NiFe-LDH@Cu2O/PAN光催化纤维的制备及性能研究
2024-02-23 16:48:38   来源：   评论：0 点击：

  关键词：NiFe-LDH@Cu₂O/PAN光催化纤维；层状双氢氧化物；聚丙烯腈纤维；NFC；亚甲基蓝；降解
中图分类号：TS101.92⁺1.52            文献标志码：A            文章编号：1001-9634(2024)01-0012-05
 
收稿日期：2022-09-28；修回日期：2023-05-09
作者简介：高云莉（1996—），女，陕西延安人，助理工程师，主要从事高分子材料性能研究等方面的工作。  
Abstract:In view of the low photocatalytic activity of Cu₂O，the difficulty of recycling and the poor reuse of powder photocatalyst，NFC/PAN photocatalytic fiber is prepared by electrospinning.By introducing a layered double hydroxide that can contain anions in its interlayer，Cu₂O is modified by NiFe-LDH and loaded on PAN fiber.The testing methods are used to evaluate the effect of different amount of Ni₃Fe₁-LDH@Cu₂O on the properties of photocatalytic fibers，such as scanning electron microscope，energy spectrometer，universal testing machine，UV-VIS absorption spectroscopy，etc.It is pointed out that Ni₃Fe₁-LDH@Cu₂O/PAN with 5% NFC mass percentage has the best degradation effect on methylene blue after 60 min of visible light irradiation，reaching 91.7%，with a specific surface area of 76.3 cm²/g，showing certain mechanical stability.The degradation rate is still above 85% after repeated use for five times.Moreover，the photocatalytic effect of 5% Ni₃Fe₁-LDH@Cu₂O/PAN can achieve high efficiency in a short time，and the degradation rate constant of the photocatalytic fiber is the highest，which is 0.022 6，and the tensile breaking strength is increased by 3.35 times.
Key Words:NiFe-LDH@Cu₂O/PAN photocatalytic fiber；layered double hydroxide；polyacrylonitrile fiber；NFC；methylene blue；degradation
 
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