Publications by authors named "Thi Viet Ha Luu"
This study attempted to improve the photocatalytic activity of zinc oxide (ZnO) semiconductors in the visible light region by introducing the co-doping of carbon (C) and tantalum (Ta) to ZnO (ZTC) using a simple hydrothermal method with the respective precursors. The obtained uniform ZTC nanoparticles with an average crystal size of 29.30 nm (according to Scherrer's equation) revealed a redshift with a decrease in bandgap () from 3.
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- Ta-doped ZnO (Ta-ZnO) nanomaterials were synthesized using a hydrothermal method at varying temperatures to enhance the photocatalytic degradation of methylene blue (MB) under visible light.
- The introduction of Ta significantly altered the crystal structure and optical properties of ZnO, resulting in a redshift in the optical absorption edge and improved blue light emission, suggesting that Ta-ZnO can effectively absorb visible light.
- The optimal synthesis temperature for achieving the highest photocatalytic efficiency was found to be 150 °C, with Ta-ZnO achieving degradation rates 2.5 times greater than undoped ZnO when tested under halogen light, and experiments were also conducted under simulated and natural sunlight
Nanosized zinc oxide is an intriguing material that can be applied in various fields. In this study, Ce doped ZnO nano-catalysts (Ce-ZnO) were synthesized by two different methods (, hydrothermal (Ce-ZnO-HT) and polymer gel combustion (Ce-ZnO-CB) methods) to compare their photodegradation efficiency. The prepared material characteristics were investigated using XRD, SEM, TEM, FTIR, UV-Vis, PL, XPS, EDS, and BET.
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