Synergistic Effect of Titanium Dioxide (TiO2) and Ionizing Radiation on Thermal and Mechanical Properties of Carboxymethyl Cellulose (CMC) for Potential Application in Removal of Basic Dye from Wastewater

Abstract

Carboxymethyl cellulose (CMC)/titanium dioxide (TiO2) was prepared using gamma irradiation at different doses. Carboxymethyl cellulose was used as a matrix and TiO2 in different contents was added (0.25, 0.5, 1, 1.5 wt %) as a filler. The polymer composite film were irradiated at doses of 5, 10 and15 kGy using 60 Co γ-ray to form crosslinked network structure. The prepared composite films were described by different diagnostic procedures including X-ray diffractometer, scanning electron microscope (SEM), FTIR as well as thermal and mechanical properties measurements. CMC/TiO2 composite films was used for removal of basic Violet 7 dye. The adsorption of the dye follows the Langmuir model a with chemical monolayer adsorption behavior. Adsorption kinetic of dyes was set up to be regular to pseudo second order kinetic model. The results showed that the prepared composite films significantly removed this basic violet 7 dye with maximum absorption capacity (123.6 mg/g).

Fabrication of a pH-responsive magnetic nanocarrier based on carboxymethyl cellulose-aminated graphene oxide for loading and in-vitro release of curcumin

“…The non-linear form of pseudo-first-order (PFO), pseudo-second-order (PSO), and intra-particle diffusion (IPD) models [46,47] was adopted to analyze the adsorption kinetic data of CUR onto the CoFe2O4/GO-ADH-CMC at three dosages of 0.25, 0.5, and 1.0 mg L −1 . The kinetic equations of the PFO and PSO models are as follows, respectively:…”