Lim, Chin Woei (2020) Synthesis And Characterisation Of Cellulose/Nitrogen Doped Titanium Dioxide (N-Tio2) Composite Using Hydrothermal Method For Sonocatalytic Degradation Of Organic Dye. Final Year Project, UTAR.
Abstract
Cellulose /N-TiO2 composite was successfully synthesized via the hydrothermal synthesis route and characterised using X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray (SEM-EDX) and Fourier Transform infrared spectroscopy (FTIR). Anatase N-TiO2 was successfully deposited onto the extracted EFB cellulose fibre. An uneven layer of N-TiO2 was formed on the surface of the cellulose fibres with occasional cracks. Additionally, N-TiO2 aggregates and agglomerates were also present on the surface of the N-TiO2 layered cellulose fibres. Comparatively, NTiO2/Cellulose composite showed an unprecedented improvement in terms of the sonocatalytic degradation of Congo Red in comparison with pristine TiO2 and extracted EFB cellulose. In this work, parameter studies were also performed to determine the optimum amount cellulose on N-TiO2, hydrothermal synthesis temperature, catalyst loading, oxidant type, oxidant dosage and solution pH. The highest sonocatalytic degradation efficiency and COD removal of Congo Red were 91.74 % and 73.7%, respectively after 30 min under optimum conditions. The prescribed conditions were 20 ppm Congo Red, 1.0 g/L of N-TiO2/Cellulose with cellulose loading of 5 wt% that synthesized hydrothermally at 120 °C and the addition of 1.0 mM of potassium peroxymonosulfate under acidic condition.
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