| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Ścigała, Aleksandra
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (1/1 displayed)
Places of action
| Organizations | Location | People |
|---|
article
Copper nitride/silver nanostructures synthesized via wet chemical reduction method for the oxygen reduction reaction
Abstract
<jats:title>Abstract</jats:title><jats:p>This work presents attempts to synthesize silver-doped copper nitride nanostructures using chemical solution methods. Copper(II) nitrate and silver(I) nitrate were used as precursors and the oleylamine as a reducing and capping agent. Homogeneous Cu<jats:sub>3</jats:sub>N/Ag nanostructures with a diameter of ~ 20 nm were obtained in a one-pot synthesis by the addition of the copper(II) salt precursor to the already-synthesized silver nanoparticles (Ag NPs). Synthesis in a two-pot procedure performed by adding Ag NPs to the reaction medium of the Cu<jats:sub>3</jats:sub>N synthesis resulted in the formation of a Cu<jats:sub>3</jats:sub>N@Ag nanocomposite, in which Ag NPs are uniformly distributed in the Cu<jats:sub>3</jats:sub>N matrix. The morphology, structure, and chemical composition of the obtained specimens were studied by TEM, XRD, XPS, and FT-IR methods, while optical properties using UV–Vis spectroscopy and spectrofluorimetry. The band gap energy decreased for Cu<jats:sub>3</jats:sub>N/Ag (<jats:italic>E</jats:italic><jats:sub><jats:italic>g</jats:italic></jats:sub> = 2.1 eV), in relation to pure Cu<jats:sub>3</jats:sub>N (<jats:italic>E</jats:italic><jats:sub><jats:italic>g</jats:italic></jats:sub> = 2.4. eV), suggesting the insertion of Ag atoms into the Cu<jats:sub>3</jats:sub>N crystal lattice. Additionally, Cu<jats:sub>3</jats:sub>N and Cu<jats:sub>3</jats:sub>N/Ag nanostructures were loaded on graphene (GNP) and tested as a catalyst in the oxygen reduction reaction (ORR) by cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The Cu<jats:sub>3</jats:sub>N/Ag-modified GNP hybrid material revealed catalytic activity superior to that of Cu<jats:sub>3</jats:sub>N-based GNP hybrid material and pure GNP, comparable to that of a commercial Pt/C electrode.</jats:p><jats:p><jats:bold>Graphical Abstract</jats:bold></jats:p>