Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
26096 | Journal of Photochemistry and Photobiology A: Chemistry | 2016 | 11 Pages |
•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.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide