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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >N and Ti3+ co-doped 3D anatase TiO2 superstructures composed of ultrathin nanosheets with enhanced visible light photocatalytic activity
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N and Ti3+ co-doped 3D anatase TiO2 superstructures composed of ultrathin nanosheets with enhanced visible light photocatalytic activity

机译：N和Ti3 +共掺杂3D锐钛矿型TiO2超结构，由超薄纳米片组成，具有增强的可见光光催化活性

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摘要

Structure-maneuvering and impurity element-doping are considered two of the most effective ways to enhance the photocatalytic activity of TiO2 catalysts. A facile solvothermal strategy was developed to simultaneously realize these two superiorities. The experimental results reveal that the as-prepared TiO2 exhibits a three-dimensional mesoporous hierarchical superstructure self-assembled by ultrathin nanosheets, which endows the product with a high surface area (similar to 240 m(2) g(-1)) and abundant mesopores resulting in high adsorption capacity for pollutant molecules and high absorption ability for incoming light. N doping and concomitant Ti3+ incorporation systematically account for reduction of the bandgap and thus realize vis-photocatalytic activity. As expected, the as-prepared TiO2 catalyst exhibits good photocatalytic activity under visible light irradiation.
机译：结构操纵和杂质元素掺杂被认为是增强TiO2催化剂光催化活性的两种最有效方法。为了同时实现这两个优点，开发了一种简便的溶剂热策略。实验结果表明，所制备的TiO2具有超薄纳米片自组装的三维介孔分层超结构，使产物具有较高的表面积（约240 m（2）g（-1）），并且具有丰富的表面积。中孔导致对污染物分子的高吸附能力和对入射光的高吸收能力。 N掺杂和伴随的Ti3 +掺入系统地解释了带隙的减少，从而实现了可见光催化活性。如所预期的，所制备的TiO 2催化剂在可见光照射下表现出良好的光催化活性。

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