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首页> 外文期刊>RSC Advances >Catalytic performance of supported g-C3N4 on MCM-41 in organic dye degradation with peroxymonosulfate
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Catalytic performance of supported g-C3N4 on MCM-41 in organic dye degradation with peroxymonosulfate

机译：用过氧键硫酸盐在有机染料降解中对MCM-41负载的G-C3N4的催化性能

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摘要

A graphitic carbon nitride-containing MCM-41 catalyst (g-C _(3) N _(4) /MCM-41) was prepared through an in situ thermal approach and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, N _(2) adsorption–desorption and X-ray photoelectron spectroscopy. It was found that Acid Orange 7 (AO7) and other five organic dyes can be completely degraded by the g-C _(3) N _(4) /MCM-41 catalyst within 30 min in the presence of peroxymonosulfate (PMS), while g-C _(3) N _(4) + PMS and MCM-41 + PMS show nearly no activity. A non-radical pathway accompanied by radical generation in PMS activation and AO7 oxidation is proposed. The oxidized carbon species N–C–O on g-C _(3) N _(4) with strong electron density plays a key role in the reaction, while the large surface area of the catalyst can also efficiently enhance the accessibility of catalytic active sites. Though the reusability of the g-C _(3) N _(4) /MCM-41 catalyst is not very good as that of metal oxide catalysts, its activity can be recovered by KOH treatment. The study can broaden the application of g-C _(3) N _(4) in the area of wastewater treatment.
机译：通过原位热方法制备含石墨碳氮化物的MCM-41催化剂（GC _（3）N _（4）/ MCM-41），其特征在于X射线衍射，傅里叶变换红外光谱，透射电子显微镜，N _（2）吸附 - 解吸和X射线光电子能谱。发现酸橙7（AO7）和其他5个有机染料可以在30分钟内在过氧键硫酸盐（PMS）的情况下在30分钟内完全降解，而GC _（3）n _（4）+ pms和mcm-41 + pms显示几乎没有活动。提出了一种非基流途径，伴随着PMS激活和AO7氧化中的自由基。 GC _（3）N _（4）上的氧化碳物质N-C-O具有强电子密度在反应中起关键作用，而催化剂的大表面积也可以有效地增强催化活性位点的可及性。虽然G-C _（3）N _（4）/ MCM-41催化剂的可重用性不是金属氧化物催化剂的可重用性，但其活性可以通过KOH处理回收。该研究可以在废水处理领域进行G-C _（3）N _（4）的应用。

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