title: Porous graphene oxide/carboxymethyl cellulose monoliths, with high metal ion adsorption.
abstract: Orderly porous graphene oxide/carboxymethyl cellulose (GO/CMC) monoliths were prepared by a unidirectional freeze-drying method. The porous monoliths were characterized by Fourier transform infrared spectra, X-ray diffraction and scanning electron microscopy. Their properties including compressive strength and moisture adsorption were measured. The incorporation of GO changed the porous structure of the GO/CMC monoliths and significantly increased their compressive strength. The porous GO/CMC monoliths exhibited a strong ability to adsorb metal ions, and the Ni(2+) ions adsorbed on GO/CMC monolith were reduced by NaBH4 to obtain Ni GO/CMC monolith which could be used as catalyst in the reduction of 4-nitrophenol to 4-aminophenol. Since CMC is biodegradable and non-toxic, the porous GO/CMC monoliths are potential environmental adsorbents.
authors.affiliation: Huanhu Hospital, Tianjin 300060, PR China.
authors.forename: Yongli
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yue
authors.initials: Y
authors.lastname: Liu
authors.forename: Xinrui
authors.initials: X
authors.lastname: Wang
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Sun
authors.forename: Junkui
authors.initials: J
authors.lastname: Ma
authors.forename: Tao
authors.initials: T
authors.lastname: Wu
authors.forename: Fubao
authors.initials: F
authors.lastname: Xing
authors.forename: Jianping
authors.initials: J
authors.lastname: Gao
mesh_terms: D000327:Adsorption; D000627:Aminophenols / Q000737:chemistry; D002266:Carboxymethylcellulose Sodium / Q000737:chemistry*; D002384:Catalysis; D019245:Compressive Strength; D006108:Graphite / Q000737:chemistry*; D019216:Metals, Heavy / Q000737:chemistry* / Q000302:isolation & purification; D009596:Nitrophenols / Q000737:chemistry; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D016062:Porosity; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D000627:Aminophenols; D019216:Metals, Heavy; D009596:Nitrophenols; D010087:Oxides; D014874:Water Pollutants, Chemical; D006108:Graphite; D002266:Carboxymethylcellulose Sodium; C026729:4-aminophenol; C024836:4-nitrophenol
keywords: Carboxymethyl cellulose; Graphene oxide; Metal ion adsorption; Porous monolith