Wu Lian-Kui, Wu Hao, Liu Zheng-Zheng, Cao Hua-Zhen, Hou Guang-Ya, Tang Yi-Ping, Zheng Guo-Qu
College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
J Hazard Mater. 2018 Apr 5;347:15-24. doi: 10.1016/j.jhazmat.2017.12.048. Epub 2017 Dec 23.
A novel copper ferrite foam fabricated on Fe-Ni foam substrate was synthesized via a simple hydrothermal method to efficiently remove arsenic from aqueous solution. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-Ray diffraction pattern (XRD) and Raman spectra were used to characterize the morphology and surface composition of the copper ferrite foam (CFF). The adsorption behavior of As(III) and As(V) onto this CFF is studied as a function of solution pH, temperature, contact time, and different concentrations. Results shown that this CFF has high adsorption capacity and excellent recyclability. Adsorption isotherms study indicates Langmuir model of adsorption. The maximum adsorption capability of As(III) and As(V) on CuFeO foam is observed about 44.0 mg g and 85.4 mg g, respectively. Regeneration experiment indicates that arsenic could be easily desorbed from CFF with 0.10 mol L NaOH and the high adsorption capacity can be maintained for six regeneration cycle.
通过一种简单的水热法在铁镍泡沫基底上制备了一种新型的泡沫铜铁氧体，用于高效去除水溶液中的砷。利用扫描电子显微镜（SEM）、X射线光电子能谱（XPS）、X射线衍射图谱（XRD）和拉曼光谱对泡沫铜铁氧体（CFF）的形貌和表面组成进行了表征。研究了As(III)和As(V)在该CFF上的吸附行为与溶液pH值、温度、接触时间以及不同浓度的关系。结果表明，该CFF具有高吸附容量和优异的可回收性。吸附等温线研究表明符合朗缪尔吸附模型。观察到As(III)和As(V)在CuFeO泡沫上的最大吸附容量分别约为44.0 mg g和85.4 mg g。再生实验表明，用0.10 mol L NaOH可使砷很容易地从CFF上解吸下来，并且在六个再生循环中都能保持高吸附容量。
