Preparation of Zirconium Oxide / Graphene Composites and their Adsorption Properties for PO43-
[1]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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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
38
Number of periods:
2017 04
Page number:
23-28
Column:
Public date:
2017-07-18
- Title:
- Preparation of Zirconium Oxide / Graphene Composites and their Adsorption Properties for PO43-
- CLC:
- -
- 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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