Department of Chemistry, National Institute of Technology Durgapur, Durgapur, 713209, West Bengal, India.
Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur, 177005, Himachal Pradesh, India.
Environ Res. 2022 Sep;212(Pt D):113550. doi: 10.1016/j.envres.2022.113550. Epub 2022 May 30.
Titanium dioxide (TiO) has been considered as one of the most promising photocatalysts nanomaterials and is being used in a variety of fields of energy and environment under sunlight irradiation via photocatalysis. Highly efficient photocatalytic materials require the design of the proper structure with excellent morphology, interfacial structures, optical and surface properties, etc. Which are the key points to realize effective light-harvesting for photocatalytic applications. Hierarchical TiO based nanoflower structures (i.e., 3D nanostructures) possess such characteristics and have attracted much attention in recent years. The uniqueness of TiO nanoflowers (NFs) with a coarse texture and arranged structures demonstrates higher photocatalytic activity. This review deals with the hydrothermal synthesis of 3D TiO NFs and effect of shape/size as well as various key synthesis parameters to improve their optoelectronic and photocatalytic properties. Furthermore, to improve their photocatalytic properties, various strategies such as doping engineering and heterojunction/nanocomposite formation with other functional nanomaterials have been discussed followed by their potential applications in photocatalytic degradation of various emerging pollutants discharged into the wastewater from various sources. Importance of such 3D nanoarchitecutres and future research in other fields of current interest in environments are discussed.
二氧化钛（TiO）被认为是最有前途的光催化剂纳米材料之一，在阳光照射下通过光催化作用，被应用于能源和环境的多个领域。高效的光催化材料需要设计具有优异形态、界面结构、光学和表面性能等的适当结构。这些是实现光催化应用中有效光捕获的关键点。基于 TiO 的分级纳米花结构（即 3D 纳米结构）具有这些特点，近年来引起了广泛关注。TiO 纳米花（NFs）具有粗糙的质地和排列结构的独特性，表现出更高的光催化活性。本综述讨论了 3D TiO NFs 的水热合成以及形状/尺寸以及各种关键合成参数的影响，以改善其光电和光催化性能。此外，为了提高其光催化性能，讨论了各种策略，如掺杂工程和与其他功能纳米材料形成异质结/纳米复合材料，以及它们在光催化降解各种新兴污染物方面的潜在应用，这些污染物从各种来源排放到废水中。讨论了这种 3D 纳米结构的重要性以及当前环境领域其他感兴趣领域的未来研究。
