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首页> 外文期刊>Journal of Hazardous Materials >From spent Mg/Al layered double hydroxide to porous carbon materials
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From spent Mg/Al layered double hydroxide to porous carbon materials

机译：从废Mg / Al层状双氢氧化物到多孔碳材料

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摘要

Adsorption has been considered as an efficient method for the treatment of dye effluents, but proper disposal of the spent adsorbents is still a challenge. This work attempts to provide a facile method to reutilize the spent Mg/Al layered double hydroxide (Mg/Al-LDH) after the adsorption of orange II (Oil). Herein, the spent hybrid was carbonized under the protection of nitrogen, and then washed with acid to obtain porous carbon materials. Thermogravimetric analysis results suggested that the carbonization could be well achieved above 600 degrees C, as mass loss of the spent hybrid gradually stabilized. Therefore, the carbonization process was carried out at 600, 800, and 1000 degrees C, respectively. Scanning electron microscope showed that the obtained carbon materials possessed a crooked flaky morphology. Nitrogen adsorption-desorption results showed that the carbon materials had large BET surface area and pore volume, e.g., 1426 m(2)/g and 1.67 cm(3)/g for the sample carbonized at 800 degrees C. Moreover, the pore structure and surface chemistry compositions were tunable, as they were sensitive to the temperature. Toluene adsorption results demonstrated that the carbon materials had high efficiency in toluene removal. This work provided a facile approach for synthesizing porous carbon materials using spent Mg/Al-LDH. (C) 2015 Elsevier B.V. All rights reserved.
机译：吸附被认为是处理染料流出物的有效方法，但是如何正确处理用过的吸附剂仍然是一个挑战。这项工作试图提供一种简便的方法，以吸附橙色II（油）后重新使用用过的Mg / Al层状双氢氧化物（Mg / Al-LDH）。在此，用过的杂化体在氮气保护下碳化，然后用酸洗涤以获得多孔碳材料。热重分析结果表明，随着废杂料的质量损失逐渐稳定，在600摄氏度以上可以很好地实现碳化。因此，碳化过程分别在600、800和1000℃下进行。扫描电子显微镜显示，所获得的碳材料具有弯曲的片状形态。氮吸附-解吸结果表明，碳材料具有较大的BET表面积和孔体积，例如800℃碳化的样品的1426 m（2）/ g和1.67 cm（3）/ g。表面化学成分可调节，因为它们对温度敏感。甲苯吸附结果表明，碳材料具有较高的甲苯去除效率。这项工作为使用废Mg / Al-LDH合成多孔碳材料提供了一种简便的方法。 （C）2015 Elsevier B.V.保留所有权利。

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  • 来源
    《Journal of Hazardous Materials》 |2015年第30期|572-580|共9页
  • 作者

    Laipan Minwang; Zhu Runliang; Chen Qingze; Zhu Jianxi; Xi Yunfei; Ayoko Godwin A.; He Hongping;

  • 作者单位

    Chinese Acad Sci, Guangdong Prov Key Lab Mineral Phys & Mat Res & D, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Guangdong Prov Key Lab Mineral Phys & Mat Res & D, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China;

    Chinese Acad Sci, Guangdong Prov Key Lab Mineral Phys & Mat Res & D, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Guangdong Prov Key Lab Mineral Phys & Mat Res & D, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China;

    Queensland Univ Technol, Fac Sci & Engn, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia;

    Queensland Univ Technol, Fac Sci & Engn, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia;

    Chinese Acad Sci, Guangdong Prov Key Lab Mineral Phys & Mat Res & D, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Calcined layered double hydroxide; Dye effluents treatment; Spent adsorbent recycling; Porous carbon material; Volatile organic compound;

    机译：煅烧层状双氢氧化物;染料废水处理;废吸附剂回收;多孔碳材料;挥发性有机化合物;

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