Enhanced visible-light-response photocatalytic activity of bismuth ferrite nanoparticles

Wang, Xiong; Lin, Ying; Ding, Xifeng; Jiang, Jingyi

doi:10.1016/j.jallcom.2011.03.074

Cited by 149 publications

(60 citation statements)

References 24 publications

(23 reference statements)

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“…LaFeO 3 is known to be antiferromagnet with a Neel temperature T N of 738 K [4]. Recently, rare-earth perovskites nanoparticles, such as LaMnO 3 , LaFeO 3 , GdFeO 3 , BiFeO 3 , TbFeO 3 and YFeO 3 , have received increasing attention and been applied as photocatalysts [9][10][11][12][13][14]. When compared with bulk these nanoparticles have higher photocatalytic performance due to their higher catalytic activity and larger surface area, but their active life is short due to their instability and tendency to aggregate into bigger ones.…”

Section: Introductionmentioning

confidence: 99%

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Kumar

Jayavel

2014

J Mater Sci: Mater Electron

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LaFeO 3 nanospheres were synthesized by hydrothermal method followed by calcination. Citric acid was found to be key factor to the purity and the surface morphology of the LaFeO 3 nanospheres. The obtained nanospheres have been structurally characterized by XRD which confirms the single crystalline orthorhombic structure. The structural information of the nanosphere was also confirmed from the Raman spectrum. HRSEM and AFM revealed that the prepared sample has been composed of spherical like morphology with an average size of about 45 nm. From XPS analysis, the chemical state of the LaFeO 3 nanospheres was confirmed. Magnetic measurement indicates the products shows weak magnetic behaviour. The UV-Vis spectroscopy analysis shows strong absorption at 466 nm which confirms that the obtained material has excellent visible light absorption ability. Furthermore, the photocatalytic experiment demonstrates that the prepared LaFeO 3 nanospheres exhibit well and stable photocatalytic activity for decomposition of methyl orange under visible-light irradiation.

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Section: Introductionmentioning

confidence: 99%

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Kumar

Jayavel

2014

J Mater Sci: Mater Electron

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“…The high heating temperature induced the formation of the impurity Bi 2 O 3 and Bi 25 FeO 40 , which was marked with ''asterisk'' and ''filled square box,'' respectively. According to the literature, the high heating temperature tends to induce the formation of the impurity when synthesizing of BiFeO 3 by sol-gel technique [13]. Furthermore, the lower heating temperature would also induce impurity such as Bi 2 O 3 [27].…”

Section: Resultsmentioning

confidence: 99%

“…Apart from ferroelectric properties, BiFeO 3 is one of the materials with the largest known electric polarizations and has a small (&2 eV) band gap for which it is likely applied in conducting domain walls, catalyst and fuel and/or solar cells [6][7][8][9][10][11]. Recently, it has also been demonstrated that nano-BFO exhibits photocatalytic activities under visible light irradiation for water splitting and degradation of organic & Yongping Liu liuyp624@163.com 1 College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China pollutants because of its narrow band gap and excellent chemical stability [12][13][14][15]. Li et al [12] successfully synthesized BiFeO 3 microcrystals with various shapes and sizes, suggesting that photocatalytic activity of microcubes was better than that of microspheres for the degradation of Congo red under visible light irradiation.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al [12] successfully synthesized BiFeO 3 microcrystals with various shapes and sizes, suggesting that photocatalytic activity of microcubes was better than that of microspheres for the degradation of Congo red under visible light irradiation. Wang et al [13] also demonstrated that the BiFeO 3 nanoparticles with an average diameter of 35 nm provided the better photocatalytic performance than the bulk in the degradation of rhodamine B. Otherwise, Fei et al [16] studied {111} dominant pills and rods of BiFeO 3 with a significant enhanced visible light response, and their results showed that BiFeO 3 with the designed structures could have a better performance in photocatalytic applications.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced photocatalytic performance of Ag-decorated BiFeO3 in visible light region

Wang

et al. 2015

J Sol-Gel Sci Technol

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In this paper, a novel photocatalyst, made up of Ag/BiFeO 3 nanocomposites activated by visible light, was successfully synthesized using a sol-gel process, followed by a chemical reduction method. The as-prepared BiFeO 3 particles and Ag/BiFeO 3 nanocomposites were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy and diffuse reflectance spectroscopy. The results showed that the metal Ag nanoparticles with diameter of 20-50 nm are anchored on the surface of BiFeO 3 . Meanwhile, the photocatalytic experiments demonstrated that the Ag/BiFeO 3 composites had excellent photocatalytic activity for the decomposition of methyl orange in visible light, which far exceeded that of the pure BiFeO 3 . These results revealed Ag loading could significantly improve the photocatalytic property of BiFeO 3 . Recycle experiments showed the nanocomposites had an excellent recoverability, suggesting stable photoactivity. Finally, we discuss the photocatalytic mechanism of nanocomposites. The enhanced photoactivity of Agdecorated BiFeO 3 photocatalyst is most likely attributed to the electronic effect of Ag nanoparticles including surface plasmon resonance. Graphical Abstract

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“…18,19 The effect of various synthetic techniques and the presence of chelating agents on the properties BiFeO3 in degradation of various organic contaminants such as Bisphenol A or Rhodamin B have also been studied. [20][21][22][23][24] Now, we have studied the effect of Co-doping on the photocatalytic activity of BiFeO3 in the degradation of Evans Blue dye.…”

Section: Figure 1 Structure Of Evans Bluementioning

confidence: 99%

Enhancing Photocatalytic Activity of Bismuth Ferrite by Doping With Cobalt and Its Use for Degradation of Evans Blue

Paliwal¹,

Ameta²,

Ameta³

2017

ECB

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An attempt has been made to enhance the photocatalytic activity of bismuth ferrite by doping it with cobalt, to prepare a catalyst to use in wide pH range for the photodegradation of Evans blue dye. The progress of the reaction has been monitored spectrophotometrically by measuring the absorbance of the reaction mixture at definite time intervals. Different parameters such as pH, the concentration of dye, amount of semiconductor and light intensity were varied to achieve the optimum rate of photodegradation. The results show that doping of bismuth ferrite by cobalt increases the rate of photocatalytic degradation due to narrowing of the band gap. Undoped bismuth ferrite has the highest catalytic activity in basic while the Co-doped catalyst in acidic medium. A tentative mechanism for the reaction has been proposed. * Corresponding Authors

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Enhanced visible-light-response photocatalytic activity of bismuth ferrite nanoparticles

Cited by 149 publications

References 24 publications

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Enhanced photocatalytic performance of Ag-decorated BiFeO3 in visible light region

Enhancing Photocatalytic Activity of Bismuth Ferrite by Doping With Cobalt and Its Use for Degradation of Evans Blue

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