[1]史春燕,范冰冰,李娅娅,等.锆氧化物/石墨烯的制备及其对PO43-的吸附性能[J].郑州大学学报(工学版),2017,38(04):23-28.[doi:10.13705/j.issn.1671-6833.2017.01.009]
　Shi Chunyan,Fan Bingbing,Li Yaya,et al.Preparation of Zirconium Oxide / Graphene Composites and their Adsorption Properties for PO43-[J].Journal of Zhengzhou University (Engineering Science),2017,38(04):23-28.[doi:10.13705/j.issn.1671-6833.2017.01.009]
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锆氧化物/石墨烯的制备及其对PO43-的吸附性能()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
38
期数:
2017年04期
页码:
23-28
栏目:
出版日期:
2017-07-18

文章信息/Info

Title:
Preparation of Zirconium Oxide / Graphene Composites and their Adsorption Properties for PO43-
作者:
史春燕; 范冰冰; 李娅娅; 胡永宝; 张锐
1.郑州大学材料科学与工程学院,河南郑州,450001;2.郑州大学材料科学与工程学院,河南郑州450001
Author(s):
Shi Chunyan1; Fan Bingbing1; Li Yaya1; Hu Yongbao1; Zhang Rui2
1. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001;2. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001 , Henan
关键词:
石墨烯; 氢氧化锆; 氧化锆; 吸附; PO43-
Keywords:
DOI:
10.13705/j.issn.1671-6833.2017.01.009
文献标志码:
A
摘要:
采用改进的Hummers法制备氧化石墨烯,采用超声-搅拌-共沉淀法制备出氢氧化锆/石墨烯(Zr(OH)4/rGO)复合材料,并利用氢氧化锆/石墨烯前驱体采用水热法制备氧化锆/石墨烯(ZrO2/rGO)复合材料.通过Zr(0H)4/rGO、ZrO2/rGO对磷酸根的吸附性能研究表明:两种吸附剂材料对PO43-的吸附容量均随着pH值的升高而降低,吸附容量均随PO43-浓度与溶液温度升高而升高.当pH值为2时,Zr(OH)4/rGO、ZrO2/rGO对PO43-最大吸附容量分别为81.84 mg/g、63.58 mg/g.Zr(OH)4/rGO与ZrO2/rGO样品对PO43-吸附过程均符合准二级动力学方程,等温吸附过程均满足Langmuir吸附等温方程.Zr(OH)4/rGO的再利用吸附PO43-容量有所下降,而ZrO2/rGO再生后吸附PO43-容量与初次吸附性能相当.
Abstract:
In this work,graphene oxide (GO) was prepared by an improved Hummers method.Zirconia/graphene composites (ZrO2/rGO) were rapidly synthesized by hydrothermal method with Zr(OH)4/rGO as precursor prepared by ultrasound-stirred-coprecipitation.The adsorption capacity of Zr (OH) 4/rGO and ZrO2/rGO composites decreased with the increase of pH value and increased with the increase of phosphate concentration and the solution temperature.The maximum adsorption capacities of Zr (OH)4/rGO and ZrO2/rGO composites were 81.84 mg/g and 63.58 mg/g respectively at pH 2.0.The adsorption kinetics of these two adsorbents accorded with the pseudo-second-order model and isothermal adsorption complied with the Langmuir isotherm equation.The results of its recycling properties showed the adsorption capacity decreased for the Zr (OH) 4/rGO samples,while ZrO2/rGO samples were almost the same as the initial adsorption performance.

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