Solvent dispersible nanocomposite based on Reduced Graphene Oxide and in-situ decorated gold nanoparticles
| Autor: | Chiara Ingrosso, Nicoletta Depalo, Angela Agostiano, A. Disha, Elisabetta Fanizza, Marinella Striccoli, Annamaria Panniello, M. L. Curri, Giuseppe Valerio Bianco, Michela Corricelli |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nanostructure Nanocomposite Graphene Oxide 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Nanocomposites 0104 chemical sciences law.invention chemistry.chemical_compound Colloid chemistry Chemical engineering Colloidal gold law RGO General Materials Science Au nanoparticles 0210 nano-technology Hybrid material |
| Zdroj: | Carbon 152 (2019): 777–787. doi:10.1016/j.carbon.2019.06.070 info:cnr-pdr/source/autori:Ingrosso, C.; Corricelli, M.; Disha, A.; Fanizza, E.; Bianco, G. V.; Depalo, N.; Panniello, A.; Agostiano, A.; Striccoli, M.; Curri, M. L./titolo:Solvent dispersible nanocomposite based on Reduced Graphene Oxide in situ decorated with gold nanoparticles/doi:10.1016%2Fj.carbon.2019.06.070/rivista:Carbon/anno:2019/pagina_da:777/pagina_a:787/intervallo_pagine:777–787/volume:152 |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2019.06.070 |
| Popis: | A facile in situ colloidal approach is reported to synthesize a novel hybrid nanocomposite formed of 3,4-dimethylbenzenethiol (DMBT)-capped Au NPs, decorating flakes of 1-pyrene-carboxylic acid (PCA) functionalized Reduced Graphene Oxide (RGO). In the nanocomposite, the Au NPs and RGO sheets are anchored by means of the aromatic PCA linker and the DMBT capping ligand, both ensuring electronic coupling due to particle/RGO and interparticle π-π interactions, respectively. The short aromatic thiol has been selected to i. yield additional binding sites for the NPs to the PCA-RGO surface, ii. potentially enhance electron conductivity and promote charge transfers, and iii. enable dispersibility in organic solvents. The role of the synthetic parameters on the resulting Au NPs morphology and on their organization onto the PCA-RGO sheets has been comprehensively investigated in order to elucidate the mechanism underlying the in situ NPs formation. Organic dispersions of the PCA-RGO flakes, densely and uniformly decorated with a multilayer network of DMBT-coated Au NPs, 2–3 nm in size, have been achieved, thus overcoming limitations previously reported for similar hybrid materials. The prepared nanostructures are attractive functional platforms for future FETs and (photo)electrochemical (bio)sensors, (photo)catalysis, photodetectors, memory devices and solar cells. |
| Databáze: | OpenAIRE |
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