Electrochemical synthesis of perovskite LaFeO 3 nanoparticle-modified TiO 2 nanotube arrays for enhanced visible-light photocatalytic activity

A series of perovskite LaFeO 3 nanoparticle-decorated TiO 2 nanotube arrays (LaFeO 3 /TiO 2 NTAs) was constructed through an electrochemical method. This type of highly ordered TiO 2 NTA was first prepared by anodizing Ti sheets. LaFeO 3 nanoparticles with a diameter of 10–20 nm were then electrodep...

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Bibliographic Details
Published in:New journal of chemistry 2019-10, Vol.43 (42), p.16506-16514
Main Authors: Gong, Cheng, Zhang, Zeyang, Lin, Sheng, Wu, Zhi, Sun, Lan, Ye, Chenqing, Hu, Yanling, Lin, Changjian
Format: Article
Language:English
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Summary:A series of perovskite LaFeO 3 nanoparticle-decorated TiO 2 nanotube arrays (LaFeO 3 /TiO 2 NTAs) was constructed through an electrochemical method. This type of highly ordered TiO 2 NTA was first prepared by anodizing Ti sheets. LaFeO 3 nanoparticles with a diameter of 10–20 nm were then electrodeposited and well dispersed on the surface of the anatase TiO 2 NTAs. The as-prepared LaFeO 3 nanoparticle/TiO 2 NTA heterostructure showed enhanced activity than individual TiO 2 NTAs and LaFeO 3 for the visible light degradation of methylene blue (MB) and excellent photochemical stability. The LaFeO 3 nanoparticle-modified TiO 2 NTAs exhibited broad visible light harvesting and facilitated electron–hole separation, which are responsible for the high photocatalytic degradation rate of MB. This finding demonstrates the importance of promoting charge separation and transfer in heterostructured photocatalysts and also highlights the promising role of inorganic perovskite materials in photocatalytic applications.
ISSN:1144-0546
1369-9261
DOI:10.1039/C9NJ03908B