Photodegradation Performance of g-C3N4 Fabricated by Directly Heating Melamine
Photodegradation Performance of g-C3N4 Fabricated by Directly Heating Melamine
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DOI：
10.1021/la900923z
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发表时间：
2009-09-01
期刊：
影响因子：
3.9
通讯作者：
Zou, Z. G.
中科院分区：
文献类型：
--
作者：
Yan, S. C.;Li, Z. S.;Zou, Z. G.
通过直接加热低成本三聚氰胺合成了g-C3N4光催化剂。选择甲基橙染料（MO）作为光降解目标来评估所制备的 g-C3N4 的光催化活性。对比实验表明，Ag负载可以大大提高g-C3N4的光催化活性。强酸根离子（SO42-或NO3-）可以促进g-C3N4光催化体系中MO的降解速率。 g-C3N4 上的 MO 降解主要归因于光生电子引起的光还原过程。我们的结果清楚地表明，不含金属的 g-C3N4 在有机污染物的光降解方面具有良好的性能。
The g-C3N4 photocatalyst was synthesized by directly heating the low-cost melamine. The methyl orange dye (MO) was selected as a photodegrading goal to evaluate the photocatalytic activity of as-prepared g-C3N4. The comparison experiments indicate that the photocatalytic activity of g-C3N4 can be largely improved by the Ag loading. The strong acid radical ion (SO42- or NO3-) can promote the degrading rate of MO for g-C3N4 photocatalysis system. The MO degradation over the g-C3N4 is mainly attributed to the photoreduction process induced by the photogenerated electrons. Our results clearly indicate that the metal-free g-C3N4 has good performance in photodegradation of organic pollutant.