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Open AccessArticle

Reactive Mesoporous pH-Sensitive Amino-Functionalized Silica Nanoparticles for Efficient Removal of Coomassie Blue Dye

1
Surfactants Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
2
Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1721; https://doi.org/10.3390/nano9121721
Received: 20 October 2019 / Revised: 21 November 2019 / Accepted: 28 November 2019 / Published: 2 December 2019
In this work, new smart mesoporous amine-functionalized silica nanoparticles were prepared from hydrolyzing microgels based on N-isopropyl acrylamide-co-vinyltrimethoxysilane microgels with tetraethoxysilicate and 3-aminopropyltriethoxysilane by sol-gel method. The thermal stability and Fourier transform infrared were used to determine the amine contents of the silica nanoparticles. The pH sensitivity of the synthesized silica nanoparticles in their aqueous solutions was evaluated by using dynamic light scattering (DLS) and zeta potential measurements. The porosity of the amine-functionalized silica nanoparticles was evaluated from a transmittance electron microscope and Brunauer-Emmett-Teller (BET) plot. The results have positively recommended the pH-sensitive amine-functionalized silica nanoparticles as one of the effective nano-adsorbent to remove 313 mg·g−1 of CB-R250 water pollutant.
Keywords: nano-adsorbent; amino-functionalized silica; nanoparticles; mesoporous; Coomassie blue nano-adsorbent; amino-functionalized silica; nanoparticles; mesoporous; Coomassie blue
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MDPI and ACS Style

Sabeela, N.I.; Almutairi, T.M.; Al-Lohedan, H.A.; Ezzat, A.O.; Atta, A.M. Reactive Mesoporous pH-Sensitive Amino-Functionalized Silica Nanoparticles for Efficient Removal of Coomassie Blue Dye. Nanomaterials 2019, 9, 1721.

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