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Novel carrageenan/reduced graphene Oxide/Ag composite as adsorbent for removal methylene blue from aqueous solution

Y. Zheng, J. Yang, R. Yang, A. Wang, B. Deng, F. Peng, Y. Peng, L. He, L. Fu*

*Corresponding author for this work

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    Abstract

    Carrageenan/reduced graphene oxide/Ag composite (CA/RGO/Ag) was synthesized by a wet chemical method at room temperature using carrageenan, graphene oxide and silver nitrate as starting materials. As-prepared composite was characterized by UV-vis spectroscopy, FTIR, SEM, and XRD. Results showed that the reduction of graphene oxide (GO) and silver nitrate was achieved simultaneously by addition of NaBH4. CA/RGO/Ag composite was used for adsorption of methylene blue (MB) from aqueous solution. The effect of parameters such as the ratio of GO and silver nitrate, contact time, pH, temperature, and mass of the composite has been investigated. The adsorption isotherm data could be well explained by Langmuir isotherm model. According to our results, the CA/RGO/Ag composite is a suitable adsorbent candidate for purifying of water pollution.

    Original languageEnglish
    Pages (from-to)349-357
    Number of pages9
    JournalDigest Journal of Nanomaterials and Biostructures
    Volume10
    Issue number2
    Publication statusPublished - Apr 2015

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 6 - Clean Water and Sanitation
      SDG 6 Clean Water and Sanitation

    Research Keywords

    • Adsorption
    • Carrageenan
    • Methylene blue
    • Reduced graphene oxide
    • Silver

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