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Effective photocatalytic degradation of Congo red dye using alginate/carboxymethyl cellulose/TiO2 nanocomposite hydrogel under direct sunlight irradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
26096 43934 2016 11 PDF Available
Title
Effective photocatalytic degradation of Congo red dye using alginate/carboxymethyl cellulose/TiO2 nanocomposite hydrogel under direct sunlight irradiation
Abstract

•Ba/alginate (Alg)/carboxymethyl cellulose (CMC) nanocomposite hydrogels were synthesized with encapsulation of TiO2-NPs.•Ba/Alg/CMC/TiO2 composite hydrogels exhibited excellent photocatalytic activity towards congo red dye under direct solar light irradiation.•Rate of reaction is pseudo-first order with rate constant of 7.96 × 10−3 min−1.•The recycling ability of Ba/Alg/CMC/TiO2 composite hydrogels were upto four cycle.

Nanocomposite hydrogels of barium ion crosslinked alginate/carboxymethyl cellulose (CMC) with encapulation of TiO2-NPs were synthesized sucessfully using dissipative convective method followed by freeze-drying procedure. As-prepared composite hydrogels were charecterized by different techniques such as Fourier Transform Infrared spectroscopy (FT-IR), Powder X-ray diffraction (PXRD), UV- Diffuse reflectance spectroscopy (UV-DRS), BET-Surface area study, Scanning Electron Microscopy with Energy Dispersive X-ray analysis (SEM-EDAX), Transmission Electron Microscopy (TEM) and mechanical strength study. Ba/Alg/CMC/TiO2 composite hydrogels exhibited excellent photocatalytic activity towards CR under direct solar light irradiation with pseudo-first order kinetics. The recycling ability of Ba/Alg/CMC/TiO2 composite hydrogels confirms that photocatalyst is highly photostable.

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Keywords
Hydrogels; Nanoparticles; Photocatalytic; Solar light; Composite
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Effective photocatalytic degradation of Congo red dye using alginate/carboxymethyl cellulose/TiO2 nanocomposite hydrogel under direct sunlight irradiation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 327, 15 August 2016, Pages 33–43
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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