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Bifunctional graphene oxide-cellulose nanofibril aerogel loaded with Fe(III) for the removal of cationic dye via simultaneous adsorption and Fenton oxidation

机译:双官能石墨烯氧化物 - 纤维素纳米纤维气体用Fe(III)负载,用于通过同时吸附和芬顿氧化去除阳离子染料

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摘要

A highly porous cellulose nanofibril (CNF) aerogel loaded with graphene oxide-iron(III) (GO-Fe) nanocomposites was produced and used for the treatment of methylene blue (MB) in aqueous solution. The CNF aerogel serves as an adsorbent for the dye, while the GO-Fe nanocomposites play a role in the decomposition of the dye via the Fenton oxidation reaction. The aerogel exhibits rapid adsorption performance (less than 10 min) for removing MB, with a maximum adsorption capacity of 142.3 mg g(-1). On the side of enhancing the MB removal, the GO in the GO-CNF nanocomposite aerogel was loaded with 1 wt% of Fe(III) to perform as a catalyst for the Fenton oxidation reaction. The MB continues to decolorize by 30.4% more after 24 h of the reaction process. Moreover, by performing Fenton oxidation for adsorbent regeneration, the adsorption capacity for nanocomposite adsorption was reduced by 52.2% after five cycles of adsorption-oxidation.
机译:制备含有石墨烯 - 铁(III)(GO-Fe)纳米复合材料的高度多孔纤维素纳米纤维(CNF)气凝胶,并用于在水溶液中处理亚甲基蓝(MB)。 CNF气凝胶用作染料的吸附剂,而Go-Fe纳米复合材料通过芬顿氧化反应在染料分解中起作用。 气凝胶显示出快速吸附性能(小于10分钟),用于去除MB,最大吸附容量为142.3mg g(-1)。 在增强Mb的去除方面,Go-CNF纳米复合气体的Go载入1wt%的Fe(III)以作为芬顿氧化反应的催化剂进行。 在反应过程24小时后,MB继续脱色30.4%。 此外,通过对吸附剂进行芬顿氧化,在吸附 - 氧化五个循环后,纳米复合吸附的吸附能力降低了52.2%。

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  • 来源
    《RSC Advances》 |2016年第24期|共7页
  • 作者单位

    Univ Kebangsaan Malaysia Fac Sci &

    Technol Sch Appl Phys Bioresources &

    Biorefinery Lab Bangi 43600 Selangor Malaysia;

    Univ Kebangsaan Malaysia Fac Sci &

    Technol Sch Appl Phys Bioresources &

    Biorefinery Lab Bangi 43600 Selangor Malaysia;

    Univ Kebangsaan Malaysia Fac Sci &

    Technol Sch Appl Phys Bioresources &

    Biorefinery Lab Bangi 43600 Selangor Malaysia;

    Univ Kebangsaan Malaysia Fac Sci &

    Technol Sch Appl Phys Bioresources &

    Biorefinery Lab Bangi 43600 Selangor Malaysia;

    Univ Kebangsaan Malaysia Fac Sci &

    Technol Sch Appl Phys Bioresources &

    Biorefinery Lab Bangi 43600 Selangor Malaysia;

    Univ Kebangsaan Malaysia Fac Sci &

    Technol Sch Appl Phys Bioresources &

    Biorefinery Lab Bangi 43600 Selangor Malaysia;

    Univ Kebangsaan Malaysia Fac Sci &

    Technol Sch Appl Phys Bioresources &

    Biorefinery Lab Bangi 43600 Selangor Malaysia;

    Univ Malaysia Kelantan Fak Agro Ind Sumber Asli Karung Berkunci 36 Kota Baharu 16100 Kelantan Malaysia;

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

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