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SURFIN - Chimica fisica delle superfici e delle interfacce

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The research activity of the SurfIn group is focused on the synthesis and characterization of nanostructured materials intended for a wide range of applications, with the aim to elucidate the structure (bulk, surface) / function relationships. For instance, development of sustainable chemical processes,  environmental protection,  production of energy,  development of new materials/devices for diagnostics and therapeutics are between application fields of interest.

In all cases, the scientific approach is based on the synergy between the study at an atomic/molecular level of the nature and structure of surface sites exposed by the nanomaterials of interest and their interaction with molecular species and media, in controlled conditions.

Structural, morphological and textural features of nanomaterials are investigated by XRD, SAXS, EXAFS, XANES, SEM, HR-TEM and gas volumetric measurements.

Information on the electronic states of bulk and surface sites are obtained by electronic spectroscopy (UV-Vis-NIR), both in absorption (typically, in the Diffuse Reflectance mode) and emission (steady state and time resolved photoluminescence). Moreover, a relevant part of the studies of nature and structure of surface sites is carried out by in situ FT-IR spectroscopy of molecules adsorbed in controlled conditions. More recently, also Raman spectroscopy (traditional, resonance Raman and SERS) has been exploited in this regards. Furthermore, microgravimetry and adsorption microcalorimetry are employed to obtain quantitative and energetic data on the surface-molecules interactions.

Other than probes, adsorbed molecules can be also reactants, and in this regard in operando methods have been developed. Moreover, in the case of nanobiomaterials, spectroscopic investigations of molecules adsorbed via a liquid medium are carried out, taking into consideration various molecular substrates (drugs, aminoacids, proteins), and also operating in situ (typically, by IR in the ATR mode).

 

RESEARCH LINES

Nanostructured materials for catalysis

  • Metal nanoparticles (such as Au, Ni, Pt, Pd, Cu) or transition metal ions (such as Cr, Ti) supported on pure or mixed oxides (Al2O3, CeO2, ZrO2, SiO2, BaO/Al2O3), carbons or metal chlorides, as catalysts for Water Gas Shift reaction, CO PROX, VOCs abatement, synthesis of platform molecules from renewable resources, steam reforming, hydrogenation, DeNOx, olefin polymerization, etc.

upload_Figura_polymers_orizzontale.png

 

  • Acidic, heteroatom-substituted (Fe, etc) and exchanged (Cu, Co, Fe, Ni, etc) zeolites (MFI, mordenite, Beta, MCM-22, etc) and zeotypes (AlPOs, SAPOs and MeAlPOs, Me = Co, Mn, Fe, Ti, V) for selective oxidation reactions with benign oxidants, methanol to olefins (MTO), DeNOx, etc.

upload_catalysis1.jpg

  • Hybrid materials for CO2 activation. Fundamental studies of CO2 adsorption in functionalized microporous materials (MOFs, zeolites and hybrids) and its activation towards the synthesis of formic acid and other simple chemicals.

  • Functionalized porous polymers as scaffold for catalytic active phases (metal nanoparticles, transition metal ions, etc.)

  • MoS2 nanoparticles as catalyst for sulfur removal from hydrocarbons and as new material with peculiar optical properties.

 

Nanostructured materials for adsorption

Photoactive materials

Sensors

Nanocomposite and functional polymer materials and carbons

Ceramic membranes

Biomaterials

Stimuli reponsive

In operando set up

Journal covers

 INSTRUMENTS BOOKING

Prodotti della ricerca

Martini, Andrea, Borfecchia, Elisa, Lomachenko, K A , Pankin, I A , Negri, Chiara, Berlier, Gloria, Beato, P , Falsig, H , Bordiga, Silvia, Lamberti, Carlo (2017)
Composition-driven Cu-speciation and reducibility in Cu-CHA zeolite catalysts: A multivariate XAS/FTIR approach to complexity.
https://iris.unito.it/handle/2318/1651332

Pappas, Dimitrios K , Borfecchia, Elisa, Dyballa, Michael, Pankin, Ilia A , Lomachenko, Kirill, Martini, Andrea, Signorile, Matteo, Teketel, Shewangizaw, Arstad, Bjørnar, Berlier, Gloria, Lamberti, Carlo, Bordiga, Silvia, Olsbye, Unni, Lillerud, Karl Petter, Svelle, Stian, Beato, Pablo (2017)
Methane to Methanol: Structure-Activity Relationships for Cu-CHA.
https://iris.unito.it/handle/2318/1651670

Alessio, Masala, Vitillo, Jenny G , Giorgia, Mondino, Gianmario, Martra, Richard, Blom, Grande, Carlos A , Silvia, Bordiga (2017)
Conductive ZSM-5-Based Adsorbent for CO2 Capture: Active Phase vs Monolith.
https://iris.unito.it/handle/2318/1658088

Bordiga, Silvia, Lamberti, Carlo, Bonino, Francesca, Travert, Arnaud, Thibault-Starzyk, Frédéric (2015)
Probing zeolites by vibrational spectroscopies.
https://iris.unito.it/handle/2318/1534330

Carlos, Palomino Cabello, Gloria, Berlier, Giuliana, Magnacca, Paolo, Rumori, Gemma, Turnes Palomino (2015)
Enhanced CO2 adsorption capacity of amine-functionalized MIL-100(Cr) metal-organic frameworks.
https://iris.unito.it/handle/2318/1506325

D J Xiao, E D Bloch, J A Mason, W L Queen, M R Hudson, N Planas, J Borycz, A L Dzubak, P Verma, K Lee, F Bonino, V Crocella, J Yano, S Bordiga, D G Truhlar, L Gagliardi, C M Brown, J R Long (2014)
Oxidation of ethane to ethanol by N2O in a metal-organic framework with coordinatively unsaturated iron(II) sites.
https://iris.unito.it/handle/2318/153276

Giuliana Magnacca,Alex Allera,Enzo Montoneri,Luisella Celi,Damián E. Benito,Leonardo G. Gagliardi,Mónica C. Gonzalez,Daniel O. Mártire,Luciano Carlos
Novel Magnetite Nanoparticles Coated with Waste-Sourced Biobased Substances as Sustainable and Renewable Adsorbing Materials
http://hdl.handle.net/2318/146197

Caterina Barzan, Diego Gianolio, Elena Groppo, Carlo Lamberti, Vincent Monteil, Elsje Alessandra Quadrelli, Silvia Bordiga
The Effect of Hydrosilanes on the Active Sites of the Phillips Catalyst: The Secret for In Situ -Olefin Generation
http://hdl.handle.net/2318/141458

 

Ultimo aggiornamento: 23/05/2018 14:44
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