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Layer-by-layer assembled photocatalysts for environmental remediation and solar energy conversion
Journal of Photochemistry and Photobiology C: Photochemistry Reviews ( IF 13.6 ) Pub Date : 2017-05-12 , DOI: 10.1016/j.jphotochemrev.2017.05.002
Barbara N. Nunes , Leonardo F. Paula , Ítalo A. Costa , Antonio Eduardo H. Machado , Leonardo G. Paterno , Antonio Otavio T. Patrocinio

The past decades have witnessed great research efforts based on nanotechnology and molecular engineering for the development of photo-induced devices, aiming at conversion of solar energy into electricity and fuels as well as the use of solar light for environmental remediation. The main challenge of this exciting field is to find suitable ways of assembling different materials into a single platform while making them capable of performing specific tasks, such as light-harvesting, charge transport or catalysis. In this scenario, layer-by-layer (LbL) thin film deposition appears a very promising technique, since it provides an unprecedented control of film thickness at molecular and nanometric scales by the sequential deposition of multifunctional complementary materials via different types of intermolecular interactions. Additionally, the films are generally deposited from precursors in liquid solutions or suspensions onto a large variety of substrates of either planar or curved surfaces, from rigid to flexible materials. These features make the LbL technique very affordable in terms of cost and ease of execution and it can be applied to virtually any type of material. The present manuscript provides a comprehensive review of photo-induced devices for energy conversion and environmental remediation based on LbL films composed of photoactive/photocatalytic nanomaterials. Its main goal is to give to a general readership the fundamental aspects of film assembly via the LbL technique, a detailed description of the different film nanoarchitectures, and finally, the outstanding photochemical and photoelectrochemical performance of photo-induced LbL assembled devices.



中文翻译:

用于环境修复和太阳能转化的逐层组装的光催化剂

在过去的几十年中,目睹了基于纳米技术和分子工程技术的巨大研究成果,以开发光致器件,旨在将太阳能转化为电能和燃料,以及利用太阳光进行环境修复。这个令人兴奋的领域的主要挑战是找到将不同材料组装到单个平台中的合适方法,同时使其能够执行特定任务,例如光收集,电荷传输或催化。在这种情况下,逐层(LbL)薄膜沉积似乎是非常有前途的技术,因为它通过通过不同类型的分子间相互作用顺序沉积多功能互补材料,从而在分子和纳米尺度上提供了前所未有的膜厚控制。此外,通常,薄膜是由前体在液体溶液或悬浮液中沉积到从刚性到柔性材料的各种平面或曲面表面上的。这些功能使LbL技术在成本和易于执行方面非常实惠,并且几乎可以应用于任何类型的材料。本手稿基于由光敏/光催化纳米材料组成的LbL薄膜,对光诱导的用于能量转换和环境修复的装置进行了全面的综述。它的主要目标是通过LbL技术为一般读者提供薄膜组装的基本方面,详细描述不同的薄膜纳米体系结构,最后提供光诱导LbL组装设备的出色光化学和光电化学性能。

更新日期:2017-05-12
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