Search results for "COPP"

Fractal-like Hierarchical CuO Nano/Microstructures for Large-Surface-to-Volume-Ratio Dip Catalysts

2022

Dip catalysts are attracting interest in both academia and industry for catalyzing important chemical reactions. These provide excellent stability, better recoverability, recyclability, and easy scale-up. Using the unique microstructures of leaf skeletons, we present a fractal-like hierarchical surface that can be used as a versatile and efficient dip catalyst. Copper oxide microcactuses with nanoscalar features were fabricated onto the Bauhinia racemosa leaf skeletons via a combination of physical vapor deposition, electroplating, and chemical oxidation methods. The coated leaf skeletons have a very high surface area, and the three-dimensional (3D) morphology allows the reactants to encoun…

Coppie miste in Italia e in Spagna. Uno studio sui fattori che favoriscono il senso di comunità dei partner stranieri

2013

Lo scopo del presente contributo è stato quello di analizzare come l’identificazione etnica (ingroup ed outgroup) e la discriminazione percepita (come straniero o come partner di coppia mista) siano legati al senso di comunità (SdC) dei partner stranieri delle famiglie interculturali residenti in Spagna e in Italia. I risultati mostrano che in entrambi i gruppi l’identificazione con il proprio gruppo etnico-culturale non è associata al SdC. Inoltre, l’aumento della discriminazione percepita come coppia mista porta ad una diminuzione del senso di comunità e della soddisfazione di vita. The aim of this paper was to analyze how ethnic identification (ingroup and outgroup) and perceived discrim…

La Cappella Musicale della Chiesa Madre di Enna: pratiche musicali e continuità stilistica fra 1700 e 1900

2006

A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures

2022

This work was supported by ERDF project No. 1.1.1.2/16/I/ 001, research application number 1.1.1.2/VIAA/4/20/743 "Development of nanomaterial-based electrochemical sensor for detection of hydrogen peroxide". Institute of Solid State Physics, University of Latvia as the Center of Excellence has received fund ing from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017 TeamingPhase2 under grant agree ment No. 739508, project CAMART2.

Introduzione

2019

L’idea di questo volume nasce dall’osservazione del panorama delle famiglie contemporanee, nonché del loro quotidiano, contraddistinto dalla propria specifica attualità e complessità. Il volume prende altresì le mosse da due questioni fondamentali nella riflessione delle scienze psicosociali sulla famiglia: l’identità e la struttura (come si definisce e da chi è composta) e il mutamento e i processi familiari (ovvero, come evolve la famiglia).

Copper Induces a Core Plasmon in Intermetallic Au(144,145)–xCux(SR)60 Nanoclusters

2015

The electronic structure and optical absorption spectra of intermetallic thiol-stabilized gold-copper clusters, having 144-145 metal atoms and 60 thiols, were studied by ab initio computations. The widely known icosahedral-based cluster model from the work of Lopez-Acevedo et al. (2009) was used, and clusters doped with one to 30 copper atoms were considered. When doped inside the metal core, copper induces dramatic changes in the optical spectrum as compared to the previously studied all-gold Au144(SR)60. An intense broad absorption peak develops in the range 535-587 nm depending on the amount of doping and doping sites. This result agrees very well with recent experiments by the Dass grou…

Single Crystal Sub‐Nanometer Sized Cu6(SR)6 Clusters: Structure, Photophysical Properties, and Electrochemical Sensing

2016

Organic ligand-protected metal nanoclusters have attracted extensively attention owing to their atomically precise composition, determined atom-packing structure and the fascinating properties and promising applications. To date, most research has been focused on thiol-stabilized gold and silver nanoclusters and their single crystal structures. Here the single crystal copper nanocluster species (Cu6(SC7H4NO)6) determined by X-ray crystallography and mass spectrometry is presented. The hexanuclear copper core is a distorted octahedron surrounded by six mercaptobenzoxazole ligands as protecting units through a simple bridging bonding motif. Density functional theory (DFT) calculations provide…

Influence of soil organic status on the dynamics and impact of copper on microbial communities in a vineyard soil

2009

International audience

Oxygen Transfer from Trimethylamine N-oxide to CuI Complexes Supported by Pentanitrogen Ligands

2020

[N,N-bis(1-methyl-2-benzimidazolyl)methyl-N-(bis-2-pyridylmethyl)amine] ( L 1 ) and [N,N-bis(2-quinolylmethyl)-N-bis(2-pyridyl)methylamine] ( L 2 ) were employed to prepare Cu II  and Cu I  complexes for spectroscopic and structural characterization. [ L 1 Cu II (H 2 O)](NO 3 ) 2 and [ L 2 Cu II (NO 3 )]NO 3 have Jahn-Teller distorted octahedral geometries, and give rise to isotropic EPR spectra in frozen solution. [ L 1 Cu I (CH 3 CN)]OTf and [ L 2 Cu I (CH 3 CN)]OTf have distorted trigonal bipyramidal and tetrahedral solid-state structures, respectively. The N-donors display labile behavior in solution, based on variable-temperature 1 H NMR studies. Addition of trimethylamine N-oxide (Me …

La genitorialità nella coppia omoaffettiva

2020

Il saggio affronta il delicato tema della aspirazione alla genitorialità procreativa da parte delle coppie omoaffettive nel nostro ordinamento alla luce dei divieti legislativi e del diritto vivente, considerati nel quadro dei principi costituzionali di riferimento. Indica argomenti e possibili soluzioni ermeneutiche per affermare un diritto alla genitorialità e per offrire adeguata copertura giuridica alla posizione del nato. The essay deals with the delicate issue of the aspiration to procreative parenthood by homosexual couples in our legal system in the light of the relevant legislative prohibitions and the recent case-law, considered within the framework of the constitutional principle…