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Fabrication of Heterostructured Fe 2 TiO 5 –TiO 2 Nanocages with Enhanced Photoelectrochemical Performance for Solar Energy Conversion
Author(s) -
Zhang Peng,
Lu Xue Feng,
Luan Deyan,
Lou Xiong Wen David
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202000697
Subject(s) - nanocages , materials science , photocatalysis , fabrication , water splitting , hydrothermal circulation , nanotechnology , chemical engineering , nanoparticle , energy transformation , energy conversion efficiency , annealing (glass) , semiconductor , photoelectrochemistry , anode , catalysis , optoelectronics , electrochemistry , electrode , chemistry , metallurgy , medicine , biochemistry , alternative medicine , physics , pathology , engineering , thermodynamics
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.