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Volume 15, No. 3, June 2015, Pages 1028-1034 PDF(1.6 MB)  
doi: 10.4209/aaqr.2014.10.0237   

Facile Synthesis of 3D Amino-Functional Graphene-Sponge Composites Decorated by Graphene Nanodots with Enhanced Removal of Indoor Formaldehyde

Lirui Wu1, Lanxin Zhang1, Tao Meng1, Fei Yu2,3, Junhong Chen2,4, Jie Ma2

1 School of Mechanical Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
2 State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
3 School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Hai Quan Road, Shanghai 201418, China
4 Department of Mechanical Engineering, University of Wisconsin–Milwaukee, Milwaukee, WI 53211, USA

 

Highlights
  • Amino-functional graphene-sponge decorated by nanodots (G-GND/S) was synthesized.
  • G-GND/S-5 showed longer breakthrough time (~2137 min/g) for formaldehyde adsorption.
  • G-GND/S-5 showed adsorption ability (22.8 mg/g) for formaldehyde removal.
  • Amine groups were the most important factor for the adsorption efficiency.

Abstract

 

Amino-functional graphene-sponge composites decorated by graphene nanodots (G-GND/S) were synthesized. The preparation technology prevents the loss of nano-materials and reduces the amount of graphene addition. G-GND/S was used as adsorbents to remove formaldehyde, and then their performances for formaldehyde adsorption were evaluated by dynamic adsorption experiment. The adsorption properties of three different materials: sponge, graphene-sponge, and G-GND/S, the breakthrough time and adsorption capacity had been compared, the results showed G-GND/S had better formaldehyde adsorption properties with longer breakthrough time (~2137 min/g) and adsorption ability of formaldehyde (22.8 mg/g). Large amounts of amine groups were the most important factor for the strength enhancement of the adsorption efficiency.

 

 

Keywords: Graphene; Sponge; Nanodot; Formaldehyde.

 

 

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