Effect of nitrogen doping on the pore texture of carbon xerogels based on resorcinol-melamine-formaldehyde precursors

David Salinas-Torres, Alexandre Léonard, Vaios Stergiopoulos, Yan Busby, Jean-Jacques Pireaux, Nathalie Job

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

N-doped carbon xerogels (CXs) were synthesized from melamine-resorcinol-formaldehyde aqueous gels by evaporative drying and pyrolysis at 800 °C. The pore texture of these N-doped CXs ranged from micro-mesoporous to micro-macroporous depending on the initial pH of the precursors solution. For different pH values, while the specific surface area varied slightly from 500 to 600 m 2 g −1, the total void volume changed from 0.6 to 1.6 cm 3 g −1. Furthermore, N-doped CXs showed a wide interval of average pore diameters ranging from 19 to 1200 nm. The nitrogen amount in N-doped CXs varied from 4 to 11 wt. % and XPS analysis showed that nitrogen was mainly incorporated into the carbon network as pyridine or quaternary nitrogen groups. These results indicate that this doping approach is suitable to tune the pore texture, pore size and chemical composition by adjusting the initial pH value or the amount of nitrogen precursor. Taking into account the properties mentioned above, N-doped CXs can be tailored to find applications as adsorbents, catalyst supports, materials for energy generation and storage.

langue originaleAnglais
Pages (de - à)190-198
Nombre de pages9
journalMicroporous and Mesoporous Materials
Volume256
Les DOIs
étatPublié - 2017

Empreinte digitale

melamine
Xerogels
Melamine
xerogels
formaldehyde
Formaldehyde
Nitrogen
Carbon
textures
Textures
Doping (additives)
porosity
nitrogen
carbon
adsorbents
Catalyst supports
Specific surface area
Pyridine
Adsorbents
drying

Citer ceci

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title = "Effect of nitrogen doping on the pore texture of carbon xerogels based on resorcinol-melamine-formaldehyde precursors",
abstract = "N-doped carbon xerogels (CXs) were synthesized from melamine-resorcinol-formaldehyde aqueous gels by evaporative drying and pyrolysis at 800 °C. The pore texture of these N-doped CXs ranged from micro-mesoporous to micro-macroporous depending on the initial pH of the precursors solution. For different pH values, while the specific surface area varied slightly from 500 to 600 m 2 g −1, the total void volume changed from 0.6 to 1.6 cm 3 g −1. Furthermore, N-doped CXs showed a wide interval of average pore diameters ranging from 19 to 1200 nm. The nitrogen amount in N-doped CXs varied from 4 to 11 wt. {\%} and XPS analysis showed that nitrogen was mainly incorporated into the carbon network as pyridine or quaternary nitrogen groups. These results indicate that this doping approach is suitable to tune the pore texture, pore size and chemical composition by adjusting the initial pH value or the amount of nitrogen precursor. Taking into account the properties mentioned above, N-doped CXs can be tailored to find applications as adsorbents, catalyst supports, materials for energy generation and storage.",
keywords = "Carbon xerogels, Melamine, Nitrogen doping, Porous carbon, Texture",
author = "David Salinas-Torres and Alexandre L{\'e}onard and Vaios Stergiopoulos and Yan Busby and Jean-Jacques Pireaux and Nathalie Job",
year = "2017",
doi = "10.1016/j.micromeso.2017.08.004",
language = "English",
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Effect of nitrogen doping on the pore texture of carbon xerogels based on resorcinol-melamine-formaldehyde precursors. / Salinas-Torres, David; Léonard, Alexandre; Stergiopoulos, Vaios; Busby, Yan; Pireaux, Jean-Jacques; Job, Nathalie.

Dans: Microporous and Mesoporous Materials, Vol 256, 2017, p. 190-198.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - Effect of nitrogen doping on the pore texture of carbon xerogels based on resorcinol-melamine-formaldehyde precursors

AU - Salinas-Torres, David

AU - Léonard, Alexandre

AU - Stergiopoulos, Vaios

AU - Busby, Yan

AU - Pireaux, Jean-Jacques

AU - Job, Nathalie

PY - 2017

Y1 - 2017

N2 - N-doped carbon xerogels (CXs) were synthesized from melamine-resorcinol-formaldehyde aqueous gels by evaporative drying and pyrolysis at 800 °C. The pore texture of these N-doped CXs ranged from micro-mesoporous to micro-macroporous depending on the initial pH of the precursors solution. For different pH values, while the specific surface area varied slightly from 500 to 600 m 2 g −1, the total void volume changed from 0.6 to 1.6 cm 3 g −1. Furthermore, N-doped CXs showed a wide interval of average pore diameters ranging from 19 to 1200 nm. The nitrogen amount in N-doped CXs varied from 4 to 11 wt. % and XPS analysis showed that nitrogen was mainly incorporated into the carbon network as pyridine or quaternary nitrogen groups. These results indicate that this doping approach is suitable to tune the pore texture, pore size and chemical composition by adjusting the initial pH value or the amount of nitrogen precursor. Taking into account the properties mentioned above, N-doped CXs can be tailored to find applications as adsorbents, catalyst supports, materials for energy generation and storage.

AB - N-doped carbon xerogels (CXs) were synthesized from melamine-resorcinol-formaldehyde aqueous gels by evaporative drying and pyrolysis at 800 °C. The pore texture of these N-doped CXs ranged from micro-mesoporous to micro-macroporous depending on the initial pH of the precursors solution. For different pH values, while the specific surface area varied slightly from 500 to 600 m 2 g −1, the total void volume changed from 0.6 to 1.6 cm 3 g −1. Furthermore, N-doped CXs showed a wide interval of average pore diameters ranging from 19 to 1200 nm. The nitrogen amount in N-doped CXs varied from 4 to 11 wt. % and XPS analysis showed that nitrogen was mainly incorporated into the carbon network as pyridine or quaternary nitrogen groups. These results indicate that this doping approach is suitable to tune the pore texture, pore size and chemical composition by adjusting the initial pH value or the amount of nitrogen precursor. Taking into account the properties mentioned above, N-doped CXs can be tailored to find applications as adsorbents, catalyst supports, materials for energy generation and storage.

KW - Carbon xerogels

KW - Melamine

KW - Nitrogen doping

KW - Porous carbon

KW - Texture

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DO - 10.1016/j.micromeso.2017.08.004

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JO - Microporous and Mesoporous Materials

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