• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Ru(II)-polypyridyl complex-grafted silica nanohybrids: versatile hybrid materials for Raman spectroscopy and photocatalysis
【24h】

Ru(II)-polypyridyl complex-grafted silica nanohybrids: versatile hybrid materials for Raman spectroscopy and photocatalysis

机译：Ru（ii）-polypyridyl复合膜氧化硅纳米胺：用于拉曼光谱和光催化的多功能杂化材料

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

Ruthenium(II)-polypyridyl complex-grafted silica nanohybrids with and without silver nanoparticles (Ag NP) as core-shell nanohybrids were prepared by reacting with different coupling reagents 3-aminopropyl-trimethoxysilane (3-APTMS) and 3-iodopropyltrimethoxysilane (3-IPTMS). The morphological features of the resulting surface-grafted silica nanohybrids were studied using various electron microscopic techniques (TEM, STEM, SEM, EDS) and their chemical components were analysed using spectral techniques such as mass spectrometry, UV-vis, Fourier transform-infrared (FT-IR) spectroscopies and thermogravimetric analysis (TGA). Photoluminescence (PL) studies of the functionalized silica nanohybrids in the solution and solid states proved them to be luminescent nanohybrids. The molecular vibrational bands of the covalently-grafted Ru(II)-polypyridyl complexes on silica nanohybrids and Ag@SiO2 core-shell nanohybrids were studied using Raman spectroscopy. The obtained Ru(II)-polypyridyl complex-functionalized silica nanohybrids were utilized as photocatalysts for Rhodamine 6G degradation under visible light illumination. The presence of a thick SiO2 nanoshell over the Ag NP surface limits direct charge transfer to the covalently-grafted Ru(II)-polypyridyl complex and the Ag NPs are proved as a plasmonic photosensitizer for enhanced Rhodamine 6G degradation, and molecular probing substrates for Raman spectroscopy. Among functionalized silica nanohybrids, the Ag@SiO2 core-shell nanohybrid showed enhanced photocatalytic activity towards Rhodamine 6G degradation compared to other functionalized silica nanohybrids without Ag NP cores and bare MCM-41 SiO2 NPs.
机译：钌（II）配合物-polypyridyl接枝硅石纳米复合物具有和不具有银纳米颗粒（银NP）通过用不同偶联剂3-氨基丙基 - 三甲氧基硅烷（3-APTMS）和3- iodopropyltrimethoxysilane反应制备核 - 壳纳米复合物（3- IPTMS）。使用各种电子显微镜技术（TEM，STEM，SEM，EDS）和它们的化学组分用光谱技术如质谱，紫外 - 可见，傅里叶变换红外（分析研究了所得到的表面接枝的二氧化硅纳米复合物的形态学特征FT-IR）光谱和热重分析（TGA）。在溶液和固体状态下的官能化的二氧化硅纳米复合物的光致发光（PL）的研究证明了它们是发光的纳米复合物。共价接枝的钌的分子振动带（II）-polypyridyl使用拉曼光谱研究了硅纳米复合物和Ag @ -SiO 2芯 - 壳纳米复合物的复合物。将所得到的钌（II）配合物-polypyridyl官能化的二氧化硅纳米复合物被用作下可见光照明的光催化剂为若丹明6G降解。一个厚的SiO 2纳米壳在银NP表面的存在限制直接电荷转移到共价接枝的Ru（II）-polypyridyl络合物和银纳米颗粒被证明作为用于增强的若丹明6G劣化的电浆光敏剂和分子探测底物的拉曼光谱。其中官能化的二氧化硅纳米复合物，相对于其他官能化二氧化硅纳米复合物不含Ag NP核和裸MCM-41的SiO 2纳米颗粒银@ -SiO 2芯 - 壳纳米杂化物表现出增强的光催化活性对罗丹明6G降解。

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