Synthesis and characterization of calcium-doped lanthanum manganite nanowires as a photocatalyst for degradation of methylene blue solution under visible light irradiation

Arabi, Abbasali; Fazli, Mostafa; Ehsani, M.H.

doi:10.1007/s12034-018-1590-6

Cited by 39 publications

(17 citation statements)

References 42 publications

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“…This model is used to identify the relationship of first-order rate constant with the initial substrate concentration. 44 Thus, the data were plotted in the pseudo-first-order rate model as in Eqn (2):…”

Section: Resultsmentioning

confidence: 99%

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Enhanced visible light photocatalysis with E‐waste‐based V₂O₅/zinc–ferrite: BTEX degradation and mechanism

Mohan

Lim

Lee

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: BTEX removal is attracting increased attention owing to the detrimental impacts caused to human health, the foremost being neurological impairments. Thus, this study intended to assess the efficiency of zinc-ferrite/V 2 O 5 (ZFV) nanocomposite for photocatalytic degradation of BTEX isomers in aqueous solution. Furthermore, the developed catalyst was magnetically separable, which may reduce the ecological impacts of the catalyst. RESULTS: The ZFV nanocomposite was prepared by a solvothermal process using V 2 O 5 (extracted from treated E-waste) and zincferrite (synthesized through a chemical co-precipitation method). The integration of elements in the ZFV nanocomposite was confirmed using powder X-ray diffraction, Fourier transform infrared, Raman, diffuse reflectance and electrochemical impedance spectroscopies and scanning electron microscopy. Maximum BTEX degradation of 95% was achieved at 50 mg L −1 initial BTEX concentration, 0.50 g L −1 catalyst and pH 3. A minor decrease in the degradation efficiency (10%) of the catalyst was observed at the fifth cycle. The presence of H 2 O 2 increased the degradation efficiency to 98% owing to the prevention of electron-hole recombination, while NaCl (60%), Na 2 CO 3 (63%), NaNO 3 (80%) and Na 2 SO 4 (72%) decreased the degradation efficiency due to their hydroxyl scavenging properties. The degradation pathway was elucidated using gas chromatography with mass spectral studies. CONCLUSIONS: The findings of the present study relating to BTEX degradation using the magnetic ZFV nanocomposite and the degradation mechanism throw light on the environmental applications of the ZFV composite. The composite could be an alternative for the remediation of BTEX-contaminated wastewaters.

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Section: Resultsmentioning

confidence: 99%

“…(a)). This model is used to identify the relationship of first‐order rate constant with the initial substrate concentration . Thus, the data were plotted in the pseudo‐first‐order rate model as in Eqn (2):

- ((), d_{C} / d_{t}) = K_{app} C_{t}

where K app and t indicate the rate constant and reaction time, respectively.…”

Section: Resultsmentioning

confidence: 99%

Enhanced visible light photocatalysis with E‐waste‐based V₂O₅/zinc–ferrite: BTEX degradation and mechanism

Mohan

Lim

Lee

et al. 2020

J of Chemical Tech & Biotech

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“…The above pseudo first-order kinetic has been reported in many photocatalytic studies [30][31][32]. The rate constant was estimated from the slope of ln(C/C 0 ) vs. time, plotted under optimized conditions.…”

Section: Kinetic Study Of Photocatalytic Removal Reactionmentioning

confidence: 91%

Photo-catalytic dye degradation of methyl orange using zirconia–zeolite nanoparticles

et al. 2019

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In this research, the dye photo-catalytic removal was investigated using zirconia (ZrO 2) nanocatalysts, zeolite (Ze), ZrO 2-Ze with different percentages and optimized ZrO 2-Ze doped via urea, copper oxide and cerium oxide. In order to determine the optimal conditions, the effects of different catalysts and parameters such as dye concentration, UV lamp power, amount of the loaded catalyst and pH were investigated. The response surface methodology was used to obtain optimal experimental conditions. Physical and chemical properties of materials were investigated by X-ray diffraction, Fourier transform infrared, scanning electron microscopy and Brunauer-Emmett-Teller. Completely methyl orange (MO)dye removal (100%) was achieved at optimal conditions under UV light during 80 min. The optimal operational condition for MO photo-catalytic decomposition using an optimal N-doped 10 wt% ZrO 2-zeolite nanocatalyst was obtained at UV lamp power, pH, catalyst loading and dye concentration of 15 W, 3, 0.4 g l −1 and 5 mg l −1 , respectively. Photo-catalytic degradation kinetics of MO described well using pseudo-first order which is in accordance with the Langmuir-Hinshelwood model (k app = 0.031 min −1).

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“…The composite demonstrated an enhancement in light absorption and reduced recombination rate as compared to the pure LaTiO 3 ; as a result, complete degradation of atrazine pollutant within 40 min of irradiation was observed. Numerous reports have shown that incorporation or decoration of lanthanum-based perovskites with other metals or semiconductors results in pronounced enhancement in the photocatalysis (Arabi et al, 2018;Yahya et al, 2019;Nakhostin Panahi et al, 2020).…”

Section: Lanthanum-based Perovskites In Photocatalysismentioning

confidence: 99%

Perovskite Oxide–Based Materials for Photocatalytic and Photoelectrocatalytic Treatment of Water

Nkwachukwu

Arotiba

2021

Front. Chem.

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Meeting the global challenge of water availability necessitates diversification from traditional water treatment methods to other complementary methods, such as photocatalysis and photoelectrocatalysis (PEC), for a more robust solution. Materials play very important roles in the development of these newer methods. Thus, the quest and applications of a myriad of materials are ongoing areas of water research. Perovskite and perovskite-related materials, which have been largely explored in the energy sectors, are potential materials in water treatment technologies. In this review, attention is paid to the recent progress in the application of perovskite materials in photocatalytic and photoelectrocatalytic degradation of organic pollutants in water. Water treatment applications of lanthanum, ferrite, titanate, and tantalum (and others)-based perovskites are discussed. The chemical nature and different synthetic routes of perovskites or perovskite composites are presented as fundamental to applications.

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Synthesis and characterization of calcium-doped lanthanum manganite nanowires as a photocatalyst for degradation of methylene blue solution under visible light irradiation

Cited by 39 publications

References 42 publications

Enhanced visible light photocatalysis with E‐waste‐based V₂O₅/zinc–ferrite: BTEX degradation and mechanism

Enhanced visible light photocatalysis with E‐waste‐based V₂O₅/zinc–ferrite: BTEX degradation and mechanism

Photo-catalytic dye degradation of methyl orange using zirconia–zeolite nanoparticles

Perovskite Oxide–Based Materials for Photocatalytic and Photoelectrocatalytic Treatment of Water

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Synthesis and characterization of calcium-doped lanthanum manganite nanowires as a photocatalyst for degradation of methylene blue solution under visible light irradiation

Cited by 39 publications

References 42 publications

Enhanced visible light photocatalysis with E‐waste‐based V2O5/zinc–ferrite: BTEX degradation and mechanism

Enhanced visible light photocatalysis with E‐waste‐based V2O5/zinc–ferrite: BTEX degradation and mechanism

Photo-catalytic dye degradation of methyl orange using zirconia–zeolite nanoparticles

Perovskite Oxide–Based Materials for Photocatalytic and Photoelectrocatalytic Treatment of Water

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Enhanced visible light photocatalysis with E‐waste‐based V₂O₅/zinc–ferrite: BTEX degradation and mechanism

Enhanced visible light photocatalysis with E‐waste‐based V₂O₅/zinc–ferrite: BTEX degradation and mechanism