研究目的
Investigating the photocatalytic activity of Ag3PO4 synthesized via a mist-solution precipitation method and its effectiveness in degrading methylene blue under LED irradiation.
研究成果
Ag3PO4 synthesized at higher reaction temperatures exhibited better crystallinity and photocatalytic activity, with the sample prepared at 70 °C showing the highest degradation rate. The method offers a simple and effective way to produce Ag3PO4 with enhanced photocatalytic properties.
研究不足
The study is limited to the photocatalytic degradation of MB under specific conditions. The method's applicability to other pollutants and under different environmental conditions was not explored.
1：Experimental Design and Method Selection
Ag3PO4 was synthesized through a precipitation reaction between the mist of Ag+ generated by a piezoelectric atomizer and Na2HPO4 solution at various reaction temperatures.
2：Sample Selection and Data Sources
Silver nitrate (AgNO3) and disodium hydrogenphosphate (Na2HPO4) were used as reactants. Methylene blue (MB) was used as the pollutant for photocatalytic degradation studies.
3：List of Experimental Equipment and Materials
Ultrasonic piezoelectric disk, hot plate, x-ray diffractometer (XRD, X’Pert, Phillipe), scanning electron microscope (SEM, Quanta400), diffuse reflectance UV-vis spectrophotometer (UV-1650, Shimadzu), inductively coupled plasma optical emission spectrometer (ICP-OES, Optima 8000, Perkin Elmer), Fourier Transform Infrared (FT-IR) spectrometer (Vertex70, Bruker), Raman microscope spectrometer (RAMANforce, Nanophoton).
4：Experimental Procedures and Operational Workflow
The Ag+ mist was generated and transferred to react with Na2HPO4 solution at different temperatures. The photocatalytic activity was evaluated by degrading MB under LED irradiation, studying the effects of various operational parameters.
5：Data Analysis Methods
The degradation rate was calculated using pseudo-first-order reaction kinetics. The physical and chemical properties of Ag3PO4 were analyzed using XRD, SEM, UV-Vis, FT-IR, and Raman spectroscopy.
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diffuse reflectance UV-vis spectrophotometer
UV-1650
Shimadzu
Study of the optical properties of the prepared Ag3PO4
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inductively coupled plasma optical emission spectrometer
Optima 8000
Perkin Elmer
Determination of the concentration of Ag+ in solution after photocatalysis
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Fourier Transform Infrared spectrometer
Vertex70
Bruker
Recording FT-IR spectra of Ag3PO4 powders
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x-ray diffractometer
X’Pert
Phillipe
Phase identification of the prepared Ag3PO4
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scanning electron microscope
Quanta400
Determination of morphology of the prepared Ag3PO4
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Raman microscope spectrometer
RAMANforce
Nanophoton
Acquisition of Raman spectra
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