• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Plasmon induced Au particle and surface oxidation co-decorated BiOIO3 heteronanostructures with highly promoted photocatalysis and photoelectrochemical properties
【24h】

Plasmon induced Au particle and surface oxidation co-decorated BiOIO3 heteronanostructures with highly promoted photocatalysis and photoelectrochemical properties

机译：等离子体诱导的金粒子和表面氧化共修饰的BiOIO3异质结构，具有高度促进的光催化和光电化学性能

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

Plasmon induced Au nanoparticle and surface oxidation induced co-decorated BiOIO3 heterostructured nanocomposites have been developed via a facile in situ photosynthesis route. The structural and optical properties of the as-prepared photocatalysts were systematically characterized by XRD, XPS, TEM, SEM, UV-Vis DRS and PL. Fascinatingly, the introduction of Au nanoparticles induced not only an enhanced photoabsorption in the visible region, but also the microstructural variation of BiOIO3. The oxidative effect of HAuCl4 resulted in the formation of Bi4+/Bi5+, which led to the increased specific surface area of the products. The photocatalysis and photoelectrochemical properties of the samples were investigated by monitoring the photodecomposition of Rhodamine B (RhB) and photocurrent generation under UV-visible light illumination. The results revealed that Au@BiOIO3 presents drastically enhanced photoreactivity compared with the pristine BiOIO3. The highly improved photochemical properties are ascribed to the synergic contribution of the highly promoted generation and separation of charge carriers induced by the surface plasmon resonance (SPR) effect of Au particles, surface chemical state change, as well as the significantly high surface area that provides more reactive sites. These results are corroborated by the electrochemical impedance spectra (EIS), bode-phase spectra, PL spectra, active trapping and DMPO-assisted ESR measurements. This study not only provides evidence for the feasibility of metallic Au as a SPR co-catalyst of bismuth-based materials, but also furnishes new insights into the multiple effects for enhancing the photochemical properties.
机译：等离子体诱导的金纳米颗粒和表面氧化诱导的共修饰BiOIO3异质结构纳米复合材料已经通过一种简便的原位光合作用途径得到了发展。通过XRD，XPS，TEM，SEM，UV-Vis DRS和PL系统地表征了所制备的光催化剂的结构和光学性质。令人着迷的是，Au纳米颗粒的引入不仅在可见光区域引起了增强的光吸收，而且还引起了BiOIO3的微观结构变化。 HAuCl4的氧化作用导致Bi4 + / Bi5 +的形成，这导致了产品比表面积的增加。通过监测若丹明B（RhB）的光分解和在紫外-可见光照射下产生的光电流，研究了样品的光催化和光电化学性质。结果表明，与原始的BiOIO3相比，Au @ BiOIO3的光反应性大大提高。高度改善的光化学性质归因于由Au粒子的表面等离振子共振（SPR）效应，表面化学状态变化以及显着高的表面积提供的高促进的电荷载流子的产生和分离的协同贡献。更多的反应性位点。电化学阻抗谱（EIS），波德相谱，PL谱，有源陷波和DMPO辅助ESR测量证实了这些结果。这项研究不仅为金属金作为铋基材料的SPR助催化剂的可行性提供了证据，而且还为增强光化学性能的多种效应提供了新的见解。

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