Preparation and application of porous nitrogen-doped graphene obtained by co-pyrolysis of lignosulfonate and graphene oxide. (January 2015)

• Record Type: Journal Article
• Authors: Zhao, Hai-Bo; Wang, Wen-Dong; Lü, Qiu-Feng; Lin, Ting-Ting; Lin, Qilang; Yang, Haijun
• Is Part Of: Bioresource technology. Volume 176(2015)
• Page Start: 106
• Page End: 111
• Publication Date: 2015-01
• Subjects: Lignosulfonate -- Pyrolysis -- Nitrogen-doped -- Porous graphene -- Supercapacitor; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2014.11.035
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Nitrogen-doped porous graphene was fabricated by co-pyrolysis of LS, GO and urea. Lignosulfonate performed as both dispersant and porogen in the co-pyrolysis process. The porous structure of graphene resulted from the pyrolysis of lignosulfonate. Abstract: Nitrogen-doped graphene with in-plane porous structure was fabricated by simple co-pyrolysis of lignosulfonate and graphene oxide in the presence of urea. Lignosulfonate first performs as a dispersant adsorbed on the surface of graphene oxide to prevent the aggregation of graphene oxide sheets for preparing homogeneous nitrogen-containing precursor, and then acts as a porogen to render graphene sheets with nanopores in the pyrolysis process of the nitrogen-containing precursor. Urea was used as a nitrogen source to incorporate nitrogen atoms into graphene basal plane. The special nanoporous structure combined with nitrogen content of 7.41 at.% endows the nitrogen-doped graphene electrode material with super capacitance up to 170 F g −1, high rate performance, and excellent cycling stability.