碳载体杂化纳米金属材料制备及污水处理应用研究
发布时间：2018-10-05 13:41
【摘要】：采用超声辅助共沉淀法制备了纳米镍/镁铝层状双金属氢氧化物/三聚氰胺-甲醛-乙二胺四草酰乙酸螯合树脂/活性炭复合材料(Ni/MgAl-LDHs/MFT/AC).通过场发射扫描电镜(FE-SEM)、X-射线衍射仪(XRD)和傅里叶红外光谱(FT-IR)对该复合材料的结构和形貌进行了表征。结果表明：在含有MFT螯合树脂的活性炭表面上,均匀分布着花状的IgAl-LDHs, MgAl-LDHs上分布着聚集状的纳米镍颗粒。研究考察了2,6-二氯苯酚(2,6-DCP)在Ni/MgAl-LDHs/MFT/AC上的吸附行为,吸附机理为物理吸附,符合准一阶动力学模型,吸附过程为自发性吸热反应。在超声辅助条件下,Ni/MgAl-LDHs/MFT/AC可分别成功地用于2,6-DCP、染料(甲基橙、孔雀绿和亚甲基蓝)污水的降解。以泡沫铜电极为载体,通过苯胺的电聚合反应,将氧化石墨烯混合沉积到铜电极上,形成聚苯胺-氧化石墨烯/铜复合电极(PANI-GO/Cu);进而将纳米铜电沉积到PANI-GO/Cu表面,形成纳米铜/聚苯胺-氧化石墨烯/铜复合电极(Cu/PANI-GO/Cu)。FE-SEM、XRD和FT-IR表明了该修饰电极已形成。将该电极用于水溶液中的二氧化硫催化还原。结果显示：水溶液中的二氧化硫能被有效地还原为连二亚硫酸根。
[Abstract]:Nano-Ni / Mg-Al layered bimetallic hydroxide / melamine-formaldehyde-ethylenediamine tetraoxaloacetic acid chelating resin / activated carbon composite (Ni/MgAl-LDHs/MFT/AC) was prepared by ultrasonic assisted coprecipitation. The structure and morphology of the composite were characterized by field emission scanning electron microscopy (FE-SEM) X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The results showed that on the surface of activated carbon containing MFT chelating resin, nano-nickel nanoparticles were distributed uniformly on the flowered IgAl-LDHs, MgAl-LDHs. The adsorption behavior of 2H6-dichlorophenol on Ni/MgAl-LDHs/MFT/AC was investigated. The adsorption mechanism was physical adsorption, which was in accordance with the quasi first order kinetic model, and the adsorption process was spontaneous endothermic reaction. Ni / MgAl-LDHs / MFT / AC can be successfully used in the degradation of waste water (methyl orange malachite green and methylene blue). Using copper foam electrode as the carrier, graphene oxide was mixed onto the copper electrode by electropolymerization of aniline to form Polyaniline-graphene oxide / copper composite electrode (PANI-GO/Cu), and then nano-copper was electrodeposited on the surface of PANI-GO/Cu. Nanocrystalline copper / Polyaniline-graphene oxide / copper composite electrode (Cu/PANI-GO/Cu). FE-SEM XRD and FT-IR showed that the modified electrode had been formed. The electrode was used for the catalytic reduction of sulfur dioxide in aqueous solution. The results show that sulfur dioxide in aqueous solution can be effectively reduced to disulfite.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ424;X703
[Abstract]:Nano-Ni / Mg-Al layered bimetallic hydroxide / melamine-formaldehyde-ethylenediamine tetraoxaloacetic acid chelating resin / activated carbon composite (Ni/MgAl-LDHs/MFT/AC) was prepared by ultrasonic assisted coprecipitation. The structure and morphology of the composite were characterized by field emission scanning electron microscopy (FE-SEM) X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The results showed that on the surface of activated carbon containing MFT chelating resin, nano-nickel nanoparticles were distributed uniformly on the flowered IgAl-LDHs, MgAl-LDHs. The adsorption behavior of 2H6-dichlorophenol on Ni/MgAl-LDHs/MFT/AC was investigated. The adsorption mechanism was physical adsorption, which was in accordance with the quasi first order kinetic model, and the adsorption process was spontaneous endothermic reaction. Ni / MgAl-LDHs / MFT / AC can be successfully used in the degradation of waste water (methyl orange malachite green and methylene blue). Using copper foam electrode as the carrier, graphene oxide was mixed onto the copper electrode by electropolymerization of aniline to form Polyaniline-graphene oxide / copper composite electrode (PANI-GO/Cu), and then nano-copper was electrodeposited on the surface of PANI-GO/Cu. Nanocrystalline copper / Polyaniline-graphene oxide / copper composite electrode (Cu/PANI-GO/Cu). FE-SEM XRD and FT-IR showed that the modified electrode had been formed. The electrode was used for the catalytic reduction of sulfur dioxide in aqueous solution. The results show that sulfur dioxide in aqueous solution can be effectively reduced to disulfite.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ424;X703
【共引文献】
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