Kanakaraju, Devagi and Muhamad Hazim, Ya and Lim, Ying-Chin and Pace, Andrea (2020) Combined Adsorption/Photocatalytic dye removal by copper-titania-fly ash composite. Surfaces and Interfaces, 19 (100534). pp. 1-8. ISSN 2468-0230
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Abstract
Achieving both photocatalytic efficiency and adsorption capacity is essential to produce a highly efficient photocatalyst. This study fabricated a new photocatalyst by combining copper (Cu) doped titanium dioxide (TiO2) with fly ash (FA). The photocatalysts were synthesized using mild acid (acid-FA/Cu/TiO2), base (base-FA/ Cu/TiO2), and deionized water (rFA/Cu/TiO2) activated FA. EDX confirmed the inclusion of Cu in both Cu/TiO2 and FA/Cu/TiO2 composites. XRD analysis indicated the presence of the anatase form of TiO2 after Cu doping and incorporation into modified FA. All three FA/Cu/TiO2 composites demonstrated high absorption (UV and visible region) compared to their TiO2 and Cu/TiO2 counterparts based on the diffuse reflectance UV-Vis spectra. Complete removal of methyl orange under UV and 99.1% removal under visible light irradiation were attained using 1.5 g/L base-FA/Cu/TiO2. Both dark and irradiation phases demonstrated the synergistic role of adsorption TiO2 composites to ensure the removal of dye in water.
| Item Type: | Article |
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| Uncontrolled Keywords: | Waste, Wastewater, Photocatalysis, Adsorption, Doping, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, research, Universiti Malaysia Sarawak. |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology Faculties, Institutes, Centres > Faculty of Resource Science and Technology |
| Depositing User: | Kanakaraju |
| Date Deposited: | 21 May 2020 09:35 |
| Last Modified: | 30 Mar 2021 03:43 |
| URI: | http://ir.unimas.my/id/eprint/29768 |
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