• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Brookite Formation in TiO_2-Ag Nanocomposites and Visible-Light-Induced Tern plated Growth of Ag Nanostructures in TiO_2
【24h】

Brookite Formation in TiO_2-Ag Nanocomposites and Visible-Light-Induced Tern plated Growth of Ag Nanostructures in TiO_2

机译：TiO_2-Ag纳米复合材料中的板钛矿形成和可见光诱导的TiO_2中Ag纳米结构的镀银燕鸥生长

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

TiO_2-Ag-nanocomposites exhibit various desirable properties that make them suitable for a variety of applications, for example in photocatalysis and as bactericidal coatings. In this work, a new method for processing TiO_2-Ag nanocomposites is presented. The nanocomposite films are fabricated from one precursor solution with high silver loading of up to 50%. The resulting films exhibit a microstructure consisting of TiO_2 Ag_xO nanocomposites with a largely XRD-amorphous TiO_2 matrix containing brookite nanocrystals. This specific microstructure absorbs in the visible range so that photoreduction of Ag ions can be accomplished by using visible light. The thin films can be patterned using simple shadow masks. The illuminated areas show a high density of self-organized nanoparticles (SNPs) and nanorods (SNRs), which are templated by the TiO_2 porous network. The particle size can be tuned by varying the irradiation time. Most of the SNPs and SNRs form faceted crystals, which are mostly a combination of {111} and {110}. The application of these films as substrates for surface-enhanced Raman scattering is shown. Enhancement factors as high as 4.6 × 10~6 could be obtained using rhodamine 6G dye molecules. More applications should involve photocatalytic water purification using visible light.
机译：TiO_2-Ag-纳米复合材料表现出各种理想的性能，使其适用于多种应用，例如在光催化和杀菌涂层中。在这项工作中，提出了一种处理TiO_2-Ag纳米复合材料的新方法。纳米复合材料薄膜是由一种前体溶液制成的，其银载量高达50％。所得的膜显示出由TiO_2Ag_xO纳米复合物组成的微观结构，该复合物具有主要的XRD无定形的含有板钛矿纳米晶体的TiO_2基体。这种特定的微观结构在可见光范围内吸收，因此可以通过使用可见光实现Ag离子的光还原。可以使用简单的荫罩对薄膜进行构图。照明区域显示出高密度的自组织纳米颗粒（SNP）和纳米棒（SNR），它们是由TiO_2多孔网络模板化的。可以通过改变照射时间来调节粒径。大多数SNP和SNR形成多面晶体，它们大多是{111}和{110}的组合。显示了这些膜作为表面增强拉曼散射的基底的应用。罗丹明6G染料分子可获得高达4.6×10〜6的增强因子。更多应用应涉及使用可见光的光催化水净化。

著录项

  • 来源
    《Advanced Functional Materials》 |2010年第3期|377-385|共9页
  • 作者

    Mohammed Es-Souni; Martha Es-Souni; Salah Habouti; Nicole Pfeiffer; Abdelilah Lahmar; Matthias Dietze; Claus-Henning Solterbeck;

  • 作者单位

    Institute for Materials & Surface Technology University of Applied Sciences Grenzstrasse 3, D-24149 Kiel (Germany);

    Clinic of Orthodontics Christian-Albrechts University Arnold-Heller-Strasse 16, 24105 Kiel (Germany);

    Institute for Materials & Surface Technology University of Applied Sciences Grenzstrasse 3, D-24149 Kiel (Germany);

    Institute for Materials & Surface Technology University of Applied Sciences Grenzstrasse 3, D-24149 Kiel (Germany);

    Institute for Materials & Surface Technology University of Applied Sciences Grenzstrasse 3, D-24149 Kiel (Germany);

    Institute for Materials & Surface Technology University of Applied Sciences Grenzstrasse 3, D-24149 Kiel (Germany);

    Institute for Materials & Surface Technology University of Applied Sciences Grenzstrasse 3, D-24149 Kiel (Germany);

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 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