以硝酸铁和三聚氰胺为原料,采用热解法制备Fe3+掺杂类石墨相氮化碳(g-C3N4).利用XRD、SEM、BET、UV-Vis等对试样进行了表征.以亚甲蓝溶液为模拟污染物,对试样进行了光催化性能评价.结果表明:Fe3+掺杂有利于增加g-C3N4的比表面积、降低带隙能和改善对可见光的吸收.当Fe3+掺杂量为0.3wt.％时,制备的Fe3+/g-C3N4光催化性能最佳,在高压汞灯照射240 min时,对亚甲蓝的降解率为83.7％,比纯g-C3N4光催化性能提高44.6％.%Fe3+ doped graphite-like carbon nitride (Fe3+/g-C3N4) was prepared by pyrolysis method using Fe(NO3)3 and C3H6N6 as raw materials. The samples were characterized by XRD, SEM, BET, UV-Vis and other analytical methods. The photocatalytic activity of the samples was evaluated using methylene blue solution as model pollutant. The results show that Fe3+ doping was beneficial to increase the specific surface area of g-C3N4, reduce the band gap energy and improve the absorption of visible light. Fe3+/g-C3N4 has the best photocatalytic activity when Fe3+ doping content was 0.3wt.％. The degradation rate of methylene blue was 83.7％, 44.6％ higher than that of pure g-C3N4.
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