• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Cauliflower-like Ni/NiO and NiO architectures transformed from nickel alkoxide and their excellent removal of Congo red and Cr(VI) ions from water
【24h】

Cauliflower-like Ni/NiO and NiO architectures transformed from nickel alkoxide and their excellent removal of Congo red and Cr(VI) ions from water

机译：从氧化镍醇盐转化的花椰菜状Ni / NiO和Nio架构和它们优异地从水中除去刚果红色和Cr（vi）离子

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

Cauliflower-like nickel alkoxide, Ni/NiO and NiO architectures were synthesized via a reflux route using NaBH4-EG as alkaline precipitant. The as-prepared powders were characterized by XRD, FESEM, TEM, HRTEM, and N-2 adsorption/desorption isotherms. The results show that the nickel alkoxide is made up of smooth spherical building blocks with diameters of about 500 nm that aggregate interactively to form whole 3D structures. The Ni/NiO and NiO architectures can be obtained by the direct thermal transformation from nickel alkoxide precursor at 300 degrees C and 600 degrees C, respectively, which are assembled by nanoparticles and composed of mesopores and macropore. The as-prepared three samples exhibit excellent performance for the removal of Congo red (CR) and Cr(VI) pollutant from aqueous solutions due to their hierarchical structures and high specific surface areas. The corresponding adsorption process fits well with the pseudo-second-order kinetics model and the Langmuir model. Compared with nickel alkoxide and NiO, Ni/NiO architectures show the highest adsorption performance, with the maximum capacity of 642.37 and 92.52 mg g(-1) for CR and Cr(VI), respectively. Further, the easily magnetic separation and reused clearly suggests that the Ni/NiO architectures can be explored as an excellent adsorbent for the removal of organic dye and heavy metal ions from aqueous solutions.
机译：菜花状镍醇盐，镍/氧化镍和NiO架构分别经由使用的NaBH 4-EG作为碱性沉淀回流路线合成。通过XRD，FESEM，TEM，HRTEM，和N-2吸附/解吸等温线所制备的粉末进行表征。结果表明，在镍的醇盐与直径的聚集交互以形成整个3D结构约500nm的由光滑球形积木组成。在Ni / NiO和氧化镍结构可以由从镍的醇盐前体的直接热变换分别在300摄氏度和600摄氏度，其由纳米颗粒组装和介孔和大孔组成而获得。所制备的三个样品显示出用于除去刚果性能优良红（CR）和Cr（VI）从水溶液中污染物由于它们的层次结构和高的比表面积。相应的吸附过程正好符合伪二阶动力学模型和Langmuir模型。有镍的醇盐和NiO，镍/氧化镍相比架构显示最高吸附性能，具有642.37和92.52毫克克的最大容量（-1），CR和分别的Cr（VI），。此外，容易磁分离，并明确重用表明镍/氧化镍架构可以被探索作为用于去除有机染料和从水溶液中的重金属离子的优异的吸附剂。

著录项

  • 来源
    《RSC Advances》 |2016年第105期|共9页
  • 作者

    Zhao Junfeng; Zha Jiachen; Lu Hongbin; Yang Cheng; Yan Kou; Meng Xiangkang;

  • 作者单位

    Nanjing Univ Coll Engn &

    Appl Sci Natl Lab Solid State Microstruct Inst Mat Engn Nanjing Jiangsu Peoples R China;

    Changshu Inst Technol Sch Chem &

    Mat Engn Changshu Peoples R China;

    Nanjing Univ Coll Engn &

    Appl Sci Natl Lab Solid State Microstruct Inst Mat Engn Nanjing Jiangsu Peoples R China;

    Changshu Inst Technol Sch Chem &

    Mat Engn Changshu Peoples R China;

    Changshu Inst Technol Sch Chem &

    Mat Engn Changshu Peoples R China;

    Nanjing Univ Coll Engn &

    Appl Sci Natl Lab Solid State Microstruct Inst Mat Engn Nanjing Jiangsu 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

相似文献

  • 外文文献
  • 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