Cite this article: Wu, L., Zhang, L., Meng, T., Yu, F., Chen, J. and Ma, J. (2015). Facile Synthesis of 3D Amino-Functional Graphene-Sponge Composites Decorated by Graphene Nanodots with Enhanced Removal of Indoor Formaldehyde.
Aerosol Air Qual. Res.
15: 1028-1034. https://doi.org/10.4209/aaqr.2014.10.0237
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.
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.