研究目的
Developing a technique for ammonia removal in waters using a direct Z-scheme photocatalytic system composed of narrow band-gap MoS2 and N-doped graphene (NG) semiconductors to harvest NIR irradiation.
研究成果
The MoS2/NG Z-scheme photocatalytic system effectively degrades ammonia under NIR irradiation with high stability and efficiency, attributed to the more positive valence band level of the Z-scheme system.
研究不足
The study focuses on the photocatalytic degradation of ammonia under NIR irradiation, and the efficiency may vary under different environmental conditions or with other pollutants.
1：Experimental Design and Method Selection:
Fabrication of a direct Z-scheme NIR-response photocatalytic system (MoS2/NG) for ammonia degradation.
2：Sample Selection and Data Sources:
Ammonia solutions with various concentrations and pH values were used.
3：List of Experimental Equipment and Materials:
Sodium molybdate dihydrate, graphite powder, thiocarbamide, potassium permanganate, ammonium chloride, and deionised water.
4：Experimental Procedures and Operational Workflow:
Synthesis of NG and MoS2/NG, photocatalytic degradation tests under NIR irradiation, and analysis of degradation products.
5：Data Analysis Methods:
UV–Vis-NIR diffuse reflectance spectra, Raman spectra, X-ray photoelectron spectroscopy, and gas chromatography for product analysis.
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