R. Rahmi - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Kopelma Darussalam, Indonesia
S. Lubis - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Kopelma Darussalam, Indonesia
N. Az-Zahra - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Kopelma Darussalam, Indonesia
K. Puspita - Department of Chemistry Education, Faculty of Education and Teacher Training, Universitas Syiah Kuala, Kopelma Darussalam, Indonesia
M. Iqhrammullah - Graduate School of Mathematics and Applied Sciences, Universitas Syiah Kuala, Kopelma Darussalam, Indonesia

Chitosan (CH) and cellulose are the most abundant biopolymer which can be utilized for hazardous dye removal. By incorporating TiO۲ onto cellulose/CH matrix, our research aims to achieved higher metanil yellow removal by means of synergetic adsorption/photodegradation mechanisms. The cellulose particles were extracted from wild grass (Imperata cylindrica L.) to obtain grass-derived cellulose (GC). Simple blending method was used to prepare TiO۲/GC/CH, in which the composition was determined by simple additive weighting method (SAW). TiO۲/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 TiO۲/GC/CH work the best at acidic pH range. The removal follows the pseudo-second-order kinetic (R۲ = ۰.۹۹۶۹۹) and Langmuir isotherm (R۲ = ۰.۹۹۷۸۶) modellings. Higher qm obtained from the metanil yellow removal under UV irradiation (qm = ۱۷۱.۵۲۶۶) proves the synergism between adsorption and photodegradation.

photocatalyst, Nanoparticle, Langmuir, Azo dye, Pseudo-second-order, Simple Additive Weighting Method