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Construction of Heterostructured Fe 2 O 3 ‐TiO 2 Microdumbbells for Photoelectrochemical Water Oxidation
Author(s) -
Zhang Peng,
Yu Le,
Lou Xiong Wen David
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201808104
Subject(s) - heterojunction , materials science , photocatalysis , amorphous solid , annealing (glass) , chemical engineering , water splitting , fabrication , nanotechnology , adsorption , catalysis , chemistry , optoelectronics , crystallography , organic chemistry , medicine , alternative medicine , pathology , engineering , composite material
Designing advanced structures for heterojunction photocatalysts is an effective approach to enhance their performance toward solar‐energy conversion. Herein we develop a facile synthetic strategy for the fabrication of Fe 2 O 3 ‐TiO 2 microdumbbells. With the assistance of preferentially adsorbed hexadecylamine molecules, amorphous TiO 2 nanospheres with tunable size are grown at the two ends of Fe‐based metal–organic compound microrods. Subsequent annealing of the hybrid obtained leads to the formation of a novel heterostructured Fe 2 O 3 ‐TiO 2 microdumbbell photocatalyst. Owing to the heterojunction formed and the unique structure, Fe 2 O 3 ‐TiO 2 microdumbbells with optimized composition and morphology show enhanced performance for photoelectrochemical water oxidation, compared to monophasic Fe 2 O 3 and TiO 2 materials as well as physical mixtures thereof.