A newly emerging visible light-responsive BiFeO 3 perovskite for photocatalytic applications: A mini review

Lam, Sze–Mun; Sin, Jin–Chung; Mohamed, Abdul Rahman

doi:10.1016/j.materresbull.2016.12.052

Cited by 161 publications

(54 citation statements)

References 92 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ashes obtained from the combustion process is analyzed for perovskite-type BFO nanophase. Moreover, the size and shape of BFO materials greatly influence photocatalytic process and are generally controlled by adding templating agents (Lam et al, 2017).…”

Section: Combustionmentioning

confidence: 99%

“…Figure 1a shows the perovskite structure consisting of the cation sites in the crystal lattice and how B and X form an octahedral BX 6 structure, where at the center of the octahedral structure, X lies in the corners around B. The A-site (Bi in BFO) is located on the corners of the unit cell and the B-site (Fe in BFO) at the center of the unit cell (Lam et al, 2017). Figure 1b shows the formation of a 3-D system of an octahedral structure in an extended form linking each other at all-corners of the structure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Photocatalytic activity and doping effects of BiFeO3 nanoparticles in model organic dyes

Haruna

Abdulkadir

Idris

2020

Heliyon

129

View full text Add to dashboard Cite

The studies of advanced materials in environmental remediation and degradation of pollutants is rapidly advancing because of their wide varieties of applications. BiFeO 3 (BFO), a perovskite nanomaterial with a rhombohedral R3c space group, is currently receiving tremendous attention in photodegradation of dyes. The photocatalytic activity of BFO nanoparticle is a promising field of research in photocatalysis. BFO nanomaterial is a photocatalyst enhanced by doping because of its reduce bandgap energy (2.0-2.77 eV), multiferroic property, strong photoabsorption and crystal structure. The material has proven to be very useful for the degradation of dyes under visible light irradiation among other photocatalysts. Its exceptional nontoxicity, suitability, low cost and long term excellent stability makes it an efficient photocatalyst for the degradation of effluents from textile and pharmaceutical industries which ended-up in the environment and now a major concern of the modern world. This mini-review attempts to provide some detailed synthetic routes of BFO and BFO related nanomaterials and the notable achievements so far on the effect of doping the material. It also discusses the effect of crystallite size of the material and other photophysical properties and how they influence the photocatalytic process of model organic dye pollutants, to date.

show abstract

Section: Combustionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity and doping effects of BiFeO3 nanoparticles in model organic dyes

Haruna

Abdulkadir

Idris

2020

Heliyon

129

View full text Add to dashboard Cite

show abstract

“…Much work has been reported on the different synthesis methods of BFO, but there is still the need to study the effect of doping the material and to investigate the impact on its crystal structure [20]. Hu et al reported the photocatalytic property of Sm-doped BFO nanoparticle for the degradation of methyl orange under visible light which showed a reduce energy bandgap of 2.06 eV [21].…”

Section: Introductionmentioning

confidence: 99%

Effect of annealing temperature on the synthesis and photocatalytic properties of Bi0.65K0.2Ba0.15FeO3 perovskite-like nanoparticle synthesized by sol-gel method

Haruna

Abdulkadir

Idris

2020

Beni-Suef Univ J Basic Appl Sci

View full text Add to dashboard Cite

Background: BiFeO 3 shows promising applications in photocatalytic degradation, purification process, and in clean energy generation. The various fascinating properties of bismuth ferrite nanoparticles can be improved by doping the material at either of the A or B sites to give it extra photocatalytic advantage toward decreasing the energy bandgap and other photophysical properties of the material. Results: In this research, pure Bi 0.65 K 0.2 Ba 0.15 FeO 3 perovskite material was synthesized using the sol-gel method via citric acid route in the presence of sodium dodecyl sulfate (SDS). The powdered nanoparticles were annealed at different annealing temperatures of 600, 700, and 800°C each for 4 h in a muffle furnace and coded K2BFO 600, K2BFO 700, and K2BFO 800 corresponding to the annealing temperature of each portion. The powder nanoparticles were characterized using powdered X-ray diffraction (PXRD) to determine the crystallite structure. The samples displayed similar peak patterns with increase in intensity as the annealing temperature is increased indicating an increase in crystallinity. The impurity peaks in K2BFO 800, however, show that the sample may contain a secondary phase. Scanning electron microscopy (SEM) was used to determine the morphology, and UV-Vis spectroscopy indicated that all the powders were photoactive within the visible region of the electromagnetic spectrum. ATR-FTIR spectra of the samples were collected to study the formation and phase purity of the B-site in the perovskite structures. The photocatalytic performance of the powder was tested on methylene blue dye under visible light irradiation for the degradation studies. All powders showed photocatalytic ability after 2 h of irradiation with the powder annealed at 800°C being better. The photocatalytic activities of the powders showed improvement on addition of 2 drops of 1 M H 2 O 2 (80% degradation for K2BFO 800). The bandgap energy of K2BFO 800, 700, and 600 was estimated at approximately 2.00, 2.12, and 2.18 eV, respectively, using Tauc's equation. The improved activity is as a result of photoabsorption of visible light by the doped powders causing generation of electrons and holes. The kinetic studies were carried out and the mechanisms of the photocatalytic reaction proposed. Conclusion:The effect of annealing temperature on synthesis of the material shows enhanced photoactivity in the presence of hydrogen peroxide leading to improved performance for the degradation of MB, and the catalyst can be said to be a good candidate for the treatment of waste materials.

show abstract

“…As one of typical iron-contained catalysts, BiFeO 3 with perovskite-type structure is known to be an interesting visible light-driven photocatalytic and photo-Fenton-like catalytic material for the degradation of dyes [26][27][28][29][30][31][32][33][34]. Nevertheless, its catalytic activity is not so strong to meet the application requirements owing to the high recombination rate of photogenerated charges.…”

Section: Introductionmentioning

confidence: 99%

Photo-Fenton Degradation of AO7 and Photocatalytic Reduction of Cr(VI) over CQD-Decorated BiFeO3 Nanoparticles Under Visible and NIR Light Irradiation

Tang

Sun

et al. 2019

Nanoscale Res Lett

View full text Add to dashboard Cite

In this work, the carbon quantum dot (CQD)-decorated BiFeO 3 nanoparticle photocatalysts were prepared by a hydrothermal method. The TEM observation and XPS characterization indicate that the CQDs are well anchored on the surface of BiFeO 3 nanoparticles. Acid orange 7 (AO7) and hexavalent chromium (Cr(VI)) were chosen as the model pollutants to investigate the photocatalytic/photo-Fenton degradation and photocatalytic reduction performances of the as-prepared CQD/BiFeO 3 composites under visible and near-infrared (NIR) light irradiation. Compared with bare BiFeO 3 nanoparticles, the CQD/BiFeO 3 composites exhibit significantly improved photocatalytic and photo-Fenton catalytic activities. Moreover, the composites possess good catalytic stability. The efficient photogenerated charges separation in the composites was demonstrated by the photocurrent response and electrochemical impedance spectroscopy (EIS) measurements. The main active species involved in the catalytic degradation reaction were clarified by radicals trapping and detection experiments. The underlying photocatalytic and photo-Fenton mechanisms are systematically investigated and discussed.

show abstract

A newly emerging visible light-responsive BiFeO 3 perovskite for photocatalytic applications: A mini review

Cited by 161 publications

References 92 publications

Photocatalytic activity and doping effects of BiFeO3 nanoparticles in model organic dyes

Photocatalytic activity and doping effects of BiFeO3 nanoparticles in model organic dyes

Effect of annealing temperature on the synthesis and photocatalytic properties of Bi0.65K0.2Ba0.15FeO3 perovskite-like nanoparticle synthesized by sol-gel method

Photo-Fenton Degradation of AO7 and Photocatalytic Reduction of Cr(VI) over CQD-Decorated BiFeO3 Nanoparticles Under Visible and NIR Light Irradiation

Contact Info

Product

Resources

About