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Optimization of operating conditions in the purification of graphite oxide dispersions

  • Materials (Organic, Inorganic, Electronic, Thin Films)
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Abstract

In the graphite oxide (GO) suspension purification process, some metallic impurities in GO cannot be separated. The residual metallic impurities dominate graphite oxide properties and have a negative influence on applications. Therefore, the removal of metallic impurities from graphite oxide has been brought into focus now. Single factor experiments and orthogonal experiments are used to get the optimal purification condition. The results show that purification agent, temperature, stirring intensity and contact time affect the purification degree, and the purification agent is the most important element for the purification efficiency. The optimal purification condition is 10% hydrochloric acid (H10), 20 °C, 0 rpm and 60 min. Besides, the theoretical stage is calculated by the mass conservation equation and distribution balance equation and the minimum stage is 3 under the optimal purification condition.

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Authors and Affiliations

  1. School of Chemical Engineering &Technology, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, P. R. China

    Wei Tan, Ying Liu, Liyan Liu, Ranhao Xing & Guorui Zhu

Authors
  1. Wei Tan
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  2. Ying Liu
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  3. Liyan Liu
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  4. Ranhao Xing
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  5. Guorui Zhu
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Correspondence to Guorui Zhu.

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Tan, W., Liu, Y., Liu, L. et al. Optimization of operating conditions in the purification of graphite oxide dispersions. Korean J. Chem. Eng. 33, 3251–3257 (2016). https://doi.org/10.1007/s11814-016-0164-9

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  • DOI: https://doi.org/10.1007/s11814-016-0164-9

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