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Graphene-decorated porous ceramics for efficient removal of Cr(VI)

机译:石墨烯装饰多孔陶瓷,用于高效去除Cr(VI)

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摘要

Porous ceramics (such as activated alumina (AA)) is a common adsorbent material in water purification. Its purifying capacity can be greatly improved through modification of porous ceramics. In this paper, a facile method has been established to prepare a graphene-decorated porous ceramic (GDPC) material. Citric acid (CA) was absorbed into the inner surface of the porous ceramics and transformed to graphene via sintering. The as-prepared material showed excellent adsorption capacity for chromium (Cr(VI)) over a wide range of pH (2 to 10) compared with the blank sample. The maximum uptake capacity for Cr(VI) exceed 699.43 mg g(-1). UV and ICP-OES tests indicated that chromium ions in aqueous solution were completely removed via the GDPC. Thus the GDPC could be a potential adsorbent for the environmental cleanup, especially for the chromium-contained wastewater disposal.
机译:多孔陶瓷(例如活性氧化铝(AA))是水纯化的常见吸附材料。 通过对多孔陶瓷的改变,可以大大提高其净化能力。 在本文中,已经建立了一种容易方法来制备石墨烯装饰的多孔陶瓷(GDPC)材料。 柠檬酸(CA)被吸收到多孔陶瓷的内表面中,并通过烧结转化为石墨烯。 与空白样品相比,AS制备的材料显示出杂铬(Cr(vi))的优异吸附能力(Cr(vi))。 Cr(VI)的最大摄取容量超过699.43mg(-1)。 UV和ICP-OES测试表明,通过GDPC完全除去水溶液中的铬离子。 因此,GDPC可以是环境清理的潜在吸附剂,特别是对于包含铬的废水处理。

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  • 来源
    《RSC Advances》 |2015年第81期|共9页
  • 作者

    Wang Shi; Yang Wen; Chen Guohua;

  • 作者单位

    Huaqiao Univ Dept Polymer Sci &

    Engn Xiamen 361021 Peoples R China;

    Huaqiao Univ Dept Polymer Sci &

    Engn Xiamen 361021 Peoples R China;

    Huaqiao Univ Dept Polymer Sci &

    Engn Xiamen 361021 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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