Situmeang, Rudy T.M and Simanjuntak, Wasinton and Sembiring, Simon and Sembiring, Zipora (2019) LaCrO nano photocatalyst: the effect of calcination temperature on its cellulose conversion activity under UV-ray irradiation 3. Advances in Natural Sciences: Nanoscience and Nanotechnology.
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Abstract
Nano-photocatalysis offers an environmentally friendly method, low cost process, and easy handling operation. In addition, converting cellulose as an abundant waste of agricultural sideproduct into glucose and alcohol sugar is interesting and challenging. LaCrO nano photocatalyst was prepared using sol-gel and freeze-drying method. After the gelation and freeze-drying process, the precursors were subjected directly to the calcination treatment at 600, 700, and 800 °C, respectively. Then, the samples were subsequently characterized using x-ray diffraction (XRD), diffuse reflectance UV–vis spectroscopy (DRS), Fourrier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and transmission electron microscope (TEM). The results proved that LaCrO 3 3 crystalline phase is formed and its grain size is approximately 30 nm. DRS analysis also proved that band gap energy is affected by temperature calcination, and its value is around 2.9 eV. Its activity test said that the calcination temperature affected the conversion of cellulose. The cellulose conversion is more than 20% with the yield of alcohol sugar more than 600 ppm in 45 min exposure of the UV irradiation. Keywords: nano, cellulose, sol-gel, alcohol sugar, perovskite
| Item Type: | Article |
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| Subjects: | Q Science > QC Physics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Fisika |
| Depositing User: | SIMON SEMB |
| Date Deposited: | 22 Apr 2019 03:37 |
| Last Modified: | 22 Apr 2019 03:37 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/11217 |
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