Nadhra Hidayah binti Mohd Halim and Mohd Hasmizam Razali 2019. Methyl Orange Degradation using TiO2 Powder and Immobilized TiO2 Photocatalysts. Universiti Malaysia Terengganu Journal of Undergraduate Research. 1, 4 (Oct. 2019), 61–66. DOI:https://doi.org/10.46754/umtjur.v1i4.92.