ACADSTAFF UGM
| Title | : | Remazol Black Decontamination Study Using a Novel One-Pot Synthesized S and Co Co-Doped TiO2 Photocatalyst |
| Author | : |
RISKA DWIYANNA (1) Prof. Drs. Roto, M.Eng, Ph.D. (2) Prof. Dr. Endang Tri Wahyuni, M.S. (3) |
| Date | : | 26 2021 |
| Keyword | : | Cobalt; ,decolorization,photocatalyst,remazol black,sulphur,TiO2 Cobalt; ,decolorization,photocatalyst,remazol black,sulphur,TiO2 |
| Abstract | : | This study investigated the decolorization of Remazol Black (RBB) using a TiO2 photocatalyst modified by S and Co co-doped TiO2 (S-Co-TiO2 ) from a single precursor. X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and UV–Vis specular reflectance spectroscopy were used to characterize the photocatalysts. The results revealed that the band-gap energy of the doped and co-doped TiO2 decreased, with the S-Co-TiO2 8% showing the greatest one, and was found to be 2.78 eV while undoped TiO2 was 3.20 eV. The presence of S and Co was also identified through SEM-EDX. An activity study on RBB removal revealed that the S-Co-TiO2 photocatalyst showed the best result compared to undoped TiO2 , S-TiO2 , and Co-TiO2 . The S-Co-TiO2 8% photocatalyst reduced RBB concentration (20 mg L−1 ) up to 96?ter 90 min of visible light irradiation, whereas S-TiO2 , Co-TiO2 , and undoped TiO2 reduced it to 89%, 56%, and 39%, respectively. A pH optimization study showed that the optimum pH of RBB decolorization by S-Co-TiO2 was 3.0, the optimum mass was 0.6 g L−1 , and reuse studies show that S-Co-TiO2 8% has the potential to be used repeatedly to remove colored pollutants. The results obtained indicate that the modification of S, Co co-doped titania synthesized using a single precursor has been successfully carried out and showed excellent characteristics and activity compared to undoped or doped TiO2 . |
| Group of Knowledge | : | Kimia |
| Original Language | : | English |
| Level | : | Internasional |
| Status | : |
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jurnal_2107591_b349fa9aa27c88f3e13db033e6c672fd.pdf
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