• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Hydroxyapatite conjugated graphene oxide nanocomposite: a new sight for significant applications in adsorption
【24h】

Hydroxyapatite conjugated graphene oxide nanocomposite: a new sight for significant applications in adsorption

机译：羟基磷灰石共轭石墨烯氧化物纳米复合材料：用于吸附中的重要应用的新视线

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Great efforts have been made to develop efficient adsorbents in recent years. In this study, graphene oxide (GO) was synthesized and the surface chemistry of GO was modified by means of hydroxyapatite (HAP) conjugation in order to increase the number of active sites responsible for cationic dye adsorption. The obtained HAP conjugated GO nanocomposites were characterized using various techniques such as FTIR, RAMAN, XRD, TGA, FESEM, BET surface area and AFM. Herein, malachite green (MG) was used as a model dye and the effect of several parameters, including time, pH, temperature, adsorbent dose, and MG concentration, on the adsorption were investigated. The isotherm, kinetic and thermodynamic parameters were measured. The adsorption of MG was best described by the Freundlich isotherm with a pseudo second order kinetic model. In addition, the removal efficiency was maintained at 82% even in the fourth cycle, which supported the reusability and stability of the fabricated nanocomposite for cationic dye adsorption from an aqueous medium.
机译：近年来，已经努力开发有效的吸附剂。在该研究中，合成了石墨烯（GO），通过羟基磷灰石（HAP）缀合改性去的表面化学，以增加负责阳离子染料吸附的活性位点的数量。使用各种技术，如FTIR，拉曼，XRD，TGA，FESEM，BET表面积和AFM，表征了所得的HAP缀合的去纳米复合材料。在此，研究了孔雀石绿（Mg）作为模型染料，研究了吸附在吸附上的几种参数，包括时间，pH，温度，吸附剂剂量和Mg浓度的效果。测量等温，动力学和热力学参数。使用伪二阶动力学模型的Freundlich等温线最佳地描述MG的吸附。此外，即使在第四个循环中，去除效率也保持在82％，这支持从水性介质的阳离子染料吸附的制造纳米复合材料的可重复使用性和稳定性。

著录项

  • 来源
    《RSC Advances》 |2015年第117期|共10页
  • 作者

    Mahto Triveni Kumar; Pandey Subhash Chandra; Chandra Soumen; Kumar Amit; Sahu Sumanta Kumar;

  • 作者单位

    Indian Sch Mines Dept Appl Chem Dhanbad 826004 Jharkhand India;

    Indian Sch Mines Dept Appl Chem Dhanbad 826004 Jharkhand India;

    Indian Sch Mines Dept Appl Chem Dhanbad 826004 Jharkhand India;

    Indian Sch Mines Dept Appl Chem Dhanbad 826004 Jharkhand India;

    Indian Sch Mines Dept Appl Chem Dhanbad 826004 Jharkhand India;

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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号