synergetic photocatalytic and adsorptive removals of metanil yellow using tio2/grass-derived cellulose/chitosan film composite

Chitosan (ch) and cellulose are the most abundant biopolymers which could be utilized for hazardous dye removal. by incorporating tio2 onto cellulose/ch matrix, our research aimed to achieve high metanil yellow removal by means of synergetic adsorption/photodegradation mechanism. the cellulose particles were extracted from wild grass (imperata cylindrica l.) to obtain grass-derived cellulose (gc). simple blending method was used to prepare tio2/gc/ch, in which the composition was determined by simple additive weighting method (saw). tio2/gc/ch was characterized by means of tensile strength test (also used for saw), fourier transform-infrared (ft-ir), x-ray diffraction (xrd), differential scanning calorimetry (dsc), and scanning electron microscopy (sem). metanil yellow removal using tio2/gc/ch works very well at acidic ph range. the removal follows the pseudo-second-order kinetic (r^2 = 0.997) and langmuir isotherm (r^2 = 0.998) modellings. high qm obtained from the metanil yellow removal under uv irradiation (qm = 171.527) proves the synergism between adsorption and photodegradation. the developed tio2/gc/ch could be potentially used in the wastewater treatment for azo dye removal