A novel synthesis of forest like BiFeO3 thin film: Photo-electrochemical studies and its application as a photocatalyst for phenol degradation

Zargazi, Mahboobeh; Entezari, Mohammad Hassan

doi:10.1016/j.apsusc.2019.03.347

Cited by 25 publications

(16 citation statements)

References 45 publications

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“…Perovskite AFeO 3 (A = Bi, La, Pr, Y, Sr, and Ga) constitutes the ferrite family, and BiFeO 3 is the most studied material in this class because of its narrow band gap (2.2 eV) and magnetic properties. There are several reports on bare BiFeO 3 for visible light driven photocatalytic degradation reactions in which different morphologies such as alveolate and cubes, nanoparticles, − microcages, hollow spheres, microspheres, , and films , have been fabricated and used for the degradation applications. Further modifications are also reported on this material to suppress the recombination of photogenerated charges for high photocatalytic performance.…”

Section: Energy and Environmental Applicationsmentioning

confidence: 99%

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

2020

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The use of solar energy to catalyze the photo-driven processes has attracted tremendous attention from the scientific community because of its great potential to address energy and environmental issues. In this regard, several attempts have been made by researchers to design and develop different materials with enhanced photocatalytic efficiencies. This Review comprehensively summarizes the recent reports on perovskite oxide based photocatalysts for organic pollutant degradation, water splitting, carbon dioxide conversion, and nitrogen fixation along with the basic understanding of involved mechanisms, current trends and advances in the field. The different design, synthesis, and development strategies have been discussed in detail to provide a comprehensive view of materials’ fabrication that influences their photocatalytic properties. Subsequently, the insights from recent reports on different perovskite oxide based materials, including simple oxides, mixed oxides, and layered perovskite oxides, are provided for the above-mentioned photocatalytic applications in a detailed manner. Finally, a summary of photocatalytic applications and a perspective on future research direction have been discussed. Based on the research progress in this field, it is highly anticipated that the photocatalytic systems, comprising perovskite oxide materials along with groundbreaking technologies for large-scale realization of these processes, can be established in the near future to address the energy and environment-oriented challenges.

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Section: Energy and Environmental Applicationsmentioning

confidence: 99%

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

2020

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“…The XRD pattern for Bi 1−x Ba x FeO 3 thin films (where x = 0, 0.02 and 0.05) measured at room temperature is shown in Figure 2. The XRD peaks for x = 0 and 0.05 corresponding to the planes (010), ( 110 [11,21,26,29,30] with the R3m space group identified with ICDS file no. 01-072-2112.…”

Section: Phase Structural and Microstructural Characterizationmentioning

confidence: 99%

“…However, the preparation of BiFeO 3 is very difficult due to: (i) The kinetics of phase formation in the Bi 2 O 3 -Fe 2 O 3 system that leads to the formation of impurities along with the perovskite major phase [20] and thermal stability; (ii) valence fluctuation of iron (Fe 3+ /Fe 2+ transitions) which leads to the variation of oxygen stoichiometry and appearance of the oxygen vacancies as defects; (iii) Bi volatilization because bismuth oxide has a low melting point. Therefore, in spite of different preparation methods, the powdered photocatalysts presents some disadvantages in comparison with thin films: difficulty in particle separation, a high cost, agglomeration effect at high concentration [21]. Consequently, BiFeO 3 thin films have drawn considerable interest due do its potential to be used as photocatalytic films.…”

Section: Introductionmentioning

confidence: 99%

“…The photocatalytic activity of BBFO thin films was investigated by the degradation of Rhodamine B (RhB) under solar light irradiation. Rhodamine B was chosen as the organic pollutant for this study because it is reported in the literature with high degradation efficiency [21]. Ba influences on the photocatalytic properties will be also discussed.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Characterization, and Photocatalytic Activity of Ba-Doped BiFeO3 Thin Films

2022

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In the present paper, Bi1-xBaxFeO3 (BBFO) thin films (where x = 0, 0.02 and 0.05) were prepared by a combined sol-gel and spin-coating method. The influence of Ba substitutions on the structural, microstructural, optical properties, and photocatalytic activity of BiFeO3 thin films has been studied. X-ray diffraction pattern correlated with FTIR analysis results confirms that all the films have a perovskite structure of rhombohedral symmetry with an R3m space group. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used to investigate the surface morphology and reveals microstructural modifications with the increase in Ba concentration. The optical properties show that the band gap is narrowed after doping with Ba ions and decreases gradually with the increase of doping content. The photocatalytic investigations of deposited films revealed that Ba doping of BFO material leads to the enhancement of photocatalytic response. The present data demonstrates that Bi1-xBaxFeO3 (BBFO) thin films can be used in photocatalytic applications.

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“…This is important for improving the efficiency of solar energy use. BFO has been synthesized using various methods, and is used in the decomposition and mineralization of pollutants [ 11 , 12 ]. One of the synthesis methods that allow the synthesis of phase-pure BFO with a highly developed surface is solution combustion [ 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Morphotropic Phase Boundary Enhanced Photocatalysis in Sm Doped BiFeO3

et al. 2022

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This paper presents the results of the synthesis of samarium-doped bismuth ferrite (BFO) nanoparticles by the solution combustion method. The dependence of BFO properties on the amount of the samarium (Sm) in the composition was studied. The synthesized nanocomposites were characterized by scanning electron microscopy SEM), X-ray diffractometry (XRD), Raman, Electron Diffuse Reflectance Spectroscopy (EDRS) and Electron Magnetic Resonance (EMR). The photocatalytic (PC) measurements showed the absence of a strict correlation between the PC activity and the crystallite size and band gap. An increase in the PC activity of BFO samples with 10 and 15% doping was observed and it was concluded that in controlling the PC properties in doped BFO, the processes of interfacial polarization at the boundaries of the morphotropic phase transition are of decisive importance. It was supposed that the internal electric field formed at these boundaries contributes to the efficient separation of photogenerated charge carriers.

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A novel synthesis of forest like BiFeO3 thin film: Photo-electrochemical studies and its application as a photocatalyst for phenol degradation

Cited by 25 publications

References 45 publications

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

Synthesis, Characterization, and Photocatalytic Activity of Ba-Doped BiFeO3 Thin Films

Morphotropic Phase Boundary Enhanced Photocatalysis in Sm Doped BiFeO3

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