研究目的
Investigating the effects of CTAB template on physico-chemical properties of porous lanthanum titanate and its photocatalytic activity on azophloxine degradation.
研究成果
The addition of CTAB in the precursor enhances the photocatalytic activity of La2Ti2O7 by reducing crystallite size and enlarging surface area and pore volume. The maximum photocatalytic degradation efficiency of azophloxine was achieved with 4 g CTAB.
研究不足
The BET surface area of the porous material is not as high as other porous photocatalysts due to particles agglomeration and shrinkage of the pores at high calcination temperature.
1：Experimental Design and Method Selection:
A sol-gel route was used to prepare porous lanthanum titanate with CTAB as a template reagent.
2：Sample Selection and Data Sources:
La2Ti2O7 samples were synthesized with varying amounts of CTAB (0, 2, 4, 6 g).
3：List of Experimental Equipment and Materials:
SEM (QUANTA 250), XRD (D8 X-ray diffractometer), PL spectra (Perkin Elmer LS55), BET surface area (ASAP 2460).
4：0). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The mixture was stirred at 70°C until sol-gel transformation was completed, then calcined at 800°C for 3 h.
5：Data Analysis Methods:
XRD for phase identification, SEM for morphology, BET for surface area, PL for charge carrier separation efficiency.
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