Recyclable adsorbent of BiFeO3/Carbon for purifying industrial dye wastewater via photocatalytic reproducible

Jiao, Shengjie; Zhao, Yiming; Li, Chensha; Wang, Binsong; Qu, Yang

doi:10.1016/j.gee.2018.05.001

Cited by 30 publications

(11 citation statements)

References 39 publications

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“…From the results in Figure 4 , it can be seen that the XRD diffractograms of each nanofiller are consistent with the standard diffractogram of BiFeO 3 . The characteristic diffraction peaks of crystal planes such as (012), (104), (110), (006), (024), (116), (018) and (220) appear in the X-ray diffraction patterns, which can confirm that the sample prepared is rhombohedral perovskite structure with space group R3c [ 37 ], and all the diffraction peaks are relatively sharp, indicating that the obtained samples have good crystallinity [ 38 ]. There is no impurity peak in BL5FO, but there is a small amount of impurity phase in the two samples of BFC3O and BL5FC3O, as shown by “*”, which is mainly impurity phase Bi 2 Fe 4 O 9 [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

“…In addition, as the doping concentration increases, the interface between the nanoparticles and the polymer begins to overlap, and the scattering of carriers is enhanced. Meanwhile, the agglomeration of nanoparticles causes new defects in the materials [ 38 ]. In turn, the surface flashover voltage of the EP composite decreases.…”

Section: Resultsmentioning

confidence: 99%

“…At present, the characterization methods of material trap characteristics mainly include thermally stimulated current (TSC) [ 45 ], isothermal surface potential decay (ISPD) [ 38 ], pulsed electro-acoustic (PEA) [ 46 ], and laser-induced pressure pulse (LIPP) [ 47 ], etc. The ISPD method is widely used because of its simple experimental platform and convenient operation.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Bismuth Ferrite Nanometer Filler Element Doping on the Surface Insulation Properties of Epoxy Resin Composites

et al. 2021

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In the direct current electric field, the surface of epoxy resin (EP) insulating material is prone to charge accumulation, which leads to electric field distortion and damages the overall insulation of the equipment. Nano-doping is an effective method to improve the surface insulation strength and DC flashover voltage of epoxy resin composites. In this study, pure bismuth ferrite nanoparticles (BFO), as well as BFO nanofillers, which were doped by La element, Cr element as well as co-doped by La + Cr element, were prepared by the sol-gel method. Epoxy composites with various filler concentrations were prepared by blending nano-fillers with epoxy resin. The morphology and crystal structure of the filler were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) tests. The effects of different filler types and filler mass fraction on the surface flashover voltage, charge dissipation rate, and trap characteristics of epoxy resin composites were studied. The results showed that element doping with bismuth ferrite nanofillers could further increase the flash voltage of the composites. The flashover voltage of La + Cr elements co-doped composites with the filler mass fraction of 4 wt% was 45.2% higher than that of pure epoxy resin. Through data comparison, it is found that the surface charge dissipation rate is not the only determinant of the flashover voltage. Appropriately reducing the surface charge dissipation rate of epoxy resin composites can increase the flashover voltage. Finally, combining with the distribution characteristics of the traps on the surface of the materials to explain the mechanism, it is found that the doping of La element and Cr element can increase the energy level depth and density of the deep traps of the composite materials, which can effectively improve the flashover voltage along the surface of the epoxy resin.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Effect of Bismuth Ferrite Nanometer Filler Element Doping on the Surface Insulation Properties of Epoxy Resin Composites

et al. 2021

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“…At the same time, the diffraction peaks are sharp, which indicates that the sample is pure phase BFO with good crystallinity. [ 27 ] The XRD diffractograms for PVP + BFO before and after calcination are shown in Figure 4B. There is no standard diffraction peak in BFO primary filaments, which indicating that BFO + PVP fibers are amorphous.…”

Section: Resultsmentioning

confidence: 99%

Effect of morphology and particle size of bismuth ferrite filler on the surface insulation of epoxy resin composites

et al. 2020

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The morphology and particle size of nanofillers have specific effects on their micro-distribution parameters in the polymer matrix and macro-properties of composites. In this study, bismuth ferrite nanoparticles (BFO) with different particle sizes were prepared by the sol-gel route, and bismuth ferrite nanofibers (fBFO) were synthesized by electrospinning method, then were blended with epoxy resin as a filler to prepare the epoxy composites with multiple filler concentrations. The morphology and crystal structure of the filler were characterized by SEM and XRD. The effect of filler morphology and particle size on the surface insulation of composites was studied. We found that fBFO nanofibers have better dispersion in epoxy matrix, and fBFO/EP composites have more excellent surface insulation properties. Meanwhile, as the particle size of the filler increases, the flashover voltages of the BFO/EP composites increase. Finally, the simulation model of electric field inside EP composites were established and the trap distribution was calculated by isothermal surface potential decay method. The influence mechanism of filler morphology and particle size on the surface insulation properties of EP composites was further analyzed. BFO particles and nanofibers as fillers blended with epoxy resin have a great engineering application potential.

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“…In another report, Zhu and co-workers have demonstrated the enhanced photocatalytic activity of Gd and Sn codoped BiFeO 3 −N-doped graphene composite, which was produced from the efficient transfer of electrons from Gd, Sn-BiFeO 3 nanoparticles to the N-doped graphene nanosheets, thereby enhanced the availability of holes for photocatalytic degradation of MO, under simulated solar light irradiations. 408 There are several reports in which BiFeO 3 is coupled with carbonaceous materials to form g-C 3 N 4 /BiFeO 3 , 322 BiFeO 3carbon, 409 and BiFeO 3 -graphene 410 binary composites with increased photocatalytic performance. The composites of pristine BiFeO 3 with other semiconductor materials are also studied and used for photocatalytic pollutant degradation, which includes different photocatalysts, viz., BiFeO 3 /Bi 25 FeO 40 , 411 BiFeO 3 −Ti 3 C 2 , 412 BiFeO 3 −ZrO 2 , 413 and BiFeO 3 −TiO 2 .…”

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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Recyclable adsorbent of BiFeO3/Carbon for purifying industrial dye wastewater via photocatalytic reproducible

Cited by 30 publications

References 39 publications

Effect of Bismuth Ferrite Nanometer Filler Element Doping on the Surface Insulation Properties of Epoxy Resin Composites

Effect of Bismuth Ferrite Nanometer Filler Element Doping on the Surface Insulation Properties of Epoxy Resin Composites

Effect of morphology and particle size of bismuth ferrite filler on the surface insulation of epoxy resin composites

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

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