Pyridinic dominance nitrogen doped graphene by femtosecond pulsed laser deposition - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2016

Pyridinic dominance nitrogen doped graphene by femtosecond pulsed laser deposition

Résumé

Carbon-based materials represent an attractive prospective in fuel cell, electrochemical and biosensors applications [1]. Recently, nitrogen doped carbon materials have raised attention in research and development to enhance their practical applications. Especially, the direct controllable nitrogen doping in graphene synthesis routes have been an attracting area of research in catalysis and sensor applications [2,3]. Here, we present the direct growth of N doped graphene from ultrashort-pulsed laser deposition technique, based on previous works related to direct synthesis of graphene [4]. The N doped graphene has been synthesized by femtosecond pulsed laser deposition and characterized by different characterization techniques to study microstructural, surface morphology and chemical bonding information. The Multi-wavelength Raman spectroscopy confirms the doping in graphene network. The nitrogen doping in graphene decreases the 2D band intensity and the correlation length. The Raman mapping has confirmed the homogenous doping of nitrogen in the graphene network. By doping, the G peak is blue shifted by 4 cm-1 and the 2D peak is red shifted by 5 cm-1; which corresponds to the n-type doping behaviour and could open a bandgap in the graphene. The surface morphology has been studied by Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). The films shows the layered type structures and the low roughness values were estimated in both graphene and N doped graphene. The chemical composition and bonding have been studied by X-ray Photoelectron Spectroscopy (XPS), the nitrogen doping was estimated 3 at.%. The C1s spectra shifted to higher binding energy and the N1s spectra revealed three bonding structures, which are assigned to pyridinic-N, pyrrolic-N and graphitc-N type. The pyridinic-N dominance is high in our N doped graphene. The pyridinic-N dominance N doped graphene is attractive as a catalyst in Oxygen Reduction Reactions (ORR) to enhance their applications in fuel cells and electrochemical sensors. Compared to other carbon-based electrodes, N doped graphene will be a better electrode in electrochemical sensors. It can be used for the detection of hazardous pollutants and bio-pathogens at low concentrations. References (1) Fortgang, P.; Tite, T.; Barnier, V.; Zehani, N.; Maddi, C.; Lagarde, F.; Loir, A.-S.; Jaffrezic-Renault, N.; Donnet, C.; Garrelie, F.; et al. Robust Electrografting on Self-Organized 3D Graphene Electrodes. ACS Appl. Mater. Interfaces 2016, 8, 1424–1433. (2) Wu, J.; Ma, L.; Yadav, R. M.; Yang, Y.; Zhang, X.; Vajtai, R.; Lou, J.; Ajayan, P. M. Nitrogen-Doped Graphene with Pyridinic Dominance as a Highly Active and Stable Electrocatalyst for Oxygen Reduction. ACS Appl. Mater. Interfaces 2015, 7, 14763–14769. (3) Wang, Y.; Shao, Y.; Matson, D. W.; Li, J.; Lin, Y. Nitrogen-Doped Graphene and Its Application in Electrochemical Biosensing. ACS Nano 2010, 4, 1790–1798. (4) Tite, T.; Donnet, C.; Loir, A.-S.; Reynaud, S.; Michalon J.-Y.; Vocanson, F.; Garrelie, F.; Graphene-based textured surface by pulsed laser deposition as a robust platform for surface enhanced Raman scattering applications. Applied Physics Letters 104 (2014) 041912-1 – 0419012-4.

Domaines

Matériaux
Diamond 2016.pdf (110.66 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01416314 , version 1 (19-12-2016)

Identifiants

  • HAL Id : hal-01416314 , version 1

Citer

C Maddi, T Tite, V Barnier, A.-S. Loir, F S Bourquard, et al.. Pyridinic dominance nitrogen doped graphene by femtosecond pulsed laser deposition. International Conference on Diamond and Related Materials 2016, Sep 2016, Montpellier, France. ⟨hal-01416314⟩
177 Consultations
44 Téléchargements

Partager

Gmail Facebook X LinkedIn More