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Synthesis of Fe and N Co-doped Bi 2 Ti 2 O 7 Nanofiber with Enhanced Photocatalytic Activity Under Visible Light Irradiation

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ABSTRACT

A series of N-Fe-Bi2Ti2O7 nanofibers were successfully synthesized. The structure, morphology, visible light photocatalytic properties, and the degradation mechanism of N-Fe-Bi2Ti2O7 were investigated. A new phase of Bi4Ti3O7 and smaller band gap could be observed after doing Fe and N into Bi2Ti2O7. It can degrade 66 % MO and 87 % MB in 120 min under visible light irradiation, which is much more than that of pure Bi2Ti2O7. The results indicate that such unique structure could enhance the charge transfer between the nanostructure interfaces and therefore improve its photocatalytic activities.

Electronic supplementary material: The online version of this article (doi:10.1186/s11671-016-1610-7) contains supplementary material, which is available to authorized users.

No MeSH data available.


SEM (a, b) and TEM (c, d) patterns of N-Fe-BTO 0.5 % samples
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Fig1: SEM (a, b) and TEM (c, d) patterns of N-Fe-BTO 0.5 % samples

Mentions: The morphology of the N-Fe-BTO 0.5 % samples were shown in Fig. 1. These nanofibers with the diameter of 100~150 nm were consisting with many nanoparticles, as shown in Fig. 1a, b. Obviously, this structure could result in high specific surface area and provide many active sites in the photocatalytic process [8]. And from the TEM images in Fig. 1c, d, clear lattice fringes were observed, indicating that these nanofibers have good crystallinity. The interplanar distances was 0.32 nm, which consisted with the (622) plane of Bi2Ti2O7. Meanwhile, the SAED pattern was also point to the (622), (444), and (800) planes of Bi2Bi2O7.Fig. 1


Synthesis of Fe and N Co-doped Bi 2 Ti 2 O 7 Nanofiber with Enhanced Photocatalytic Activity Under Visible Light Irradiation
SEM (a, b) and TEM (c, d) patterns of N-Fe-BTO 0.5 % samples
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5016314&req=5

Fig1: SEM (a, b) and TEM (c, d) patterns of N-Fe-BTO 0.5 % samples
Mentions: The morphology of the N-Fe-BTO 0.5 % samples were shown in Fig. 1. These nanofibers with the diameter of 100~150 nm were consisting with many nanoparticles, as shown in Fig. 1a, b. Obviously, this structure could result in high specific surface area and provide many active sites in the photocatalytic process [8]. And from the TEM images in Fig. 1c, d, clear lattice fringes were observed, indicating that these nanofibers have good crystallinity. The interplanar distances was 0.32 nm, which consisted with the (622) plane of Bi2Ti2O7. Meanwhile, the SAED pattern was also point to the (622), (444), and (800) planes of Bi2Bi2O7.Fig. 1

View Article: PubMed Central - PubMed

ABSTRACT

A series of N-Fe-Bi2Ti2O7 nanofibers were successfully synthesized. The structure, morphology, visible light photocatalytic properties, and the degradation mechanism of N-Fe-Bi2Ti2O7 were investigated. A new phase of Bi4Ti3O7 and smaller band gap could be observed after doing Fe and N into Bi2Ti2O7. It can degrade 66 % MO and 87 % MB in 120 min under visible light irradiation, which is much more than that of pure Bi2Ti2O7. The results indicate that such unique structure could enhance the charge transfer between the nanostructure interfaces and therefore improve its photocatalytic activities.

Electronic supplementary material: The online version of this article (doi:10.1186/s11671-016-1610-7) contains supplementary material, which is available to authorized users.

No MeSH data available.