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首页> 外文期刊>RSC Advances >Synthesis and photocatalytic properties of three dimensional laminated structure anatase TiO2/nano-Fe0 with exposed (001) facets
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Synthesis and photocatalytic properties of three dimensional laminated structure anatase TiO2/nano-Fe0 with exposed (001) facets

机译：三维层叠结构锐钛矿TiO2 / Nano-Fe0具有暴露（001）刻面的合成和光催化性能

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摘要

Three dimensional laminated structure anatase TiO _(2) /nano-Fe ~(0) with exposed (001) facets used as photocatalysts were synthesized by a two-step solvothermal route and a liquid phase reduction deposition method. The resulting samples were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy, scanning electron microscopy, transmission electron microscopy and selected-area electron diffraction. Characterization and experimental results indicated that the three dimensional laminated structure of anatase TiO _(2) was assembled by two dimensional TiO _(2) -sheets with a thickness of approximately 30 nm. The three dimensional laminated structure anatase TiO _(2) /nano-Fe ~(0) photocatalysts with improved visible-light responsive capability, high charge-hole mobility, and low electron–hole recombination exhibited higher photocatalytic performance in the photocatalytic degradation of methylene blue. The composite of nano-Fe ~(0) and TiO _(2) could effectively promote the generation of hydroxyl radicals (˙OH) with a synergistic effect and Photo-Fenton theory. This study provided new insights into the fabrication and practical application of high-performance photocatalysts in degrading organic pollutants.
机译：通过两步溶解剂和液相减少沉积方法合成了用作光催化剂的暴露（001）刻面的三维层叠结构锐钛矿TiO _（2）/纳米Fe〜（0）。通过X射线衍射，X射线光电子能谱，紫外 - 可见漫射反射光谱，扫描电子显微镜，透射电子显微镜和选定区域电子衍射来表征得到的样品。表征和实验结果表明，锐钛矿TiO _（2）的三维层叠结构由厚度为约30nm的二维TiO _（2）片组装。三维层叠结构锐钛矿TiO _（2）/纳米Fe〜（0）光催化剂，具有改善的可见光响应能力，高电荷 - 空穴迁移率和低电子 - 空穴重组，在光催化降解亚甲基的光催化性能下表现出更高的光催化性能蓝色的。纳米 - Fe〜（0）和TiO _（2）的复合物可以有效地促进羟基自由基（˙OH）的产生，具有协同效应和光芬理论。本研究为高性能光催化剂在降解有机污染物中的高性能光催化剂的制造和实际应用提供了新的洞察。

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