研究目的
Investigating the photocatalytic degradation of tetracycline (TC) using porous Ag/graphite carbon nitride plasmonic composite under visible light irradiation.
研究成果
The Ag/g-C3N4 plasmonic photocatalysts with porous structure exhibited superior photocatalytic degradation of TC under visible light, attributed to the increased specific surface area, broadened visible light absorption, and improved charge separation. The catalysts showed high stability and reusability, making them promising for environmental water restoration.
研究不足
The study is limited by the specific conditions under which the photocatalytic degradation was tested, including the light source intensity and the concentration of TC. The practical application may be affected by the presence of other pollutants and varying water quality parameters.
1:Experimental Design and Method Selection:
The study involved the synthesis of Ag/g-C3N4 plasmonic photocatalysts with porous structure via a thermal exfoliation strategy and photo-reduction method. The photocatalytic performance was evaluated under visible light irradiation.
2:Sample Selection and Data Sources:
Tetracycline (TC) was used as the model pollutant. The catalysts were characterized using XRD, SEM, TEM, BET, FT-IR, XPS, UV-vis DRS, PL, and TPC analyses.
3:List of Experimental Equipment and Materials:
Equipment included XRD (Rigaku D/max 2500), SEM (Hitachi S-4800), TEM (JEM-2100HR), BET (TristarII3020), FT-IR (Is5), XPS (ESCALAB 250Xi), UV-vis spectrophotometer (UV-2550), PL (F-4600), and TPC (CHI 1030B). Materials included melamine, silver nitrate, and tetracycline.
4:Experimental Procedures and Operational Workflow:
The catalysts were synthesized, characterized, and then tested for TC degradation under visible light. The degradation process was monitored by UV-vis spectroscopy.
5:Data Analysis Methods:
The photocatalytic activity was analyzed using pseudo first-order kinetics. The intermediates were identified by LC-MS, and the active species were determined by radical quenching experiments and ESR spectroscopy.
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