From grape bagasse to graphene-like porous carbon nanosheets for CO2 capture

Graphene-based materials have increasingly attracted attention in recent years. It is a material is recognized worldwide due to its numerous applications in several sectors. However, graphene production involves several challenges: scalability, high costs, and high-quality production. This study synthesized graphene-like porous carbon nanosheets (GPCNs) through a thermochemical process under a nitrogen atmosphere using grape bagasse as a precursor. Three temperatures (700, 800, and 900 ºC) of the pyrolysis process were studied. Chemical graphitization and activation were used to form high-specific surface area materials: FeCl3.6H2O(aq) and ZnCl2(s) in a simultaneous activation-graphitization (SAG) method. The materials obtained (GPCN700, GPCN800, and GPCN900) were compared to previously produced chars (C700, C800, and C900). A high specific surface area and total pore volume were obtained for GPCN materials, and GPCN900 presented the highest values: 1062.7 m2g−1 and 0.635 cm3 g−1, respectively. The GPCN and char materials were classified as mesoporous and applied as adsorbents for CO2(g). The GPCN800 presented the best CO2(g) adsorbent, with a CO2(g) adsorption capacity of 168.71 mg g−1.

• Autores: Sebem da Silva, Caroline Maria; Oliveira, Marcos; Manera, Christian; Godinho, Marcelo; Perondi, Daniele; Ahmad, Naushad; Nawaz, Asad; Dotto, Guilherme Luiz; Silva, Luis
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2023
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: eng
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/14075
• Acceso en línea: https://hdl.handle.net/11323/14075; https://repositorio.cuc.edu.co/
• Palabra clave: Carbon dioxide; Chars; Grape bagasse; Graphene-like porous carbon nanosheets; Pyrolysis
• Rights: closedAccess
• License: Atribución 4.0 Internacional (CC BY 4.0)