Removal of Heavy Metals by Poly(Vinyl Pyrrolidone)/Laponite Nanocomposite Hydrogels

Abstract:

Laponite cross-linked poly(vinyl pyrrolidone) (PVP) hydrogels were fabricated by in situ polymerization of vinyl pyrrolidone (NVP). Macroporous PVP/Laponite nanocomposite hydrogels were obtained by freeze drying of hydrogels, which exhibited faster adsorption kinetics than ambient-dried ones. We also investigated the influence of laponite content, initial ion concentration and pH of the solution on the adsorption capacity of PVP/Laponite hydrogels. Moreover, the PVP/Lapnoite hydrogels can further be fabricated into powder hydrogel samples, which can be used as a potential candidate of adsorbent for removal of heavy metals in water.

• Periodical: Advanced Materials Research (Volumes 631-632)
• Pages: 291-297
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.631-632.291
• Online since: January 2013
• Authors: Yan Ming Wang, Da Ji Shang, Zhong Wei Niu
• Keywords: Adsorption, Desorption, Laponite, Nanocomposite Hydrogel

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