Low temperature detection of nitric oxide by CuO nanoparticles synthesized by pulsed laser ablation

Censabella, Maria; Iacono, Valentina; Scandurra, Antonino; Moulaee, Kaveh; Neri, G.; Ruffino, F.; Mirabella, Salvatore

doi:10.1016/j.snb.2022.131489

Cited by 26 publications

(13 citation statements)

References 48 publications

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“…The NPs are formed by very thin nanowalls which are bound together. The structure of Cu(OH) 2 NPs was studied by XRD and the results were reported in a previous paper [ 30 ]. XRD revealed the presence of Cu° and Cu 2 O species.…”

Section: Resultsmentioning

confidence: 99%

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Alkaline Electro-Sorption of Hydrogen Onto Nanoparticles of Pt, Pd, Pt80Pd20 and Cu(OH)2 Obtained by Pulsed Laser Ablation

et al. 2023

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Recently, hydrogen evolution reaction (HER) in alkaline media has received a renewed interest both in the fundamental research as well as in practical applications. Pulsed Laser Ablation in Liquid (PLAL) has been demonstrated as a very useful technique for the unconventional preparation of nanomaterials with amazing electro-catalyst properties toward HER, compared to those of nanomaterials prepared by conventional methods. In this paper, we compared the electro-sorption properties of hydrogen in alkaline media by Pt, Pd, Pt80Pd20, and Cu(OH)2 nanoparticles (NPs) prepared by PLAL. The NPs were placed onto graphene paper (GP). Noble metal particles have an almost spherical shape, whereas Cu(OH)2 presents a flower-bud-like shape, formed by very thin nanowalls. XPS analyses of Cu(OH)2 are compatible with a high co-ordination of Cu(II) centers by OH and H2O. A thin layer of perfluorosulfone ionomer placed onto the surface of nanoparticles (NPs) enhances their distribution on the surface of graphene paper (GP), thereby improving their electro-catalytic properties. The proposed mechanisms for hydrogen evolution reaction (HER) on noble metals and Cu(OH)2 are in line with the adsorption energies of H, OH, and H2O on the surfaces of Pt, Pd, and oxidized copper. A significant spillover mechanism was observed for the noble metals when supported by graphene paper. Cu(OH)2 prepared by PLAL shows a competitive efficiency toward HER that is attributed to its high hydrophilicity which, in turn, is due to the high co-ordination of Cu(II) centers in very thin Cu(OH)2 layers by OH- and H2O. We propose the formation of an intermediate complex with water which can reduce the barrier energy of water adsorption and dissociation.

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Section: Resultsmentioning

confidence: 99%

“…The duration of ablation was 8 min. More details of the experimental setup and the parameters used in the NPs preparation were reported in previous works [ 20 , 30 ]. Electrodes were fabricated using pieces of GP of 1 cm × 3 cm.…”

Section: Methodsmentioning

confidence: 99%

Alkaline Electro-Sorption of Hydrogen Onto Nanoparticles of Pt, Pd, Pt80Pd20 and Cu(OH)2 Obtained by Pulsed Laser Ablation

et al. 2023

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“…Using modern nanosensors to detect different gases and liquids is now becoming a common practice [ 7 , 8 ]. Control over gaseous and liquid media is of great importance for both the reliable operation of many technological cycles and the protection of the environment [ 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Portable Device for Multipurpose Research on Dendritic Yanson Point Contacts and Quantum Sensing

et al. 2023

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Quantum structures are ideal objects by which to discover and study new sensor mechanisms and implement advanced approaches in sensor analysis to develop innovative sensor devices. Among them, one of the most interesting representatives is the Yanson point contact. It allows the implementation of a simple technological chain to activate the quantum mechanisms of selective detection in gaseous and liquid media. In this work, a portable device for multipurpose research on dendritic Yanson point contacts and quantum sensing was developed and manufactured. The device allows one to create dendritic Yanson point contacts and study their quantum properties, which are clearly manifested in the process of the electrochemical cyclic switchover effect. The device tests demonstrated that it was possible to gather data on the compositions and characteristics of the synthesized substances, and on the electrochemical processes that influence the production of dendritic Yanson point contacts, as well as on the electrophysical processes that provide information on the quantum nature of the electrical conductance of dendritic Yanson point contacts. The small size of the device makes it simple to integrate into a micro-Raman spectrometer setup. The developed device may be used as a prototype for designing a quantum sensor that will serve as the foundation for cutting-edge sensor technologies, as well as be applied to research into atomic-scale junctions, single-atom transistors, and any relative subjects.

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“…CuO is among the most promising multi-functional materials for different science and technological applications including gas sensing [1][2][3][4], biomedical [5], catalysis [6] and nanoenergetics [7][8][9][10][11][12][13]. Over the past two past decades, nanoenergetic materials have received a growing attention due to their rapid energy release rates, their use as additives in conventional energetic materials [14], and their possible use in microsystems based applications [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

First-principles investigation of CuO decomposition and its transformation into Cu2O

Jabraoui

Rouhani

Rossi

et al. 2022

Phys. Rev. Materials

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This paper reports on the mechanisms of CuO decomposition and its associated phase transformation into Cu2O, as a fundamental step of thermite materials reaction, where CuO serves as the oxidizer. Frenkel pair defects in perfect bulk CuO show extremely high formation energy (>4 eV) indicating that its decomposition initiates at defects/interfaces/surfaces, the latter being sensitive to surface orientation. In contrast to a variety of CuO surfaces ((111), ( 110), (101 ̅ )) exhibiting three-fold coordinated oxygen atoms, results show that oxygen vacancy formation requires higher disordered surfaces, such as the CuO(001), on which the vacancy formation activation energy is reduced to 1.31 eV. This leads to the exothermic formation of a chemisorbed O-O peroxy-bridge complex at the surface (-1.25 eV adsorption), that thermodynamically moderates the backreaction (vacancy annihilation). Further desorption of molecular oxygen necessitates an activation of 1.53 eV, compatible with CuO decomposition observed experimentally at 600 K (~second process duration). As a driving mechanism of oxygen release upon decomposition, migrations of the vacancy close to the surface and towards the bulk are determined for a number of crystalline directions and surface orientations and

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Low temperature detection of nitric oxide by CuO nanoparticles synthesized by pulsed laser ablation

Cited by 26 publications

References 48 publications

Alkaline Electro-Sorption of Hydrogen Onto Nanoparticles of Pt, Pd, Pt80Pd20 and Cu(OH)2 Obtained by Pulsed Laser Ablation

Alkaline Electro-Sorption of Hydrogen Onto Nanoparticles of Pt, Pd, Pt80Pd20 and Cu(OH)2 Obtained by Pulsed Laser Ablation

Portable Device for Multipurpose Research on Dendritic Yanson Point Contacts and Quantum Sensing

First-principles investigation of CuO decomposition and its transformation into Cu2O

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