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首页> 外文期刊>RSC Advances >Three-dimensional NiAl-mixed metal oxide film: preparation and capacitive deionization performances
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Three-dimensional NiAl-mixed metal oxide film: preparation and capacitive deionization performances

机译：三维NiAl混合金属氧化物薄膜的制备和电容去离子性能

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摘要

A NiAl layered double hydroxide (NiAl-LDH) film was grown on the surface of a three-dimensional (3D) nickel foam by an in situ hydrothermal method using a nickel foam substrate as a nickel source, and boehmite (AlOOH) sol as an aluminium source. The 3D NiAl-mixed metal oxide (NiAl-MMO) film was obtained by calcining a NiAl-LDH film at 400 degrees C. The structure and surface morphology of the film samples were studied by X-ray diffraction, elemental analysis, room temperature Fourier transform infrared spectra and electron microscopy analysis. The results showed that NiAl-LDH nanoplatelets densely covered the surface of the nickel foam substrate. The 3D NiAl-MMO film obtained by calcining the NiAl-LDH film was used as capacitive deionization (CDI) electrode for electrosorption of NaCl in water. Under static test conditions, the electrosorption ratio for 0.01 mol L-1 NaCl is above 37.5%, while the electrosorptive capacity of the electrode is ultrahigh at about 81.2 mg g(-1) electrode. For 15 rounds of electrosorption and desorption cycling, the decrease of the electrosorption ratio is very minimal, and the desorption ratio of NaCl is above 87.7%. It is shown that the NiAl-MMO film electrode can be used for the removal of NaCl in water.
机译：通过使用镍泡沫基底作为镍源，勃姆石（AlOOH）溶胶作为原位水热法，在三维（3D）镍泡沫表面上生长NiAl层状双氢氧化物（NiAl-LDH）膜。铝源。通过在400摄氏度下煅烧NiAl-LDH膜获得3D NiAl混合金属氧化物（NiAl-MMO）膜。通过X射线衍射，元素分析，室温傅里叶研究膜样品的结构和表面形态。变换红外光谱和电子显微镜分析。结果表明，NiAl-LDH纳米片密集地覆盖了泡沫镍基材的表面。通过煅烧NiAl-LDH膜获得的3D NiAl-MMO膜用作电容式去离子（CDI）电极，用于水中NaCl的电吸附。在静态测试条件下，0.01 mol L-1 NaCl的电吸附率高于37.5％，而电极的电吸附容量则很高，约为81.2 mg g（-1）电极。对于15个循环的电吸附和解吸循环，电吸附率的降低非常小，NaCl的解吸率大于87.7％。结果表明，NiAl-MMO膜电极可用于去除水中的NaCl。

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