In this work, graphene oxide/carboxymethylcellulose/alginate (GO/CMC/Alg) composite blends were prepared by a simple solution mixing-evaporation method. The resulting structure, thermal stability, and mechanical properties of the blends were investigated by wide-angle X-ray diffractometry, Fourier transform infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, thermogravimetric analysis, and mechanical testing. The obtained findings revealed that CMC, Alg, and graphene oxide were able to form a homogeneous mixture. When compared to a CMC/Alg blend, the incorporation of 1 wt% graphene oxide improved the tensile strength and Young's modulus by 40% and 1128%, respectively. In addition, the GO/CMC/Alg composite blend film showed a higher storage modulus than the CMC/Alg blend.
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| http://dx.doi.org/10.1016/j.carbpol.2014.03.037 | DOI Listing |
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Effective removal of Cu(II) from aqueous solution over graphene oxide encapsulated carboxymethylcellulose-alginate hydrogel microspheres: towards real wastewater treatment plants.
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Laboratoire de Matériaux, Catalyse et Valorisation des ressources naturelles (MaCaVa) URAC 24, Faculté des Sciences et Techniques, Université Hassan II, Casablanca, Morocco.
Article Synopsis
- Researchers developed and characterized graphene oxide (GO) encapsulated carboxymethyl cellulose-Alginate (CMC-Alg) hydrogel microspheres using the ionotropic gelation method, analyzing their structural properties with various techniques.
- The study found that these GO-embedded microspheres had significantly higher copper ion adsorption capacities compared to pure CMC-Alg beads, with the highest capacity observed at 64 mg/g for the 5% GO formulation.
- The adsorption process followed pseudo-second-order kinetics and conformed to the Langmuir adsorption isotherm, indicating that the graphene oxide-embedded CMC-Alg matrix is a promising material for removing metal ions from wastewater.
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