异质结构LaFeO3-g/C3N4光催化剂的合成及光催化降解亚甲基蓝的活性研究
Study on Synthesis of Heterogeneous LaFeO3-g/C3N4 Photocatalyst and Its Photocatalytic Activity for Methylene Blue Degradation
DOI: 10.12677/HJCET.2020.103024, PDF,    国家科技经费支持
作者: 刘 浩, 徐 科*, 唐必剑, 秦 超, 孙孝红, 乐柯宁, 郑芳芳, 翁明金, 谢齐霞：贵州师范学院化学与材料学院，贵州 贵阳
关键词: 异质结构；Z型光催化体系；光催化降解；Heterogeneous； Z-Scheme Photocatalysis System； Photodegradation
摘要: 本文采用高温煅烧法合成了异质结构的LaFeO3/g-C3N4纳米复合材料，在可见光照射下光催化降解亚甲基蓝的活性。结果表明：材料具有Z型光催化体系的特点；3瓦LED灯照射15分钟，在25毫克EDTA-2Na存在下，5%-LaFeO3/g-C3N4异质结构的纳米复合材料使100mL亚甲基蓝(MB)溶液超过95%得到降解。结论：LaFeO3/g-C3N4的异质结构与纯LaFeO3和纯g-C3N4相比，异质结构的LaFeO3/g-C3N4光催化性能得到较大的提高。
Abstract: In this paper, the heterogeneous LaFeO3/g-C3N4 nanocomposites were synthesized by high-temperature calcination. The photocatalytic degradation of methylene blue under visible light was studied. The results show that the heterogeneous LaFeO3/g-C3N4 nanocomposites possessed the features of a Z-scheme photocatalysis system. The 5%-LaFeO3/g-C3N4 exhibited the highest photodegradation and water splitting rate. More than 95% of methylene blue (MB) was solution which was irradiated using a 3 W light-emitting diode. Conclusions: Compared with pure LaFeO3 and g-C3N4, the heterostructure of LaFeO3/g-C3N4 has been greatly improved.
文章引用：刘浩, 徐科, 唐必剑, 秦超, 孙孝红, 乐柯宁, 郑芳芳, 翁明金, 谢齐霞. 异质结构LaFeO3-g/C3N4光催化剂的合成及光催化降解亚甲基蓝的活性研究[J]. 化学工程与技术, 2020, 10(3): 183-191. https://doi.org/10.12677/HJCET.2020.103024

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