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Author Wu, Qiang ♦ Chen, Pengfei ♦ Zhao, Li ♦ Yao, Weifeng ♦ Qi, Xuemei
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ BISMUTH COMPOUNDS ♦ CALCINATION ♦ CARBON FIBERS ♦ COMPARATIVE EVALUATIONS ♦ FERRITES ♦ FIELD EMISSION ♦ NANOSTRUCTURES ♦ PARTICLE SIZE ♦ PHOTOCATALYSIS ♦ SCANNING ELECTRON MICROSCOPY ♦ SILICA ♦ SOLVENTS ♦ SPECTRAL REFLECTANCE ♦ SYNTHESIS ♦ ULTRAVIOLET RADIATION ♦ VISIBLE RADIATION ♦ X-RAY DIFFRACTION
Abstract Graphical abstract: We firstly explored two facile and successful techniques for BiFeO{sub 3} immobilization on silica fiber, namely, a combined impregnation method with carbon nanofibers (CNFs) templates route, and a combined solvothermal method with CNFs templates route. It is expected that such materials with direct macroscopic shapes would hold promise as highly functionalized materials for potential practical applications, especially in photocatalysis. - Highlights: • BiFeO{sub 3} with macroscopic shape was successfully obtained. • The synthetic methods used here are facile, effective, and reproducible. • Phase composition was strongly affected by calcination temperatures. • The obtained materials are promising visible-light-driven photocatalysts. - Abstract: BiFeO{sub 3} was successfully immobilized on silica fiber via two synthetic techniques (a combined impregnation method with carbon nanofibers templates route; a combined solvothermal method with carbon nanofibers templates route). The phase structure, morphology and optical absorption property of the samples were characterized by X-ray diffraction, field emission scanning electron microscopy, and ultraviolet–visible diffuse reflectance spectroscopy. The results confirmed that carbon nanofibers can act as effective templates for BiFeO{sub 3} immobilization on silica fiber with the applied two methods. Compared with solvent thermal method, impregnation method tends to form a relatively uniform particle size distribution and highly-crystallized phase when the calcination temperature was kept at 773 K for 5 h. It turned out the phase composition of the samples is strongly affected by the calcination temperatures for both cases. Such materials with direct macroscopic shapes would hold promise as highly functionalized materials for potential practical applications, especially in photocatalysis.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-01-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 61


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