Abstract

Using Fiber as the based material for photocatalyst particles is favorable for their recovery, thereby avoiding the photocatalyst particles cause secondary pollution to water environment. In this work, the AgBr and Ag₃PO₄ photocatalyst particles were loaded onto the surface of chitosan fiber (CF) via chelation and in situ anion-exchange method. The photocatalytic results illustrated that the AgBr/Ag₃PO₄/CF composites displayed the best photocatalytic performance when the mass ratio of Ag₃PO₄ and AgBr onto the CF was approximately 1:0.15, their degradation rate can reach 98.1% for the methyl orange (MO) solution, this value far exceeded those of pure CF, AgBr/CF composites, and Ag₃PO₄/CF composites. Besides, the AgBr/Ag₃PO₄/CF composites also shown excellent durability, after the fifth cycle, they still maintained a decolorization rate of 86.4% for the MO solution, while the Ag₃PO₄/CF composites maintained a decolorization rate of only 70.7%. Based on these results, we consider that the AgBr/Ag₃PO₄/CF composites have high practical interest in environmental remediation.

Graphic Abstract

中文翻译：

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壳聚糖纤维上AgBr / Ag 3 PO 4异质结的生长以降解有机污染物

摘要

使用纤维作为光催化剂颗粒的基础材料有利于其回收，从而避免了光催化剂颗粒对水环境造成二次污染。在这项工作中，通过螯合和原位阴离子交换方法将AgBr和Ag ₃ PO ₄光催化剂颗粒负载到壳聚糖纤维（CF）的表面上。光催化结果表明，当Ag ₃ PO ₄与AgBr在CF上的质量比约为1：0.15时，AgBr / Ag ₃ PO ₄ / CF复合材料表现出最佳的光催化性能，甲基溴的降解率可达98.1％。橙色（MO）溶液，该值远远超过纯CF，AgBr / CF复合材料和Ag₃ PO ₄ / CF复合材料。此外，AgBr / Ag ₃ PO ₄ / CF复合材料还显示出优异的耐久性，在第五次循环后，MO溶液的脱色率仍保持在86.4％，而Ag ₃ PO ₄ / CF复合材料的脱色率保持在86.4％。只有70.7％。基于这些结果，我们认为AgBr / Ag ₃ PO ₄ / CF复合材料在环境修复方面具有很高的实用价值。

图形摘要