Simion, Andrada; Candu, Natalia; Coman, Simona M.; Primo Arnau, Ana Maria; Esteve-Adell, Iván; Michelet, Veronique; Parvulescu, Vasile I.; García Gómez, Hermenegildo(John Wiley & Sons, 2018-12-02)
[EN] Michael and Henry addition reactions have been investigated using mono (Au and Cu2O) and bimetallic nanoplatelets (Au/Cu2O) grafted onto few-layers graphene (fl-G) films as heterogeneous catalysts by comparison with ...
Tirsoaga Alina; Cojocaru, Bogdan; Teodorescu, Christian; Vasiliu, Florin; Grecu, Maria nicoleta; Ghica, Daniela; Parvulescu, Vasile I.; García Gómez, Hermenegildo(Elsevier, 2016)
[EN] A series of supported copper catalysts at two different loadings (1 and 2 wt%) have been prepared by deposition precipitation on various supports including TiO2, ZnO, Al2O3 and active carbon and submitted or not to ...
Peng, Lu; Jurca, Bogdan; Primo Arnau, Ana Maria; Gordillo, Alvaro; Parvulescu, Vasile I.; García Gómez, Hermenegildo(American Chemical Society, 2021-07-19)
[EN] Graphitic carbons are suitable supports of metal nanoparticles with catalytic activity. In the present study, the preparation of N-doped graphitic carbon supporting clusters of Fe-Co alloys starting from biomass waste ...
Primo Arnau, Ana Maria; He, Jinbao; Jurca, Bogdan; Cojocaru, Bogdan; Bucur, Cristina; Parvulescu, Vasile I.; García Gómez, Hermenegildo(Elsevier, 2019-05-15)
[EN] Powders of molybdenum disulfide platelets strongly grafted on graphene have been prepared by pyrolysis of ammonium alginate containing adsorbed various proportions of (NH4)(2)MoS4. After pyrolysis, formation of MoS2 ...
Primo Arnau, Ana Maria; Franconetti, Antonio; Magureanu, Monica; Mandache, Nicolae Bogdan; Bucur, Cristina; Rizescu, Cristina; Cojocaru, Bogdan; Parvulescu, Vasile I.; García Gómez, Hermenegildo(The Royal Society of Chemistry, 2018-06-07)
[EN] H2 plasma has been used to generate carbon vacancies on reduced graphene oxide to increase its catalytic activity as a hydrogenation catalyst. A relationship between the power of the plasma treatment and the exposure ...
Candu, Natalia; Simion, Andrada; Coman, Simona M.; Primo Arnau, Ana Maria; Esteve-Adell, Iván; Parvulescu, Vasile I.; García Gómez, Hermenegildo(Springer-Verlag, 2018)
[EN] Few-layered graphene-supported 1.1.1 and 2.0.0 oriented Au and Cu2O nanoplatelets were prepared by one-step pyrolysis of the corresponding metal salts embedded in chitosan at 900 degrees C under inert atmosphere. These ...
Coman, Simona M.; Podolean, Iunia; Tudorache, Madalina; Cojocaru, Bogdan; Parvulescu, Vasile I.; Puche Panadero, Marta; García Gómez, Hermenegildo(The Royal Society of Chemistry, 2017)
[EN] Modification of GO by organic molecules changes its catalytic activity in the hydrogen transfer from i-propanol to enones, affecting the selectivity to allyl alcohol and diastereoselectivity to the resulting stereoisomers. ...
Peng, Lu; Jurca, Bogdan; Primo Arnau, Ana Maria; Gordillo, Alvaro; Parvulescu, Vasile I.; García Gómez, Hermenegildo(Elsevier (Cell Press), 2022-05-20)
[EN] A catalyst based on first-row Fe and Co with a record of 51% selectivity to C-2-C-4 hydrocarbons at 36% CO2 conversion is disclosed. The factors responsible for the C2+ selectivity are a narrow Co-Fe particle size ...
Primo Arnau, Ana María; Esteve Adell, Iván; Blandez Barradas, Juan Francisco; Amarajothi, Dhakshinamoorthy; Alvaro Rodríguez, Maria Mercedes; Candu, Natalia; Coman, Simona M.; Parvulescu, Vasile I.; García Gómez, Hermenegildo(Nature Publishing Group, 2015-10)
[EN] Metal oxide nanoparticles supported on graphene exhibit high catalytic activity for oxidation,
reduction and coupling reactions. Here we show that pyrolysis at 900 C under inert
atmosphere of copper(II) nitrate ...
Parvulescu, Vasile I.; Parvulescu, Viorica; Ciuparu, Dragos; Hardacre, Chris; García Gómez, Hermenegildo(Elsevier, 2011)
[EN] In constant, search for micro/mesoporous materials, gallium phosphates, have attracted continued interest due to the large pore size reported for some of these solids in comparison with analogous aluminum phosphates. ...
Ilie, Mirela; Cojocaru, Bogdan; Parvulescu, Vasile I.; García Gómez, Hermenegildo(Elsevier, 2011)
[EN] A series of TiO2 photocatalysts dispersed on SiO2, modified with metals (Mn, Cr, V) or nonmetals (N or S) or covered with Au nanoparticles were prepared by incipient wetness impregnation, impregnation with urea or ...
Sastre Navarro, German Ignacio; Forneli Rubio, Mª Amparo; Almasan, Valer; Parvulescu, Vasile I.; García Gómez, Hermenegildo(Elsevier, 2017)
[EN] Adsorption of H-2/D-2 on graphene (G), graphene oxide (GO), single walled carbon nanotube (SWCNT), N-doped graphene [(N)G], and a sample of active carbon (C) has led to the detection of HD, indicating dissociative ...
Jurca, Bogdan; Bucur, Cristina; Primo Arnau, Ana Maria; Concepción Heydorn, Patricia; Parvulescu, Vasile I.; García Gómez, Hermenegildo(John Wiley & Sons, 2019-02-06)
[EN] N-doped, defective graphene obtained by pyrolysis of chitosan at 900 degrees C under Ar exhibits catalytic activity for the Sabatier hydrogenation of CO2 to CH4 at temperatures about 500 degrees C with estimated ...
Candu, Natalia; Dhakshinamoorthy, Amarajothi; Apostol, Nicoleta; Teodorescu, Cristian; Corma Canós, Avelino; García Gómez, Hermenegildo; Parvulescu, Vasile I.(Elsevier, 2017)
[EN] Facet 111 oriented Au nanoplatelets (20-40 nm wide, 3-4 nm height) grafted on graphene ((Au) over bar /fl-G) are about three orders of magnitude more efficient than Pd nanoparticles supported on graphene to promote ...
Jurca, Bogdan; Peng, Lu; Primo Arnau, Ana Maria; Gordillo, Alvaro; Dhakshinamoorthy, Amarajothi; Parvulescu, Vasile I.; García Gómez, Hermenegildo(MDPI AG, 2022-09)
[EN] Starting from the reported activity of Co-Fe nanoparticles wrapped onto graphitic carbon (Co-Fe@C) as CO2 hydrogenation catalysts, the present article studies the influence of a series of metallic (Pd, Ce, Ca, Ca, and ...
Rizescu, Cristina; Podolean, Iunia; Cojocaru, Bogdan; Parvulescu, Vasile I.; Coman, Simona M.; Albero-Sancho, Josep; García Gómez, Hermenegildo(John Wiley & Sons, 2017)
[EN] Impregnation of RuCl3 on N-doped graphenes results in the formation of well-dispersed, small ruthenium oxyhydroxide nanoparticles supported on N-doped graphene that may exhibit high selectivity (87%) for the conversion ...
Huyen, Pham T.; Nam, Le T. H.; Vinh, Tran Q.; Martínez, Cristina; Parvulescu, Vasile I.(Elsevier, 2018-05-15)
[EN] Al-SBA-15 and ZSM-5/SBA-15 (ZSC) composite were synthesized following hydrothermal procedures in the presence of triblock copolymer Poly(ethylene glycol)- poly(propylene glycol)-poly(ethylene glycol) (Pluronic P123) ...