The Performance of the 5% Fe-4PEI-CN Photocatalyst in Degrading p-Chlorophenol (p-ClPhOH) and Generating Hydrogen Peroxide (H2O2) (IMAGE)

Beijing Zhongke Journal Publising Co. Ltd.

The Performance of the 5% Fe-4PEI-CN Photocatalyst in Degrading p-Chlorophenol (p-ClPhOH) and Generating Hydrogen Peroxide (H2O2)

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Through a series of photocatalytic experiments, we found that the 5% Fe-4PEI-CN catalyst significantly enhances the degradation efficiency of p-chlorophenol (p-ClPhOH) under visible light irradiation. The experimental results show that the modified 5% Fe-4PEI-CN exhibits much higher photocatalytic activity compared to pristine carbon nitride (CN). Under visible light, 5% Fe-4PEI-CN rapidly degrades p-ClPhOH, with a degradation efficiency markedly superior to both unmodified CN and CN modified with only PEI.In terms of hydrogen peroxide (H2O2) generation, 5% Fe-4PEI-CN also demonstrates outstanding activity, achieving an H2O2 yield of 102.6 µmol/L, which is 22 times that of pristine CN. This significant improvement is primarily attributed to the PEI modification, which enhances the catalyst's oxygen adsorption capacity and increases the separation efficiency of electron-hole pairs, thereby promoting the two-electron reduction pathway of O2 to generate H2O2.To assess the stability and reusability of 5% Fe-4PEI-CN, we conducted multiple recycling tests. After each experiment, the catalyst was recovered by centrifugation, washed, dried, and then reused in subsequent photocatalytic degradation and H2O2 generation experiments. The results indicate that after five cycles, the photocatalytic activity and H2O2 generation activity of 5% Fe-4PEI-CN showed no significant decline, demonstrating the catalyst's excellent stability and durability, making it suitable for repeated use in practical applications.In summary, 5% Fe-4PEI-CN exhibits exceptional performance in the photocatalytic degradation of p-ClPhOH and the generation of H2O2. Its high photocatalytic activity and excellent recyclability offer broad application prospects in the treatment of recalcitrant organic pollutants and water purification. Further optimization of the catalyst's synthesis and modification methods is expected to enhance its effectiveness in practical applications.

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Beijing Zhongke Journal Publising Co. Ltd.

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