研究目的
Investigating the photocatalytic effects of potassium-doped titanium oxide (KTiOx) nanostructures prepared via the wet corrosion process (WCP) on the degradation of organic dyes under UV irradiation.
研究成果
KTiOx nanostructures produced by WCP exhibit high photocatalytic efficiency, especially when annealed at 600 °C, due to their high surface area and negative surface charge. These nanostructures are promising for photocatalysis applications, offering advantages in reusability and durability. However, annealing above 600 °C leads to rutile phase formation, reducing photocatalytic activity.
研究不足
The study is limited by the specific conditions of the WCP and annealing temperatures, which may not be optimal for all photocatalytic applications. The formation of rutile phase at high annealing temperatures negatively affects photocatalytic performance.
1：Experimental Design and Method Selection:
The study involved the synthesis of KTiOx nanowires on Ti microspheres using the WCP with varying KOH concentrations to alter surface area and charge. Structural and chemical analyses were conducted using XRD, SEM, TEM, XRF, and EDX. Photocatalytic performance was assessed by degrading MB, CG, and AR dyes under UV light.
2：Sample Selection and Data Sources:
Ti microspheres (125–250 μm, purity >99.8%) were treated with KOH solutions of 1 to 25 mol/L at room temperature for 24 hours, followed by washing and drying.
3：8%) were treated with KOH solutions of 1 to 25 mol/L at room temperature for 24 hours, followed by washing and drying.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Equipment included SEM (FEI Nova 600 NanoLab), TEM (JEOL ARM200F), XRF (Philips PW2400), and UV-Vis spectrophotometer (Tecan Infinite M2000 PRO). Materials were Ti microspheres, KOH, and organic dyes (MB, CG, AR).
4：Experimental Procedures and Operational Workflow:
Ti microspheres were treated with KOH, annealed at various temperatures, and characterized. Photocatalytic activity was tested by exposing dye solutions to UV light in the presence of KTiOx and measuring degradation via UV-Vis spectroscopy.
5：Data Analysis Methods:
Photocatalytic efficiency was quantified using pseudo-first order kinetics. Surface area was calculated using BET theory, and surface charge was analyzed via zeta potential measurements.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
