Nanoarchitecturing bimetallic manganese cobaltite spinels for sonocatalytic degradation of oxytetracycline

Hassandoost, Ramin; Kotb, Ahmed; Movafagh, Zahra; Esmat, Mohamed; Guégan, Régis; Endo, Satoshi; Jevasuwan, Wipakorn; Fukata, Naoki; Sugahara, Yoshiyuki; Khataee, Alireza; Yamauchi, Yusuke; Ide, Yusuke; Doustkhah, Esmail

doi:10.1016/j.cej.2021.133851

Cited by 76 publications

(21 citation statements)

References 65 publications

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“…The last point deserves some further theoretical insights aiming to quantify the synergistic effects set out therein. Recently, some authors analyzed the effects of multiple superposed phenomena on pollutant degradation kinetics in aqueous medium by sonocatalysis, photocatalysis and combined sonophotocatalysis on MOFs [ 55 ] and on bimetallic oxides [ 56 ]. It is interesting to extend their effective approach, concerning reaction kinetics, to a context related to thermodynamics of sorption equilibria, which is pertinent to the present study.…”

Section: Resultsmentioning

confidence: 99%

ZnAl-SO4 Layered Double Hydroxide and Allophane for Cr(VI), Cu(II) and Fe(III) Adsorption in Wastewater: Structure Comparison and Synergistic Effects

et al. 2022

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Owing to their structure, layered double hydroxides (LDHs) and allophane are nowadays considered as promising materials for application in different fields. The goal of this work is to compare the efficacy of allophane and ZnAl-SO4 LDH to remove, by adsorption, some cationic and anionic pollutants from industrial wastewater. Both compounds were synthesized via the co-precipitation route (direct method) followed by hydrothermal treatment, obtaining nanoscopic crystallites with a partially disordered turbostratic (ZnAl-SO4 LDH) or amorphous (allophane) structure. The characterization of the obtained compounds was performed by means of powder x-ray diffraction (PXRD), thermal gravimetry analysis (TGA), field emission scanning electron microscopy analysis (FESEM), and Fourier-transform infrared spectroscopy (FT-IR). The sorbents were tested using wastewater produced by a real metalworking plant and containing ionic species such as Cu(II), Fe(III) and Cr(VI), whose concentration was measured by means of inductively coupled plasma-optical emission spectrometry (ICP-OES). This investigation represents an alternative procedure with respect to standard protocols based on customarily made and artificially lab-produced wastewaters. Both sorbents and their combination proved to be efficient in Cr(VI) removal, irrespective of the presence of cations like Cu(II) and Fe(III). A synergistic effect was detected for Cu(II) adsorption in a mixed allophane/LDH sorbent, leading to a Cu(II) removal rate of 89.5%.

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Section: Resultsmentioning

confidence: 99%

ZnAl-SO4 Layered Double Hydroxide and Allophane for Cr(VI), Cu(II) and Fe(III) Adsorption in Wastewater: Structure Comparison and Synergistic Effects

et al. 2022

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“…In this way, the k app was calculated to be about 0.0124, 0.0034, and 0.0024 1/min for combined Cu-THAp + PDS, bare Cu-THAp, and bare PDS processes, respectively. The synergy factor can be determined by Equation (3) [ 37 ]:

…”

Section: Resultsmentioning

confidence: 99%

“…Hence, the synergy factor is calculated to be 2.14. Recently, the degradation turnover (dTON) as a numerical value has been introduced as an easy tool to judge catalytic degradation systems [ 37 ]. The dTON of the control experiment was estimated to be 2.05 µmol h −1 g cat −1 .…”

Section: Resultsmentioning

confidence: 99%

In Situ Formation of Copper Phosphate on Hydroxyapatite for Wastewater Treatment

et al. 2022

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Here, we control the surface activity of hydroxyapatite (HAp) in wastewater treatment which undergoes peroxodisulfate (PDS) activation. Loading the catalytically active Cu species on HAp forms a copper phosphate in the outer layer of HAp. This modification turns a low active HAp into a high catalytically active catalyst in the dye degradation process. The optimal operational conditions were established to be [Cu–THAp]0 = 1 g/L, [RhB]0 = 20 mg/L, [PDS]0 = 7.5 mmol/L, and pH = 3. The experiments indicate that the simultaneous presence of Cu-THAp and PDS synergistically affect the degradation process. Additionally, chemical and structural characterizations proved the stability and effectiveness of Cu-THAp. Therefore, this work introduces a simple approach to water purification through green and sustainable HAp-based materials.

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“…Pure g-C 3 N 4 showed a very low catalytic performance due to the rapid recombination rate of the electron-hole pairs and poor light absorption [23]. In a typical sonocatalysis process, the explosion of acoustic bubbles release energy in the form of light which is known as sonoluminescence [26]. The emission of light under ultrasound irradiation will then excite g-C 3 N 4 to form electron-hole pairs leading to the generation of free radicals [27].…”

Section: Surface Analysismentioning

confidence: 99%

“…The electron in the CB has strong reduction potential that would reduce the oxygen present in the solution to a free radical that is known as a superoxide radical (•O 2 − ). The holes left in the VB would have high oxidizing potential that would be able to oxidize the water molecules and produce •OH [26]. The free radicals generated would degrade the dye molecule to carbon dioxide and water molecules.…”

Section: Possible Mechanisms For Degradation Of Malachite Greenmentioning

confidence: 99%

Enhanced Sonocatalytic Performance of Non-Metal Graphitic Carbon Nitride (g-C3N4)/Coconut Shell Husk Derived-Carbon Composite

et al. 2022

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This study focused on the modification of graphitic carbon nitride (g-C3N4) using carbon which was obtained from the pyrolysis of coconut shell husk. The sonocatalytic performance of the synthesized samples was then studied through the degradation of malachite green. In this work, pure g-C3N4, pure carbon and carbon/g-C3N4 composites (C/g-C3N4) at different weight percentages were prepared and characterized by using XRD, SEM-EDX, FTIR, TGA and surface analysis. The effect of carbon amount in the C/g-C3N4 composites on the sonocatalytic performance was studied and 10 wt% C/g-C3N4 showed the best catalytic activity. The optimization study was conducted by using response surface methodology (RSM) with a central composite design (CCD) model. Three experimental parameters were selected in RSM including initial dye concentration (20 to 25 ppm), initial catalyst loading (0.3 to 0.5 g/L), and solution pH (4 to 8). The model obtained was found to be significant and reliable with R2 value (0.9862) close to unity. The degradation efficiency of malachite green was optimized at 97.11% under the conditions with initial dye concentration = 20 ppm, initial catalyst loading = 0.5 g/L, solution pH = 8 after 10 min. The reusability study revealed the high stability of 10 wt% C/g-C3N4 as sonocatalyst. In short, 10 wt% C/g-C3N4 has a high potential for industrial application since it is cost effective, reusable, sustainable, and provides good sonocatalytic performance.

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Nanoarchitecturing bimetallic manganese cobaltite spinels for sonocatalytic degradation of oxytetracycline

Cited by 76 publications

References 65 publications

ZnAl-SO4 Layered Double Hydroxide and Allophane for Cr(VI), Cu(II) and Fe(III) Adsorption in Wastewater: Structure Comparison and Synergistic Effects

ZnAl-SO4 Layered Double Hydroxide and Allophane for Cr(VI), Cu(II) and Fe(III) Adsorption in Wastewater: Structure Comparison and Synergistic Effects

In Situ Formation of Copper Phosphate on Hydroxyapatite for Wastewater Treatment

Enhanced Sonocatalytic Performance of Non-Metal Graphitic Carbon Nitride (g-C3N4)/Coconut Shell Husk Derived-Carbon Composite

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