity to-wards [Mg(OMe)2(MeOH)2]4 related to the accessi-bility of the pore structure. Microporous UiO-66 remains unchanged while mesoporous MOF-808 and hierarchical micro/mesoporous NU-1000 mate-rials give rise to the formation of doped systems containing exposed MgZr5O2(OH)6 heterometallic clusters in the mesoporous cavities. This modifica-tion is responsible for a remarkable enhancement of the catalytic activity towards the hydrolytic degra-dation of P-F and P-S bonds of toxic nerve agents, at room temperature, in unbuffered aqueous solutions.
A.M. Trzeciak and A.W. Augustyniak
Elsevier BV
Adam W. Augustyniak, Masaaki Sadakiyo, Jorge A. R. Navarro, and Anna M. Trzeciak
Wiley
AbstractThe three‐dimensional microporous Ti‐based MOF material MIL‐125‐NH2 (MIL: Material of Institut Lavoisier) was successfully used as a support for palladium nanoparticles designed as catalysts for p‐nitrophenol hydrogenation. According to the mild and green synthetic approach, two catalysts of different nanoparticle morphology and different catalytic activity were obtained. Enhanced catalytic activity was found for a catalyst prepared using KBr as a capping agent, while Pd NPs of undefined shape synthesized without KBr were less active.
Adam W. Augustyniak, Tomasz T. Suchecki, and Hidehiro Kumazawa
Informa UK Limited
ABSTRACT Nitrogen mono-oxide and sulfur dioxide can be removed by simultaneous absorption into aqueous mixed solutions of sulfite and [FeII(edta)]H2O)]2−, ferrous ion coordinated to an anion of ethylene-diaminetetraacetic acid (EDTA or edta). In the industrial system with coexisting oxygen in the gas phase, [FeII(edta)](H2O)]2− complex is oxidized to [FeIII(edta)](H2O)]− by molecular oxygen. Because the ferric complex has no capability for reaction with NO, the suppression of this undesired oxidation process is a very important technological problem to be overcome. In our preceding work, we discussed the reduction kinetics of ferric ion by metal powder on the basis of the kinetic data regarding the ferric ion reduction in aqueous solutions of [FeIII(edta)](H2O)]− containing aluminum, tin or zinc powders. Zinc powder of normal size was recognized as an effective reducing agent. In the present work, augmentation of reducing capability of zinc powder was examined more. The rate of reduction of nano-size zinc powder was found to be about 11 times higher than that of normal-size zinc one.
A. W. Augustyniak, W. Zawartka, J. A. R. Navarro, and A. M. Trzeciak
Royal Society of Chemistry (RSC)
Methanolic reduction of [PdCl2(CH3CN)2] on a [Ni(2,5-di(1H-pyrazol-4-yl)benzenesulfonate)2] metal organic framework gives rise to Pd2+/Pd0 nanocomposites with Suzuki and carbonylative Suzuki heterogeneous catalytic activities.
A. W. Augustyniak, M. Fandzloch, M. Domingo, I. Łakomska, and J. A. R. Navarro
Royal Society of Chemistry (RSC)
A vanadium(iv) pyrazolate-based open metal–organic polyhedron of [V3(μ3-O)O(OH)2(μ4-BPD)1.5(μ-HCOO)3] (BDP = benzene-1,4-bipyrazolate) formulation gives rise to a porous crystal structure exhibiting micro and mesoporosity which is useful for selective adsorption of gases.
Tomasz T. Suchecki, Barbara Mathews, Adam W. Augustyniak, and Hidehiro Kumazawa
American Chemical Society (ACS)
Nitrogen and sulfur oxides (NOx and SOx) emitted from fossil-fuel-fired facilities can be simultaneously absorbed into aqueous mixed solutions of sulfite and FeIIL, a ferrous ion coordinated to a ligand L (a chelate compound). Usually, the ligand L represents an anion of ethylenediaminetetraacetic acid (EDTA or edta). Nitrogen oxide (NO) sparingly soluble in water is promptly bound to the [FeII(edta)(H2O)]2– complex to form the [FeII(edta)(NO]2–compound. However, [FeII(edta)(H2O]2– chelate is oxidized to form [FeIII(edta)(H2O)]− by NO, NO2, and O2, normally coexisting in flue gases. Because the ferric complex does not react with NO, the suppression of these undesired oxidation processes is a very important technological problem to be overcome. Thus, in this work, the reduction kinetics of ferric ion by metal was discussed on the basis of the kinetic data regarding the ferric ion reduction in aqueous solutions of [FeIII(edta)(H2O)]− containing such pulverized metals as aluminum, tin, and zinc. The rate exp...