• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Chain-network anatase/TiO_2 (B) thin film with improved photocatalytic efficiency
【24h】

Chain-network anatase/TiO_2 (B) thin film with improved photocatalytic efficiency

机译：改进的光催化效率的链网络锐钛矿/ TiO_2（B）薄膜

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

A 3-dimensional chain-network anatase/TiO_2 (B) was obtained via the basic hydrothermal treatment of a sandwich Ti/TiO_2/Ti film on a glass substrate that was prepared from 16 nm anatase TiO_2 nanoparticles. The Ti film was converted to the TiO_2 (B) phase in a Teflon vessel containing a 10M NaOH aqueous solution that was encapsulated in a stainless-steel autoclave and heated at 130 °C for 2 h. The TiO_2 (B) then served as a binder layer that enabled the formation of pearl-necklace chains made of anatase TiO_2 nanoparticles, and these chain-like structures thoroughly interpenetrated into the textured layer. Decomposition tests using methylene blue indicated that the chain-network anatase/TiO_2 (B) mixed-phase film had a photocatalytic half-life that was 0.84 and 0.69 times shorter than those of as-prepared anatase TiO_2 and P25, respectively. In addition, the intensity of the room temperature photoluminescence spectra of anatase TiO_2 was 2.55-fold higher than that of the chain-network anatase/TiO_2 (B). We thus conclude that the remarkable photocatalytic activity of the chainnetwork anatase/TiO_2 (B) is attributed to the chain-network structural characteristics and a synergistic effect of the matching band gap potentials, which increases the transfer of photogenerated electrons and reduces electron-hole recombination.
机译：通过对由16 nm锐钛矿型TiO_2纳米粒子制备的玻璃基板上的夹心Ti / TiO_2 / Ti膜进行基本的水热处理，获得了三维链网络锐钛矿型/ TiO_2（B）。在装有10M NaOH水溶液的Teflon容器中，将Ti膜转化为TiO_2（B）相，该容器封装在不锈钢高压釜中，并在130°C下加热2 h。然后，TiO_2（B）用作粘合剂层，该粘合剂层能够形成由锐钛矿型TiO_2纳米颗粒制成的珍珠项链链，并且这些链状结构彻底渗透到纹理层中。使用亚甲基蓝的分解测试表明，链状网络锐钛矿/ TiO_2（B）混合相膜的光催化半衰期分别比制备的锐钛矿TiO_2和P25短0.84和0.69倍。另外，锐钛矿型TiO_2的室温光致发光光谱强度比链状网络锐钛矿/ TiO_2的强度高2.55倍（B）。因此，我们得出结论，链网络锐钛矿/ TiO_2（B）的显着光催化活性归因于链网络结构特征和匹配带隙电势的协同效应，从而增加了光生电子的转移并减少了电子-空穴的重组。

著录项

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