研究目的
To synthesize a novel ZIF-8@BiVO4 composite photocatalyst with enhanced photocatalytic performance under visible light irradiation.
研究成果
The ZIF-8@BiVO4 composite photocatalyst exhibited superior photocatalytic performance for the degradation of MB under visible light irradiation, attributed to the synergistic effect between BVO and ZIF-8. The composite photocatalyst also showed good photostability, indicating potential for wastewater treatment applications.
研究不足
The study focuses on the photocatalytic degradation of MB under visible light irradiation. The practical application in wastewater treatment may require further optimization and testing under various conditions.
1：Experimental Design and Method Selection
The study employed an in-situ growth method to synthesize ZIF-8@BiVO4 composite photocatalyst. Characterization techniques included X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, N2 adsorption, and photoluminescence spectroscopy.
2：Sample Selection and Data Sources
Bismuth nitrate pentahydrate, ammonium vanadate, sodium hydroxide, sodium dodecylbenzenesulfonate, zinc nitrate hexahydrate, 2-methylimidazole, methanol, and methylene blue were used as received without further purification.
3：List of Experimental Equipment and Materials
X-ray diffractometer (D8Advance, Bruker), scanning electron microscope (SU70, Hitachi), energy dispersive spectroscopy, surface area analyzer (Micromeritics ASAP 2020), photoluminescence spectroscope (F-4500, Hitachi), UV–Vis spectrophotometer (Shimadzu, UV-2450).
4：Experimental Procedures and Operational Workflow
BVO nanosheets were synthesized by a hydrothermal method. ZIF-8@BVO composite was prepared through an in-situ growth method on the surface of BVO. Photocatalytic performance was evaluated by the degradation of MB under visible light irradiation.
5：Data Analysis Methods
The photocatalytic degradation efficiency was calculated based on the concentration change of MB solution. The production of hydroxyl radicals was investigated using photoluminescence method with terephthalic acid as a probing molecule.
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