Fabrication of Heterostructured Fe2TiO5-TiO2 Nanocages with Enhanced Photoelectrochemical Performance for Solar Energy Conversion.
Fabrication of Heterostructured Fe2TiO5-TiO2 Nanocages with Enhanced Photoelectrochemical Performance for Solar Energy Conversion.
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DOI：
10.1002/anie.202000697
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发表时间：
2020-02
影响因子：
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通讯作者：
Peng Zhang;Xuefeng Lu;D. Luan;X. Lou
中科院分区：
文献类型：
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作者：
Peng Zhang;Xuefeng Lu;D. Luan;X. Lou
具有良好设计的组成和结构的光催化剂对于实现高效的太阳能-化学能转换是期望的。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征。本文提出了一种制备Fe 2 TiO 5 -TiO 2纳米笼作为光电化学（PEC）水裂解电池阳极材料的简便合成方法。进行水热反应以将MIL-125（Ti）纳米盘（ND）转化为Ti-Fe-O NC，其通过后退火过程进一步转化为Fe 2 TiO 5 -TiO 2 NC。与TiO 2纳米颗粒、Fe 2 TiO 5纳米粒子（NPs）和Fe 2 TiO 5-TiO 2纳米粒子相比，由于其组成和结构上的优势，异质结构Fe 2 TiO 5 -TiO 2纳米粒子具有更好的PEC水氧化性能。
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 2 TiO 5 -TiO 2 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 2 TiO 5 -TiO 2 NCs through a post annealing process. Owing to the compositional and structural advantages, the heterostructured Fe 2 TiO 5 -TiO 2 NCs show enhanced performance for PEC water oxidation compared with TiO 2 NDs, Fe 2 TiO 5 nanoparticles (NPs) and Fe 2 TiO 5 -TiO 2 NPs.