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Gnilitskyi I, Bellucci S, Marrani AG, Shepida M, Mazur A, Zozulya G, Kordan V, Babizhetskyy V, Sahraoui B, Kuntyi O. Femtosecond laser-induced nano- and microstructuring of Cu electrodes for CO 2 electroreduction in acetonitrile medium. Sci Rep 2023; 13:8837. [PMID: 37258634 DOI: 10.1038/s41598-023-35869-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/25/2023] [Indexed: 06/02/2023] Open
Abstract
The dependency of CO2 reduction rate in acetonitrile-Bu4NClO4 solution on cathodes, which were modified by laser induction of a copper surface, was studied. The topography of laser-induced periodic surface structures (LIPSS) → grooves → spikes was successively formed by a certain number of pulses. It was proved that for a higher number of laser pulses, the surface area of the copper cathode increases and preferred platy orientation of the copper surface on [022] crystallografic direction and larger fluence values increase. At the same time, the content of copper (I) oxide on the surface of the copper cathode increases. Also, the tendency to larger fluency values is observed. It promotes the increase of cathodic current density for CO2 reduction, which reaches values of 14 mA cm-2 for samples with spikes surface structures at E = - 3.0 V upon a stable process.
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Affiliation(s)
- Iaroslav Gnilitskyi
- Lviv Polytechnic National University, 12 Bandery Str., Lviv, 79013, Ukraine.
- "NoviNano Lab" LLC, 5 Pasternaka, Lviv, 79000, Ukraine.
- INFN-Laboratori Nazionali di Frascati, Via E. Fermi 54, 00044, Frascati, Italy.
| | - Stefano Bellucci
- INFN-Laboratori Nazionali di Frascati, Via E. Fermi 54, 00044, Frascati, Italy
| | - Andrea Giacomo Marrani
- Dipartimento di Chimica, Università di Roma "La Sapienza", p.le A. Moro 5, 00185, Rome, Italy
| | - Mariana Shepida
- Lviv Polytechnic National University, 12 Bandery Str., Lviv, 79013, Ukraine
| | - Artur Mazur
- Lviv Polytechnic National University, 12 Bandery Str., Lviv, 79013, Ukraine
| | - Galyna Zozulya
- Lviv Polytechnic National University, 12 Bandery Str., Lviv, 79013, Ukraine
| | - Vasyl Kordan
- Department of Inorganic Chemistry, Ivan Franko National University of Lviv, 6 Kyryla i Mefodiya Str., Lviv, 79005, Ukraine
| | - Volodymyr Babizhetskyy
- Department of Inorganic Chemistry, Ivan Franko National University of Lviv, 6 Kyryla i Mefodiya Str., Lviv, 79005, Ukraine
| | - Bouchta Sahraoui
- University of Angers, Photonics Laboratory of Angers LPhiA, SFR MATRIX, 2 Bd Lavoisier, 49045, Angers, France
| | - Orest Kuntyi
- Lviv Polytechnic National University, 12 Bandery Str., Lviv, 79013, Ukraine
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Surface Plasmon Resonance of Large-Size Ag Nanobars. MICROMACHINES 2022; 13:mi13040638. [PMID: 35457942 PMCID: PMC9025477 DOI: 10.3390/mi13040638] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/07/2022] [Accepted: 04/12/2022] [Indexed: 02/04/2023]
Abstract
Silver nanobars have attracted much attention due to their distinctive localized surface plasmon resonance (LSPR) in the visible and near-infrared regions. In this work, large-size Ag nanobars (length: 400~1360 nm) working at a longer-wavelength near-infrared range (>1000 nm) have been synthesized. By using the finite-difference time-domain (FDTD) simulation, the LSPR properties of a single large-size Ag nanobar are systematically investigated. The LSPR in Ag nanobar can be flexibly tuned in a wide wavelength range (400~2000 nm) by changing the bar length or etching the bar in the length direction. Our work provides a flexible way to fabricate nanoparticle arrays using large-size nanobars and throws light on the applications of large-size nanomaterials on wide spectral absorbers, LSPR-based sensors and nanofilters.
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Nykyruy Y, Mudry S, Shtablavyi I, Gnilitskyi I. Nanostructuring of Fe73.5Nb3Cu1Si15.5B7 amorphous alloy surface by laser-induced periodic structure formation. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-021-01866-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Impact of Ultrashort Laser Nanostructuring on Friction Properties of AISI 314 LVC. Symmetry (Basel) 2021. [DOI: 10.3390/sym13061049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Laser irradiation yields a powerful tool to modify the symmetry and asymmetry features of materials surfaces. In this paper, femtosecond laser-induced periodic surface structures were applied on stainless steel AISI 314, specially hardened by a low-vacuum carburizing procedure. Symmetry modifications in the surface’s morphology and chemistry before and after the laser treatment were investigated by SEM and EDS, respectively. Coefficient of friction (COF) was observed in dry sliding condition by using block-on-ring sliding test. The results show that COF values are substantially lower after laser-induced periodic surface structures (LIPSS) surface treatment.
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