TEMPO-oxidized cellulose nanofibers/TiO 2 nanocomposite as new adsorbent for Brilliant Blue dye removal
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TEMPO‑oxidized cellulose nanofibers/TiO2 nanocomposite as new adsorbent for Brilliant Blue dye removal Zehbah Ali Al‑Ahmed1 · Abeer A. Hassan2 · Sahar M. El‑Khouly3 · Shaymaa E. El‑Shafey3 Received: 14 June 2019 / Revised: 3 October 2019 / Accepted: 10 December 2019 © Springer-Verlag GmbH Germany, part of Springer Nature 2019
Abstract In this article, TEMPO-oxidized cellulose nanofiber (TEMPO-CNF) prepared from bagasse was described and utilized as a sustainable material for the preparation of new nanocomposites. TiO2 nanoparticles were synthesized by in situ precipitation in the presence of TEMPO-CNF. The prepared nanocomposite, TEMPO-CNF/ TiO2, was characterized by using FT-IR, XRD, TGA, SEM, and EDX analysis. The results proved that homogenous spherical TiO2 nanoparticles were formed with the particles of TEMPO-CNF. TEMPO-CNF/TiO2 nanocomposite was examined as an adsorbent for Brilliant Blue (BB) adsorption. The highest BB removal efficiency was observed at pH 7, the adsorption process is well described by pseudo-secondorder and Langmuir adsorption model, and the maximum adsorption capacity is 162 mg/g. Our results proved that the TEMPO-CNF/TiO2 nanocomposite could be used for the removal of BB from aqueous solutions. Keywords Cellulose nanofibers · Titanium oxide · Nanocomposite · Water purification
* Shaymaa E. El‑Shafey [email protected] Zehbah Ali Al‑Ahmed [email protected] Abeer A. Hassan [email protected] Sahar M. El‑Khouly [email protected] 1
Department of Chemistry, College’s of Art and Sciences ‑Dhahran Aljounb, King Khalid University, Abha, Saudi Arabia
2
Chemistry Department, Faculty of Science for Girls, Ain Shams University, Cairo, Egypt
3
Surface Chemistry and Catalysis Laboratory, Physical Chemistry Department, National Research Center, NRC, Dokki, Giza, Egypt
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Vol.:(0123456789)
Polymer Bulletin
Introduction Environmental contamination by organic and inorganic colorants bearing wastewater worldwide concern is required to be addressed. Various industries such as textile dying, cosmetics, pigments and paints yield a lot of fluid that contain organic colorants. These wastes are wealthy in dyes, and 10–15% of these dyes might be found in modern effluents. These organic released dyes have high toxicity, slow biodegradation [1], high resistant concerning oxidizing agents, and light and heat, and henceforth, they danger the amphibian and human life [2]. Adsorption technique has been presented as an environmentally friendly, cost-effective and easy regeneration method for the removal of heavy metals and organic dyes [3, 4]. Numerous endeavors have been cultivated to grow new practical adsorbents for lessening the grouping of the contaminants to allowable dimensions [5–7]. Polysaccharides have been modified for developing novel nanocomposite materials for water treatment. Various nanocomposites, e.g., carboxymethyl cellulose/Fe3O4 [8], carboxymethyl cellulose/hydroxyapatite [9], cellulose/montmorillonite [10] and graphene oxides/microcrystalline cellulose aerogels
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