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首页> 外文期刊>Materials Science and Engineering >Facile fabrication of leaf coral-like structured Cu-Al LDH/PVDF composite adsorptive membrane with enhanced adsorption performance
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Facile fabrication of leaf coral-like structured Cu-Al LDH/PVDF composite adsorptive membrane with enhanced adsorption performance

机译：叶片珊瑚状结构化Cu-Al LDH / PVDF复合吸附膜的容易制作具有增强的吸附性能

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摘要

In the present study, the novel leaf coral-like structured composite membrane is synthesized from array growth of copper aluminum layered double hydroxide (Cu-Al LDH) onto the polyvinylidene fluoride (PVDF) membrane surface through simple hydrothermal method. The as-prepared Cu-Al LDH/PVDF composite was characterized by FE-SEM, EDS element mapping, XRD, FTIR, AFM, BET and water contact angle (WCA). The dye adsorption of as-synthesized composite was studied for removal Erythrosin B (EB) from aqueous solution. The obtained Cu-Al LDH/PVDF composite membrane exhibits higher hydrophilicity than PVDF membrane. The pseudo-second-order model properly described the adsorption kinetics of the obtained Cu-Al LDH/PVDF composite for EB. Adsorption isotherms for EB by the as-prepared composite were found to be satisfactorily fitted by the Langmuir model. The maximum adsorption capacity of the obtained Cu-Al LDH/PVDF composite was 17.36 mg g~(-1). The coexisting salts decreased the removal efficiency of EB on Cu-Al LDH/PVDF composite.
机译：在本研究中，通过简单的水热法从铜铝层叠双氢氧化物（Cu-Al LDH）的阵列生长，通过简单的水热法将新的叶珊瑚状结构复合膜合成。通过Fe-SEM，EDS元素映射，XRD，FTIR，AFM，BET和水接触角（WCA）表征了AS制备的Cu-Al LDH / PVDF复合材料。研究了由合成复合材料的染料吸附，用于从水溶液中去除erythroSinb（EB）。所得Cu-Al LDH / PVDF复合膜具有比PVDF膜更高的亲水性。伪二阶模型适当地描述了所得Cu-Al LDH / PVDF复合材料的吸附动力学。由朗马尔模型发现由制备的复合材料进行EB的吸附等温线。所得Cu-Al LDH / PVDF复合材料的最大吸附能力为17.36mg g〜（-1）。共存盐降低了Cu-Al LDH / PVDF复合材料的EB的去除效率。

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