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Title: Low-temperature hydrothermal synthesis of BiFeO{sub 3} microcrystals and their visible-light photocatalytic activity

Abstract

Highlights: ► Urea-assisted hydrothermal synthesis of pure BiFeO{sub 3} at 120 °C was reported. ► Possible formation mechanism of pure phase BiFeO{sub 3} at low temperature was illuminated. ► BiFeO{sub 3} microcrystals exhibited efficient visible-light photocatalytic activity. -- Abstract: Pure BiFeO{sub 3} (BFO) microcrystals were synthesized at the temperature as low as 120 °C via a urea-assisted hydrothermal process. The crystal structure, morphology and photocatalytic property of BFO microcrystals were investigated. The analysis reveals that the hydrolysis of urea in the hydrothermal process plays a key role in the synthesis of pure phase BFO microcrystals. FE-SEM and TEM results show that these BFO microcrystals present a nearly spherical microstructure, and specially exhibit superstructures consisting of large amounts of small particles with the size of 100–150 nm by further observation. Moreover, these BFO microcrystals exhibit efficient photocatalytic activity under visible-light irradiation, suggesting their promising applications as photocatalysts and related fields.

Authors:
 [1]; ;  [1]
  1. Electronic Materials Research Laboratory, Key Laboratory of Ministry of Education, Xi’an Jiaotong University, Xi’an 710049 (China)
Publication Date:
OSTI Identifier:
22215590
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CRYSTAL STRUCTURE; CRYSTALS; HYDROLYSIS; HYDROTHERMAL SYNTHESIS; IRRADIATION; MICROSTRUCTURE; PHOTOCATALYSIS; SCANNING ELECTRON MICROSCOPY; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Wei, Jie, E-mail: weij2008@mail.xjtu.edu.cn, Zhang, Chao, and Xu, Zhuo. Low-temperature hydrothermal synthesis of BiFeO{sub 3} microcrystals and their visible-light photocatalytic activity. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.06.068.
Wei, Jie, E-mail: weij2008@mail.xjtu.edu.cn, Zhang, Chao, & Xu, Zhuo. Low-temperature hydrothermal synthesis of BiFeO{sub 3} microcrystals and their visible-light photocatalytic activity. United States. doi:10.1016/J.MATERRESBULL.2012.06.068.
Wei, Jie, E-mail: weij2008@mail.xjtu.edu.cn, Zhang, Chao, and Xu, Zhuo. Thu . "Low-temperature hydrothermal synthesis of BiFeO{sub 3} microcrystals and their visible-light photocatalytic activity". United States. doi:10.1016/J.MATERRESBULL.2012.06.068.
@article{osti_22215590,
title = {Low-temperature hydrothermal synthesis of BiFeO{sub 3} microcrystals and their visible-light photocatalytic activity},
author = {Wei, Jie, E-mail: weij2008@mail.xjtu.edu.cn and Zhang, Chao and Xu, Zhuo},
abstractNote = {Highlights: ► Urea-assisted hydrothermal synthesis of pure BiFeO{sub 3} at 120 °C was reported. ► Possible formation mechanism of pure phase BiFeO{sub 3} at low temperature was illuminated. ► BiFeO{sub 3} microcrystals exhibited efficient visible-light photocatalytic activity. -- Abstract: Pure BiFeO{sub 3} (BFO) microcrystals were synthesized at the temperature as low as 120 °C via a urea-assisted hydrothermal process. The crystal structure, morphology and photocatalytic property of BFO microcrystals were investigated. The analysis reveals that the hydrolysis of urea in the hydrothermal process plays a key role in the synthesis of pure phase BFO microcrystals. FE-SEM and TEM results show that these BFO microcrystals present a nearly spherical microstructure, and specially exhibit superstructures consisting of large amounts of small particles with the size of 100–150 nm by further observation. Moreover, these BFO microcrystals exhibit efficient photocatalytic activity under visible-light irradiation, suggesting their promising applications as photocatalysts and related fields.},
doi = {10.1016/J.MATERRESBULL.2012.06.068},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}