化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (12) : 218-223. DOI: 10.19817/j.cnki.issn1006-3536.2023.12.054

科学研究

柔性YAG-Al₂O₃纳米纤维膜负载C₃N₄的水处理性能研究

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作者信息 +

Water treatment performance of flexible YAG-Al₂O₃ nanofiber membrane loaded with C₃N₄

Jiang Juan¹, Ni Na², Niu Qiang¹

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Received		Published
2023-05-04		2023-12-20
Issue Date	Revised Date
2023-12-27	2023-05-04

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摘要

采用溶胶-凝胶法和静电纺丝技术制备了柔性钇铝石榴石-氧化铝(YAG-Al₂O₃)纳米纤维膜,然后使用尿素包埋法将石墨相氮化碳(g-C₃N₄)引入到纤维膜孔隙中,制备了自支撑光催化降解钇铝石榴石-氧化铝/氮化碳(YAG-Al₂O₃/C₃N₄)复合材料,表征了材料的形貌结构和力学行为,并研究了其在亚甲基蓝污水处理中的可见光催化降解性能。结果表明,YAG-Al₂O₃纳米纤维膜具有优异的柔韧性,YAG-Al₂O₃/C₃N₄复合材料在厚度方向具有良好的弹性,两者均为自支撑材料。100min内复合材料对亚甲基蓝的降解率可达96%以上,循环3次后降解率仍保持在94%左右。催化反应动力学符合Langmuir-Hinshelwood(L-H)模型,说明复合材料具有长期稳定且高效的催化降解效果。

Abstract

The flexible yttrium aluminum garnet-alumina (YAG-Al₂O₃) nanofiber membranes were prepared by sol-gel method and electrospinning technology,and then graphite-phase carbon nitride (g-C₃N₄) was introduced into the pores of the nanofiber membrane by urea embedding method to obtain the self-supporting YAG-Al₂O₃/C₃N₄ composite for photocatalytic degradation.The morphology,structure and mechanical behavior of the prepared materials were characterized,and their visible-light photocatalytic degradation performance in methylene blue wastewater treatment was studied.The results showed that the YAG-Al₂O₃ nanofiber membrane had excellent flexibility,and the YAG-Al₂O₃/C₃N₄ composite had good elasticity in the thickness direction,both of which were self-supporting materials.The degradation rate of methylene blue by the composite could reach more than 96% within 100 min,and still remained at about 94% after three cycles.The catalytic reaction kinetics conformed to the Langmuir-Hinshelwood(L-H) model,indicating that the composite material had a long-term stable and efficient catalytic degradation effect.

关键词

YAG-Al₂O₃纳米纤维膜 / YAG-Al₂O₃/C₃N₄复合材料 / 自支撑结构 / 催化降解

Key words

YAG-Al₂O₃ nanofiber membrane / YAG-Al₂O₃/C₃N₄ composite / self-supporting structure / catalytic degradation

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柔性YAG-Al₂O₃纳米纤维膜负载C₃N₄的水处理性能研究[J]. 化工新型材料, 2023, 51(12): 218-223 DOI:10.19817/j.cnki.issn1006-3536.2023.12.054

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