[EN] The inherent properties of a single atomic carbon layer in graphene offer opportunities for the creation of catalytically active centers tailored on a molecular level on a support with high thermal stability and very ...
Podolean, Iunia; Coman, Simona M.; Bucur, Cristina; Teodorescu, Christian; Kikionis, Stefanos; Ioannou, Efstathia; Roussis, Vassilios; Primo Arnau, Ana Maria; García Gómez, Hermenegildo; Parvulescu, Vasile I.(Elsevier, 2022-01-01)
[EN] The green macroalga Ulva rigida represents a promising feedstock for biorefinary due to its fast growth and cosmopolitan distribution. The main component of the cell walls of U. rigida is a sulfated glucuronorhamnan ...
Jurca, Bogdan; Peng, Lu; Primo Arnau, Ana Maria; Gordillo, Alvaro; Parvulescu, Vasile I.; García Gómez, Hermenegildo(American Chemical Society, 2021-08-11)
[EN] Pyrolysis of chitosan containing various loadings of Co and Fe renders Co-Fe alloy nanoparticles supported on N-doped graphitic carbon. Transmission electron microscopy (TEM) images show that the surface of Co-Fe NPs ...
Magureanu, Monica; Mandache, N. B.; Rizescu, C.; Bucur, Cristina; Cojocaru, Bogdan; Man, Isabela C.; Primo Arnau, Ana Maria; Parvulescu, Vasile, I.; García Gómez, Hermenegildo(Elsevier, 2021-06-15)
[EN] Graphene oxide (GO) and N-doped graphene [(N)G] graphenes were submitted to H-2 glow discharge under different discharge regimes, in both the negative glow and positive column plasma regions. The resulted catalysts ...
Podolean, Iunia; Cojocaru, Bogdan; García Gómez, Hermenegildo; Teodorescu, Christian; Parvulescu, Vasile I.; Coman, Simona M.(Springer-Verlag, 2018-11)
[EN] Ru@MNP-MWCNT catalysts were obtained via functionalization of nanostructured carbon-based carriers (ie, MWCNT) with base molecules (ie, 2-aminophenol and ethylenediamine) followed by the complexation with RuCl3. These ...
Trandafir, Mihaela-Mirela; Florea, Mihaela; Neatu, Florentina; Primo Arnau, Ana Maria; García Gómez, Hermenegildo; Parvulescu, Vasile I.(John Wiley & Sons, 2016)
[EN] Graphene obtained by pyrolysis of alginate at 900 degrees C under inert atmosphere and exfoliation is used as a metal-free catalyst for reduction of nitro to amino groups with hydrogen as a reagent. The process is ...
Parvulescu, Vasile I.; García Gómez, Hermenegildo(The Royal Society of Chemistry, 2018)
[EN] Heterogeneous catalysis is based mostly on materials built with strong covalent bonds. However, supramolecular aggregation in which individual components self-assemble due to non-covalent interactions to create a ...
Rizescu, Cristina; Podolean, Iunia; Albero-Sancho, Josep; Parvulescu, Vasile I.; Coman, Simona M.; Bucur, Cristina; Puche Panadero, Marta; García Gómez, Hermenegildo(The Royal Society of Chemistry, 2017-04-21)
[EN] N-Containing graphenes obtained either by simultaneous amination and reduction of graphene oxide or by pyrolysis of chitosan under an inert atmosphere have been found to act as catalysts for the selective wet oxidation ...
Simion, Andrada; Candu, Natalia; COJOCARU, BOGDAN; Coman, Simona M.; Bucur, C.; Forneli Rubio, Mª Amparo; Primo Arnau, Ana Maria; Man, Isabela Costinela; PARVULESCU, VASILE I.; García Gómez, Hermenegildo(Elsevier, 2020-10)
[EN] Films of few-layers defective N-doped or undoped graphene (10-15 nm) containing antimony oxide nanoparticles (15-30 nm) have been prepared on quartz by pyrolysis of alginate or chitosan adsorbing Sb(OAc)(3). XPS shows ...
Candu, Natalia; Man, Isabella; Andrada, Simion; COJOCARU, BOGDAN; Coman, Simona M.; Bucur, C.; Primo Arnau, Ana Maria; García Gómez, Hermenegildo; PARVULESCU, VASILE I.(Elsevier, 2019-08)
[EN] N-doped defective graphene [(N)G] obtained by pyrolysis at 900 degrees C of chitosan contains about 3.7% of residual N atoms, distributed as pyridinic, pyrrolic and graphitic N atoms. It has been found that (N)G acts ...