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首页> 外文期刊>RSC Advances >In situ bubble template promoted facile preparation of porous g-C3N4 with excellent visible-light photocatalytic performance
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In situ bubble template promoted facile preparation of porous g-C3N4 with excellent visible-light photocatalytic performance

机译：原位气泡模板促进了多孔g-C3N4的简便制备，具有优异的可见光光催化性能

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摘要

Porous graphitic carbon nitride (pg-C3N4) was facilely and economically prepared through in situ bubble templates such as (NH4)(2)S2O8, and the surface area of the resultant pg-C3N4 was controlled from 6.4 to 55.0 m(2) g(-1) by adjusting the mass ratio of (NH4)(2)S2O8/melamine. Moreover, pg-C3N4 was also obtained by other gas-generating porogens of ammonium salts, displaying the generality of the preparation method. The as-prepared g-C3N4 presented a porous structure with a higher surface area and displayed an improved separation efficiency for photogenerated electron-hole pairs. These integrative positive factors contributed to pg-C3N4 possessing more excellent photocatalytic activity for degrading Rhodamine B and phenol pollutants, and splitting water to H-2 than bulk g-C3N4 under visible-light. Moreover, the as-prepared pg-C3N4 exhibited unexceptionable stability and reusability even after four photocatalytic runs. The simple, economical and general fabrication strategy with bubble-generated porogen agents for porous graphitic carbon nitride with superior visible-light photocatalytic performance is attractive for environmental and energy application fields.
机译：通过原位气泡模板如（NH4）（2）S2O8方便，经济地制备了多孔石墨碳氮化碳（pg-C3N4），并将生成的pg-C3N4的表面积控制在6.4至55.0 m（2）g （-1）通过调节（NH4）（2）S2O8 /三聚氰胺的质量比。而且，pg-C3N4也可以通过其他气体生成铵盐的成孔剂获得，显示了制备方法的一般性。所制备的g-C 3 N 4呈现出具有较高表面积的多孔结构，并且对于光生电子-空穴对显示出改善的分离效率。这些综合的积极因素促使pg-C3N4在可见光下具有比散装g-C3N4更好的光降解罗丹明B和苯酚污染物以及将水分解为H-2的光催化活性。而且，所制备的pg-C3N4即使在四次光催化运行后仍表现出无与伦比的稳定性和可重复使用性。具有气泡产生的致孔剂的简单，经济和通用的制造策略，对多孔石墨氮化碳具有优异的可见光光催化性能，对环境和能源应用领域具有吸引力。

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