Ullah Sajjad, Ferreira-Neto Elias P, Khan Abrar A, Medeiros Isaac P M, Wender Heberton
Institute of Chemical Sciences, University of Peshawar, PO Box 25120, Peshawar, Pakistan.
Department of Chemistry, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, 88040-900, Brazil.
Photochem Photobiol Sci. 2023 Jan;22(1):219-240. doi: 10.1007/s43630-022-00299-9. Epub 2022 Sep 30.
Heterogeneous photocatalysis employing semiconductor oxide photocatalysts is a sustainable and promising method for environmental remediation and clean energy generation. In this context, nanostructured photocatalysts, with at least one dimension in the 1‒100 nm size regime, have attracted ever-growing attention due to their unique and often enhanced size-dependent physicochemical properties. While their reduced size ensures enhanced photocatalytic performance, the same makes it difficult and time/energy-demanding to remove/recover such nanostructured photocatalysts from aqueous media. This fundamental limitation has paved the way towards developing supported nanophotocatalysts where the active photocatalytic nanostructures are coated on the surface of polymeric or inorganic support materials, often in a core@shell conformation. This arrangement solves the problem of photocatalysts' recovery for effective reuse or recycling and leads to improved and desired target properties due to specific photocatalyst-support interactions. While the enhanced physicochemical properties of supported photocatalysts have been widely studied in many target applications, the role of support-photocatalysts interactions in improving these properties remains unexplored. This review article provides an updated viewpoint on the photocatalyst-support interactions and the resulting unique physiochemical properties important for diverse photochemical applications and the design of practical devices. While exploring the properties of supported nanostructured metal oxide/sulfides photocatalysts such as TiO and MoS, we also briefly discuss the common strategies employed to coat the active nanomaterials on the surface of different supports (organic/polymeric, inorganic, active, inert, and magnetic).
采用半导体氧化物光催化剂的多相光催化是一种用于环境修复和清洁能源生产的可持续且有前景的方法。在此背景下，纳米结构光催化剂因其独特且通常增强的尺寸依赖性物理化学性质而受到越来越多的关注，其至少一维尺寸在1‒100纳米范围内。虽然其减小的尺寸确保了增强的光催化性能，但同样使其从水性介质中去除/回收这种纳米结构光催化剂变得困难且耗时/耗能。这一基本限制为开发负载型纳米光催化剂铺平了道路，其中活性光催化纳米结构通常以核壳结构包覆在聚合物或无机载体材料表面。这种排列解决了光催化剂回收以有效再利用或循环利用的问题，并由于特定的光催化剂-载体相互作用而导致改善和所需的目标性能。虽然负载型光催化剂增强的物理化学性质在许多目标应用中已得到广泛研究，但载体-光催化剂相互作用在改善这些性质中的作用仍未得到探索。这篇综述文章提供了关于光催化剂-载体相互作用以及由此产生的对各种光化学应用和实际器件设计重要的独特物理化学性质的最新观点。在探索负载型纳米结构金属氧化物/硫化物光催化剂（如TiO和MoS）的性质时，我们还简要讨论了将活性纳米材料包覆在不同载体（有机/聚合物、无机、活性、惰性和磁性）表面所采用的常见策略。
