• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Template-free synthesis of complicated double-wall Cu2O hollow spheres with enhanced visible photocatalytic activities
【24h】

Template-free synthesis of complicated double-wall Cu2O hollow spheres with enhanced visible photocatalytic activities

机译：复杂双壁Cu2O空心球体的无模板合成，具有增强的可见光催化活动

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

In this study, complicated double-wall Cu2O hollow spheres have been successfully prepared by a facile hydrothermal process in a ternary solvent system including water, ethanol and glycerol. The obtained double-wall Cu2O hollow spheres have an average diameter of similar to 15 mu m and the spheres are assembled by irregular particles with an average diameter of similar to 500 nm. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to characterize the structure of the synthesized products. The formation mechanism of the double-wall Cu2O hollowspheres is related to a self-assembly process accompanied by an Ostwald ripening process, during which the Cu2O spheres are first formed through the self-assembly of Cu2O nanoparticles and then gradually develop into double-wall hollow interiors by an Ostwald ripening process. Furthermore, the photocatalytic properties of the as-obtained samples were investigated. It is found that such unique double-wall hollow architecture exhibits excellent photocatalytic efficiency for the degradation of MO under visible-light illumination, which is up to 90.3% and this photocatalytic efficiency is higher than the Cu2O particles with irregular spherical structure (74.2%). The high photocatalytic performance of the double-wall Cu2O hollow spheres is associated with the fact that there are plenty of nanopores which exist in the spheres, serving as transport paths for small molecules.
机译：在该研究中，通过在包括水，乙醇和甘油的三元溶剂系统中，通过容易的水热方法成功地制备了复杂的双壁Cu2O空心球。所获得的双壁Cu2O中空球体的平均直径与15μmm相似，球体通过平均直径的不规则颗粒组装，其平均直径与500nm相似。扫描电子显微镜（SEM），X射线衍射（XRD）和透射电子显微镜（TEM）用于表征合成产物的结构。双壁Cu2O空心式的形成机制与伴有OSTWALD成熟过程的自组装过程有关，在此期间首先通过Cu2O纳米颗粒的自组装形成Cu2O球体，然后逐渐发展成双壁空腔OSTWALD成熟过程内部。此外，研究了如获得的样品的光催化性质。结果发现，如此独特的双壁空心结构表现出优异的光催化效率，用于在可见光照射下的MO降解，其高达90.3％，这种光催化效率高于Cu2O颗粒，具有不规则的球形结构（74.2％） 。双壁Cu2O中空球体的高光催化性能与球体中存在的大量纳米孔相关的事实有关，用作小分子的运输路径。

著录项

  • 来源
    《RSC Advances》 |2015年第11期|共5页
  • 作者

    Ma Zhong-Chao; Wang Li-Min; Chu De-Qing; Sun Hong-Ming; Wang Ao-Xuan;

  • 作者单位

    Tianjin Polytech Univ Sch Mat Sci &

    Engn Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci &

    Engn Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Environm &

    Chem Engn Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Environm &

    Chem Engn Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Environm &

    Chem Engn Tianjin 300387 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
  • 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