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氧化程度对3D rGOs形貌结构及吸附性能的影响
引用本文:岳焕娟,孙红娟,彭同江,梁小毅,杨建召. 氧化程度对3D rGOs形貌结构及吸附性能的影响[J]. 非金属矿, 2017, 40(6)
作者姓名:岳焕娟  孙红娟  彭同江  梁小毅  杨建召
作者单位:1. 西南科技大学 环境与资源学院,四川 绵阳 621010;西南科技大学 固体废物处理与资源化教育部重点实验室,四川 绵阳 621010;西南科技大学 矿物材料及应用研究所,四川 绵阳 621010;2. 西南科技大学 固体废物处理与资源化教育部重点实验室,四川 绵阳 621010;西南科技大学 矿物材料及应用研究所,四川 绵阳 621010
基金项目:国家自然科学基金,四川省科技厅项目,西南科技大学研究生创新基金
摘    要:通过改变氧化剂用量制备不同氧化程度的氧化石墨(GO),经超声分散,水热还原制备出系列三维还原氧化石墨烯(3D r GOs),采用扫描电镜、X射线衍射、红外光谱、拉曼光谱和紫外可见分光光度计等分析测试手段研究了氧化程度对3D rGOs形貌结构、光谱特征和吸附性能的影响。结果表明:随着氧化程度的增加,水热还原产物在微观上由多层堆积的片状结构逐渐转向均匀多孔网状结构,最后转变为断裂碎片交联的网状结构。吸附容量随氧化程度的增加先增大后减小,当GO羟基含量最多而环氧基含量最少时,3D rGOs吸附性能最好,对罗丹明B、亚甲基蓝和甲基紫吸附量最高分别可达90.9、145.4和237.4 mg/g。

关 键 词:氧化程度  氧化石墨  三维还原氧化石墨烯  吸附性能

Effect of Oxidation Degree on 3DrGOs's Morphology,Structure and Adsorption Performance
Yue Huanjuan,Sun Hongjuan,Peng Tongjiang,Liang Xiaoyi,Yang Jianzhao. Effect of Oxidation Degree on 3DrGOs's Morphology,Structure and Adsorption Performance[J]. Non-metallic Mines, 2017, 40(6)
Authors:Yue Huanjuan  Sun Hongjuan  Peng Tongjiang  Liang Xiaoyi  Yang Jianzhao
Abstract:Series of three-dimensional reduction of graphene oxide was performed by the hydrothermal method. The precursor named graphite oxide with different oxidation degree was prepared by changing the dosage of oxidant, then ultrasonic dispersion. The effect of oxidation degree on the materials' morphology, structure, spectral characteristic and adsorption performance was investigated by scanning electron microscope, X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy and UV-Vis spectrophotometer. The results show that the 3D rGOs prepared by water thermal, with increasing of oxidation degree, its micro appearance gradually transformed from structure consists of sheets of multilayer accumulation to porous and reticulated structure, and turned to network structure crosslinked with fracted fragments ultimately. Series of adsorption capacity of 3D rGOs increases then decreases with the increase of the oxidation degree. 3D graphene adsorption performance was the best when graphite oxide who had the most hydroxyl and the least epoxy group, the maximum adsorption capacity to rhodamine B, methylene blue and methyl violet were 90.9, 145.4, and 237.4 mg/g respectively.
Keywords:different oxidation degree  graphite oxide  three-dimensional reduction of graphene oxide  adsorption performance
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