• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Influence of physicochemical-​electronic properties of transition metal ion doped polycrystalline titania on the photocatalytic degradation of Indigo Carmine and 4-​nitrophenol under UV​/solar light
【2h】

Influence of physicochemical-​electronic properties of transition metal ion doped polycrystalline titania on the photocatalytic degradation of Indigo Carmine and 4-​nitrophenol under UV​/solar light

机译：过渡金属离子掺杂多晶二氧化钛物理化学 - 电子性质对紫外/太阳光下靛蓝胭脂红和4-硝基苯酚光催化降解的影响

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To understand the role of dopant inside TiO2 matrix, anatase TiO2 was doped with transition metal ions like Mn2+, Fe3+, Ru3+ and Os3+ having unique half filled electronic configuration and their photocatalytic activity was probed in the degrdn. of Indigo Carmine (IC) and 4-​nitrophenol (NP) under UV​/solar light. For comparison, TiO2 was also doped with V5+, Ni2+ and Zn2+ metal ions having d0, d8 and d10 electronic configuration resp. Irresp. of excitation source UV​/solar light and nature of the org. pollutant, photocatalytic activities of doped photocatalysts followed the order: Mn2+-​TiO2 > Fe3+-​TiO2 > Ru3+-​TiO2 ≥ Os3+-​TiO2 > Zn2+-​TiO2 > V5+-​TiO2 > Ni2+-​TiO2 at an optimum concn. of dopant. Based on the exptl. results obtained, it is proposed that the existence of dopant with half filled electronic configuration in TiO2 matrix which is known to enhance the photocatalytic activity is not universal! Rather it is a complex function of several physicochem.-​electronic properties of doped titania. Enhanced photocatalytic activity of Mn2+ (0.06 at.​%)​-​TiO2 was attributed to the combined factors of high pos. redn. potential of Mn2+/Mn3+ pairs, synergistic effects in the mixed polymorphs of anatase and rutile, smaller crystallite size with high intimate contact between two phases and favorable surface structure of the photocatalyst. Despite the intense research devoted to transition metal ion doped TiO2, it is rather difficult to make unifying conclusion which is highlighted in this study.
机译：为了了解掺杂剂在TiO2基质中的作用，将锐钛矿型TiO2掺杂了具有独特的半填充电子构型的过渡金属离子，如Mn2 +，Fe3 +，Ru3 +和Os3 +，并在脱胶剂中探究了它们的光催化活性。在紫外线/太阳光下对靛蓝胭脂红（IC）和4-硝基苯酚（NP）的分析为了比较，TiO 2还掺杂有分别具有电子结构d0，d8和d10的V5 +，Ni2 +和Zn2 +金属离子。 Irresp。激发源紫外线/太阳能和组织的性质污染物，掺杂光催化剂的光催化活性依次为：Mn2 + -TiO2> Fe3 + -TiO2> Ru3 + -TiO2≥Os3 + -TiO2> Zn2 + -TiO2> V5 + -TiO2> Ni2 + -TiO2。的掺杂剂。基于exptl。结果表明，已知在TiO2基体中存在具有半填充电子构型的掺杂剂并不是普遍存在的！相反，它是掺杂二氧化钛几种物理化学性质的复杂函数。 Mn2 +（0.06 at。％）-TiO2的增强的光催化活性归因于高pos的综合因素。重做。 Mn2 + / Mn3 +对的电势，锐钛矿和金红石混合多晶型物的协同效应，较小的晶粒尺寸以及两相之间的紧密接触以及光催化剂的有利表面结构。尽管对过渡金属离子掺杂的TiO2进行了大量研究，但很难得出统一的结论，这一点在本研究中得到了强调。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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