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

Category: Control Techniques and Strategy

Volume: 15 | Issue: 3 | Pages: 1028-1034
DOI: 10.4209/aaqr.2014.10.0237
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Lirui Wu1, Lanxin Zhang1, Tao Meng1, Fei Yu2,3, Junhong Chen2,4, Jie Ma 2

  • 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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