Abstract

Photocatalytic technology has the potential to eliminate organic pollutants in wastewater. Herein, superparamagnetic Fe₃O₄/ZnO/g-C₃N₄ composite photocatalysts are reported. Photocatalysts with different g-C₃N₄ concentrations were prepared and their photocatalytic activities were tested. The composite samples have better photocatalytic activity in visible light. This result suggests that the heterogeneous junction of the composite photocatalyst retards carrier recombination: because of the presence of g-C₃N₄ nanosheets, the optical response range of photocatalyst is expanded. The introduction of Fe₃O₄ nanoparticles can solve the problem of difficult recovery of powder photocatalyst. Photocatalyst activity only slightly decreases after three cycles of use.

中文翻译：

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磁性Fe 3 O 4 / ZnO / gC 3 N 4纳米粒子的可见光降解和RhB的分离

摘要

光催化技术具有消除废水中有机污染物的潜力。在此，报道了超顺磁性的Fe ₃ O ₄ / ZnO / gC ₃ N ₄复合光催化剂。制备了具有不同gC ₃ N ₄浓度的光催化剂，并测试了它们的光催化活性。复合样品在可见光下具有更好的光催化活性。该结果表明复合光催化剂的非均质结延迟了载流子的复合：由于存在gC ₃ N ₄纳米片，光催化剂的光学响应范围得到了扩展。Fe ₃ O的引入₄纳米粒子可以解决粉末光催化剂回收困难的问题。在使用三个周期后，光催化剂的活性只会稍微降低。