【摘 要】
：
Mg/Al/Fe layered double hydroxide (MAF-LDH1) was prepared by solvothermal method with the sodium dodecyl sulfate as the template,and the ethanol system was benefit to growth of sample.The nature in the resulting MAF-LDH was investigated by X-ray diffracti
【机 构】
：
Key Laboratory of Processing and Testing Technology of Glass & Functional Ceramics of Shandong Provi
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
Mg/Al/Fe layered double hydroxide (MAF-LDH1) was prepared by solvothermal method with the sodium dodecyl sulfate as the template,and the ethanol system was benefit to growth of sample.The nature in the resulting MAF-LDH was investigated by X-ray diffraction,field emission scanning electron microscopy,Fourier transformed infrared spectra,thermogravimetric analysis,and N2 adsorption-desorption.The morphology of MAF-LDH1 is petal-like with the size of 400-500 nm and the thickness about 10-20 nm.The adsorption performance of the samples was evaluated by absorption of the Congo red (CR) solutions.Compared with Mg/Al layered double hydroxide (MA-LDH),the maximum adsorption capacities of the MAF-LDH1 samples were 943.4 mg/g which was greatly enhanced.Furthermore,after seven cycling tests,the adsorption performance was still up to 90％.Theoretical calculation results revealed that the adsorption process was spontaneous and followed the pseudo-second-order kinetic model and Freundlich model.This work provides a promising alternative strategy to enhance the adsorptive properties of hydrotalcite-like materials.
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