Nitrogen-Doped Photocatalyst Prepared by Mechanochemical Method: Doping Mechanisms and Visible Photoactivity of Pollutant Degradation
Effect of NH4F concentration on the UV-Vis-DRS of the NF series catalysts (NF-0, NF-37, NF-74, NF-148, and NF-370 represent the NF series catalyst calcined in the presence of NH4F; the dosages of NH4F were 0, 0.37, 0.74, 1.48, and 3.70 g, resp.; the sample BLANK was the raw TiO2 directly calcined without milling (TO400)).
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