Zhang Peng, Lu Xue Feng, Luan Deyan, Lou Xiong Wen David
School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
Angew Chem Int Ed Engl. 2020 May 18;59(21):8128-8132. doi: 10.1002/anie.202000697. Epub 2020 Mar 3.
Photocatalysts with well-designed compositions and structures are desirable for achieving highly efficient solar-to-chemical energy conversion. Heterostructured semiconductor photocatalysts with advanced hollow structures possess beneficial features for promoting the activity towards photocatalytic reactions. Here we develop a facile synthetic strategy for the fabrication of Fe TiO -TiO nanocages (NCs) as anode materials in photoelectrochemical (PEC) water splitting cells. A hydrothermal reaction is performed to transform MIL-125(Ti) nanodisks (NDs) to Ti-Fe-O NCs, which are further converted to Fe TiO -TiO NCs through a post annealing process. Owing to the compositional and structural advantages, the heterostructured Fe TiO -TiO NCs show enhanced performance for PEC water oxidation compared with TiO NDs, Fe TiO nanoparticles (NPs) and Fe TiO -TiO NPs.
具有精心设计的组成和结构的光催化剂对于实现高效的太阳能到化学能转换是理想的。具有先进中空结构的异质结构半导体光催化剂具有促进光催化反应活性的有益特性。在此，我们开发了一种简便的合成策略，用于制备Fe TiO -TiO纳米笼（NCs）作为光电化学（PEC）水分解电池中的阳极材料。通过水热反应将MIL-125（Ti）纳米盘（NDs）转化为Ti-Fe-O NCs，然后通过后续退火过程将其进一步转化为Fe TiO -TiO NCs。由于组成和结构上的优势，与TiO NDs、Fe TiO纳米颗粒（NPs）和Fe TiO -TiO NPs相比，异质结构的Fe TiO -TiO NCs在PEC水氧化方面表现出增强的性能。
