Susanto Arif Sardjono, Heru Suryanto, Jibril Maulana, Uun Yanuhar, Aminnudin, Irma K. Ningrum
TiO2 nanoparticles have properties as light absorbers to be used as light catalysts or solar cells. This study aimed to determine the effect of adding TiO2 nanoparticles to the structure and morphology of bacterial cellulose-based membranes produced from pineapple peel waste. The research was conducted by producing pellicles from pineapple peel extract. The pellicle was then disintegrated in 6 cycles using a high-pressure homogenizer at 150 bar. TiO2 variations were 0.5%, 1.0%, 1.5%, 2.0%, and 2.5%wt. They were sonicated and dried in an oven for 8 hours at 60°C. The structure was analyzed using XRD, and SEM observed morphology. The results showed that in the BC membrane with additional TiO2, a new peak occurred on the diffractogram at 2θ = 25.05°. It indicated the presence of TiO2 nanoparticles in the membrane. The diffraction peak occurred at 22.49° indicating that the cellulose belonged to Iβ cellulose. Additional 0% to 1% of TiO2 increased the membrane crystallinity index from 81.35% to 81.52%. The membrane crystallinity index decreased after an additional 1% TiO2, valuing 81.52% to 80.16% in the 2.5% sample. The membrane surface morphology showed that the TiO2 nanoparticles were still agglomerated and not evenly distributed on the BC membrane. © 2023 American Institute of Physics Inc.. All rights reserved.
Center of Excellence for Cellulose Composite (CECCom), Department of Mechanical Engineering, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Centre of Advanced Material for Renewable Energy (CAMRY), Jl. Semarang 5, Malang, 65145, Indonesia; Department of Waters Resources Management, Faculty of Fisheries and Marine Sciences, Universitas Brawijaya, Jl. Veteran Malang, East Java, Indonesia; Department of Chemistry, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia