| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Praus, Petr
Charles University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2021Tailoring the stoichiometry of C 3 N 4 nanosheets under electron beam irradiationcitations
- 2021Tailoring the stoichiometry of C3N4 nanosheets under electron beam irradiation
- 2021Tailoring the stoichiometry of C3N4 nanosheets under electron beam irradiationcitations
- 2020Deciphering the effect of traps on electronic charge transport properties of methylammonium lead tribromide perovskitecitations
- 2014ZnS/MMT nanocomposites : the effect of ZnS loading in MMT on the photocatalytic reduction of carbon dioxidecitations
- 2014Photocatalytic and photochemical decomposition of N2O on ZnS-MMT Catalystcitations
- 2013Nanocomposite of montmorillonite and silver nanoparticles: Characterization and application in catalytic reduction of 4-nitrophenolcitations
- 2011CdS nanoparticles deposited on montmorillonite: preparation, characterization and application for photoreduction of carbon dioxidecitations
- 2010Preparation and characterization of ZnS nanoparticles deposited on montmorillonitecitations
- 2010Adsorption of zinc and copper ions on natural and ethylenediamine modified montmorillonite
Places of action
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article
Tailoring the stoichiometry of C3N4 nanosheets under electron beam irradiation
Abstract
<p>Two-dimensional polymeric graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) is a low-cost material with versatile properties that can be enhanced by the introduction of dopant atoms and by changing the degree of polymerization/stoichiometry, which offers significant benefits for numerous applications. Herein, we investigate the stability of g-C<sub>3</sub>N<sub>4</sub>under electron beam irradiation inside a transmission electron microscope operating at different electron acceleration voltages. Our findings indicate that the degradation of g-C<sub>3</sub>N<sub>4</sub>occurs with N species preferentially removed over C species. However, the precise nitrogen group from which N is removed from g-C<sub>3</sub>N<sub>4</sub>(C-N-C, NH or -NH<sub>2</sub>) is unclear. Moreover, the rate of degradation increases with decreasing electron acceleration voltage, suggesting that inelastic scattering events (radiolysis) dominate over elastic events (knock-on damage). The rate of degradation by removing N atoms is also sensitive to the current density. Hence, we demonstrate that both the electron acceleration voltage and the current density are parameters with which one can use to control the stoichiometry. Moreover, as N species were preferentially removed, thed-spacing of the carbon nitride structure increased. These findings provide a deeper understanding of g-C<sub>3</sub>N<sub>4</sub></p>