Mechanism of Fluorescence Enhancement of Biosynthesized XFe2O4–BiFeO3 (X = Cr, Mn, Co, or Ni) Membranes

Ferrites–bismuth ferrite is an intriguing option for medical diagnostic imaging device due to its magnetoelectric and enhanced near-infrared fluorescent properties. However, the embedded XFO nanoparticles are randomly located on the BFO membranes, making implementation in devices difficult. To overc...

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Bibliographic Details
Published in:Nanoscale research letters 2016-12, Vol.11 (1), p.543-543, Article 543
Main Authors: Bian, Liang, Li, Hai-long, Dong, Hai-liang, Dong, Fa-qin, Song, Mian-xin, Wang, Li-sheng, Hou, Wen-ping, Gao, Lei, Zhang, Xiao-yan, Zhou, Tian-liang, Sun, Guang-ai, Li, Xin-xi, Xie, Lei
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Materials Science
Molecular Medicine
Nano Express
Nanochemistry
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
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Summary:Ferrites–bismuth ferrite is an intriguing option for medical diagnostic imaging device due to its magnetoelectric and enhanced near-infrared fluorescent properties. However, the embedded XFO nanoparticles are randomly located on the BFO membranes, making implementation in devices difficult. To overcome this, we present a facile bio-approach to produce XFe 2 O 4 –BiFeO 3 (XFO–BFO) (X = Cr, Mn, Co, or Ni) membranes using Shewanella oneidensis MR-1. The perovskite BFO enhances the fluorescence intensity (at 660 and 832 nm) and surface potential difference (−469 ~ 385 meV and −80 ~ 525 meV) of the embedded spinel XFO. This mechanism is attributed to the interfacial coupling of the X–Fe (e − or h + ) and O–O (h + ) interfaces. Such a system could open up new ideas in the design of environmentally friendly fluorescent membranes.
ISSN:1931-7573
1556-276X
DOI:10.1186/s11671-016-1747-4