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Cari tutti,

vi invitiamo a partecipare all’incontro “SMeet”- Science Sharing Meetings, previsto per venerdì 21 Maggio 2021 ore 15:00 (ammissione in stanza disponibile dalle 14:50) che, attenendoci al protocollo relativoall’emergenza COVID-19, si terrà online tramite la piattaforma Microsoft Teamsattraverso il seguente link:

http://bit.ly/SMEET-IMM

Ilmeeting prevede:

· Speaker: GabriellaMilazzo

· Chair: StefaniaPrivitera

· Titolo: Catalystfor green hydrogen generation

· Abstract: Photocatalysis and electrolysis arecrucial processes for the development of a sustainable, clean energy system,since they enable solar fuel production, such as hydrogen by water splitting,as well as CO2 reduction [1,2]. In these processesefficient and robust catalysts for water oxidation are required and thereduction of employed amount of noble metals is crucial to reduce costs andincrease the sustainability of the technology. We have employed electrolessdeposition by spontaneous galvanic displacement [1–4] as a simple, low cost,highly scalable technique. By varying the deposition parameters, optimalconditions for Pt and IrO2 deposition on Nickel foam have been achieved[5–7]. The electrode coverage by catalyst has also a positive impact on itsstability, strongly decreasing the degradation rate, compared to the case ofbare Ni foam. The average amount of noble metal in the best performingelectrodes is well below the typical values adopted for PEM (Proton ExchangeMembranes Electrolyzers) [8]. The proposed approach is highly promising for gasdiffusion electrodes, and can be implemented in electrolytic cells, as well asin fuel cells.

References
[1]    Milazzo RG, Mio AM, D’Arrigo G, Spinella C, Grimaldi MG, Rimini E. Electrolessdeposition of gold investigated with rutherford backscattering and electronmicroscopy. 2014 IEEE 9th Nanotechnology Materials and Devices Conference (NMDC)2014:37–40. https://doi.org/10.1109/NMDC.2014.6997416.
[2]    Milazzo RG, Privitera S, Litrico G, Scalese S, Mirabella S, La Via F, et al. Formation, Morphology, and Optical Properties ofElectroless Deposited Gold Nanoparticles on 3C-SiC. Journal of PhysicalChemistry C 2017;121. https://doi.org/10.1021/acs.jpcc.6b11638.
[3]    Milazzo RG, Mio AM, D’Arrigo G, Grimaldi MG, Spinella C, Rimini E. Coalescenceof silver clusters by immersion in diluted HF solution. The Journal of ChemicalPhysics 2015;143:024306. https://doi.org/10.1063/1.4926530.
[4]    Milazzo RG, Privitera SMS, Scalese S, Mirabella S, Bongiorno C, Lombardo SA, etal. New insight into Pt nucleation mechanism on Si surface during galvanicdisplacement deposition. Journal of Physics and Chemistry of Solids2021;148:109722. https://doi.org/10.1016/j.jpcs.2020.109722.
[5]    Milazzo RG, Privitera SMS, Scalese S, Monforte F, Bongiorno C, Condorelli GG,et al. Ultralow loadingelectroless deposition of IrOx on nickel foam for efficient and stable wateroxidation catalysis. International Journal of Hydrogen Energy 2020;45:26583–94. https://doi.org/10.1016/j.ijhydene.2020.07.049.
[6]    Milazzo RG, Privitera SMS, Scalese S, Lombardo SA. Effect of morphology and mechanical stability ofnanometric platinum layer on nickel foam for hydrogen evolution reaction. Energies2019;12. https://doi.org/10.3390/en12163116.
[7]    Milazzo RG, Privitera SMS, D’Angelo D, Scalese S, Di Franco S, Maita F, et al. Spontaneous galvanic displacement of Pt nanostructureson nickel foam: Synthesis, characterization and use for hydrogen evolutionreaction. International Journal of Hydrogen Energy 2018:7903–10. https://doi.org/10.1016/j.ijhydene.2018.03.042.
[8]    Jia J, Seitz LC, Benck JD, Huo Y, Chen Y, Ng JWD, et al. Solar water splittingby photovoltaic-electrolysis with a solar-to-hydrogen efficiency over 30%. NatureCommunications 2016;7. https://doi.org/10.1038/ncomms13237.

Vi aspettiamo numerosi,

Saluti

SMeet – Comitato Organizzativo
smeet[@]imm.cnr.it
Web-page: https://hq.imm.cnr.it/smeet-science-sharing-meetings