School of Chemical Engineering, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia.
J Am Chem Soc. 2012 Apr 4;134(13):5754-7. doi: 10.1021/ja300730c. Epub 2012 Mar 23.
Anatase TiO(2) with specifically exposed facets has been extensively studied for maximizing its photocatalytic activity. However, most previous preparation methods involve high-pressure processing and corrosive chemicals. Few works have been conducted on hierarchical composite nanostructures assembled from well-defined TiO(2) nanocrystals. Here, we report a facile method for the preparation of nitrogen-doped titanate-anatase core-shell nanobelts. Anatase nanorods with specifically exposed {101} facets were obtained from a simple evaporation-induced, self-assembly (EISA) process and coupled with another semiconductor photocatalyst. The composite material with improved visible-light-harvesting ability, high charge-hole mobility, and low electron-hole recombination exhibited high photocatalytic performance and stability. The results presented here will make significant contributions toward the development of delicate composite photocatalysts for photocatalytic water purification and solar energy utilization.
锐钛矿 TiO(2) 因其具有暴露的特定晶面而被广泛研究以最大化其光催化活性。然而，大多数先前的制备方法涉及高压处理和腐蚀性化学品。很少有工作涉及由定义明确的 TiO(2) 纳米晶体组装而成的分级复合纳米结构。在这里，我们报告了一种制备氮掺杂钛酸盐-锐钛矿核壳纳米带的简便方法。锐钛矿纳米棒具有特定暴露的{101}面，通过简单的蒸发诱导自组装（EISA）过程获得，并与另一种半导体光催化剂结合。具有改善的可见光吸收能力、高电荷空穴迁移率和低电子空穴复合率的复合材料表现出高的光催化性能和稳定性。这里呈现的结果将为开发用于光催化水净化和太阳能利用的精细复合光催化剂做出重要贡献。
