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Molecules 2016, 21(10), 1392; doi:10.3390/molecules21101392

Application of Super-Amphiphilic Silica-Nanogel Composites for Fast Removal of Water Pollutants

1
Chemistry Department, College of Science, King Saud University, Riyadh 11541, Saudi Arabia
2
College of Science, King Saud University, Riyadh 11541, Saudi Arabia
*
Author to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 26 September 2016 / Revised: 13 October 2016 / Accepted: 15 October 2016 / Published: 19 October 2016
(This article belongs to the Section Molecular Diversity)
View Full-Text   |   Download PDF [4743 KB, uploaded 19 October 2016]   |  

Abstract

This work first reports the preparation of super-amphiphilic silica-nanogel composites to reduce the contact angle of water to increase the diffusion of pollutant into adsorbents. In this respect, the silica nanoparticles were encapsulated into nanogels based on ionic and nonionic polyacrylamides by dispersion polymerization technique. The morphologies and the dispersion stability of nanogel composites were investigated to clarify the ability of silica-nanogel composites to adsorb at different interfaces. The feasibility of silica polyacrylamide nanogel composites to act as a high-performance adsorbent for removal of methylene blue (MB) dye and heavy metals (Co2+ and Ni2+) from aqueous solution was investigated. The surface tension, contact angle, average pore size, and zeta potential of the silica-nanogel composites have been evaluated. The MB dye and heavy metal adsorption capacity achieved Qmax = 438–387 mg/g which is considerably high. The adsorption capacity results are explained from the changes in the morphology of the silica surfaces as recorded from scanning electron microscopy (SEM). View Full-Text
Keywords: silica; nanogel; composites; water purification; adsorption silica; nanogel; composites; water purification; adsorption
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Atta, A.M.; Al-Lohedan, H.A.; Tawfik, A.M.; Ezzat, A.O. Application of Super-Amphiphilic Silica-Nanogel Composites for Fast Removal of Water Pollutants. Molecules 2016, 21, 1392.

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