• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mikrochimica Acta: An International Journal for Physical and Chemical Methods of Analysis >Plasmonic hot electron transfer-induced multicolor MoO3-x-based chromogenic system for visual and colorimetric determination of silver(I)
【24h】

Plasmonic hot electron transfer-induced multicolor MoO3-x-based chromogenic system for visual and colorimetric determination of silver(I)

机译：等离子体热电子转移诱导的多色MOO3-X X基发色体系，用于银（I）的视觉和比色测定

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 plasmonic hot electron transfer-induced multicolor chromogenic system is described for label-free visual colorimetric determination of silver(I). The chromogenic system consists of plasmonic MoO3-x nanosheets with oxygen vacancies and Ag(I). Under white light-emitting diode (LED) excitation, energetic hot hole-electron pairs are formed on the surface of the blue MoO3-x nanosheets. The resulting hot electrons are transferred to Ag(I) upon which it becomes reduced. This results in the generation of yellow silver nanoparticles. Simultaneously, the hot holes lead to the oxidation of the MoO3-x nanosheets to yield colorless MoO3 nanosheets. Similarly, energetic hot hole-electron pairs can also be generated on the surface of AgNPs under white LED irradiation, which contributes to the reduction of Ag(I) and the oxidation of MoO3-x. Overall, a colorful transition from blue to green and finally to yellow can be observed. This multicolor chromogenic system was applied to the colorimetric determination of Ag(I) in the 33-200 mu M concentration range and a 0.66 mu M limit of detection, at analytical wavelengths of 430 and 760 nm. The method also is amenable to semi-quantitative visual determination of Ag(I).
机译：描述了对无标记的视觉比色法测定银（i）的抗质子热电子转移诱导的多色发色体系。发色系统由具有氧空缺和Ag（i）的等离子体MOO3-X纳米片组成。在白色发光二极管（LED）励磁下，在蓝色MOO3-X纳米片的表面上形成精力充沛的热孔电子对。将所得的热电子转移到Ag（I）上变化。这导致生成黄色银纳米颗粒。同时，热孔导致MOO3-X纳米蛋白酶的氧化，以产生无色MOO3纳米蛋白酶。类似地，在白色LED照射下，也可以在AgNP的表面上产生活性热孔电子对，这有助于Ag（I）的还原和Moo3-x的氧化。总体而言，可以观察到从蓝色到绿色的彩色过渡，最终可以达到黄色。将该多色发色体系应用于33-200μm浓度范围内的Ag（I）的比色测定，在430和760nm的分析波长下检测到0.66μm。该方法还可用于Ag（I）的半定量视觉测定。

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