Efficient removal of paracetamol using LaCu1−xMxO3 (M = Mn, Ti) perovskites as heterogeneous Fenton-like catalysts

Carrasco-Díaz, M.R.; Castillejos, Eva; Cerpa-Naranjo, Arisbel; Cervantes, María Luisa Rojas

doi:10.1016/j.cej.2016.06.054

Cited by 71 publications

(37 citation statements)

References 64 publications

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“…Compared to previous studies, [47][48][49] the modied CFA catalyst (i.e., HFA) is more stable and reusable than the catalysts in other studies, which can be reused 6 times, 47 3 times 48 and 4 times. 49 The slow decay of the catalytic capacity of HFA contributes to the loss of active sites displayed in the form of Fe 2 O 3 on the…”

Section: Reusability and Stability Of Hfamentioning

confidence: 76%

“…For the investigation of the adsorption effect of the HFA, the adsorption isotherm was measured under xed experimental conditions (the reaction temperature was 25 C, the reaction time was 60 min, which is long enough to reach to the adsorption equilibrium, the pH was 2.0, the HFA loading was 10.0 g L À1 , and the V p-NP value was 100 mL) while only the p-NP concentration changed (1,3,7,10,15,20,30,40,50,60,70,80, and 90 mg L À1 ). The maximum adsorption capacity of the HFA was obtained from the adsorption isotherm.…”

Section: Preparation Of Hfamentioning

confidence: 99%

“…The Fenton process, as a classic AOP, can generate cOH via the reaction of Fe 2+ with H 2 O 2 . The reactions that occur in the Fenton process can be described as follows: [1][2][3] Fe 2+ + H 2 O 2 / Fe 3+ + OH À + cOH…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Catalytic oxidation of organic pollutants in wastewater via a Fenton-like process under the catalysis of HNO₃-modified coal fly ash

2017

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Section: Reusability and Stability Of Hfamentioning

confidence: 76%

Section: Preparation Of Hfamentioning

confidence: 99%

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Catalytic oxidation of organic pollutants in wastewater via a Fenton-like process under the catalysis of HNO₃-modified coal fly ash

2017

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“…Among them, LaFeO 3 and LaCuO 3 showed the highest activity. Furthermore, A‐ or B‐site doping of perovskites have been tried and verified to be able to affect the Fenton‐like activities and reusability in catalytic oxidation, such as Ce‐doping in Sr 1− x Ce x FeO 3 , Ti‐doping in LaCu x M 1− x O 3 (M = Mn, Ti, 0 ≤ x ≤ 0.8), and Cu‐doping in LaAl 1− x Cu x O 3 . The aim of hetero‐metal doping in perovskites is to produce more active sites of the low‐valence B‐site transition metals (i.e., Fe 2+ , Cu + , and Ti 3+ ) or to introduce oxygen vacancies, which can facilitate the generation of • OH ( E 0 = 1.9–2.7 V) in the presence of H 2 O 2 .…”

Section: Introductionmentioning

confidence: 99%

Fine‐Tuning Surface Properties of Perovskites via Nanocompositing with Inert Oxide toward Developing Superior Catalysts for Advanced Oxidation

Jiang

Miao

Duan

et al. 2018

Adv Funct Materials

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Cost-effective, stable, and highly efficient heterogeneous catalyst is the key challenge for wastewater treatment based on Fenton-like advanced oxidation processes. Perovskite oxides offer new opportunities because of their versatile compositions and flexible physiochemical properties. Herein, a new strategy is proposed that is different from the frequently used alien-metal doping, to tune surface properties of perovskite oxides by nanocompositing perovskite with inert oxide, resulting in improved activity and stability for catalytic oxidation. By in situ modification of LaFeO 3 with inert La 2 O 3 oxide through one-pot synthesis, several important surface properties such as surface defects, H 2 O 2 adsorption capacity, Fe 2+ concentration, and chargetransfer rate were improved, as well as resistance against iron leaching. In performance evaluation, among the various materials, La 1.15 FeO 3 (L 1.15 FO) composite shows the highest Fenton activity (0.0402 min −1 ) for activating H 2 O 2 to oxidize methyl orange, 2.5 times that of the pristine LaFeO 3 . Notably, in situ electron paramagnetic resonance analysis and radical scavenging tests unveil a faster generation of singlet oxygen as the dominant reactive species over L 1.15 FO, consequently a novel non-radical activation mechanism is proposed. Such improved performance is assigned to the strong coupling effect between the nanosized LaFeO 3 and La 2 O 3 in the hybrids, which fine-tune the surface properties of LaFeO 3 perovskite as superior Fenton catalysts.

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“…These solid catalysts can be regenerated via a simple separation step. However, in past few years, much attention has been paid to iron‐free catalysts, including manganese, cerium, gold, copper, ruthenium, etc. Among them, Cu‐based Fenton‐like catalysts show an eminent redox property as described in Eqs.…”

Section: Introductionmentioning

confidence: 99%

Fenton‐like degradation of rhodamine B over highly durable Cu‐embedded alumina: Kinetics and mechanism

Sheng

Sun

et al. 2017

AIChE Journal

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in Wiley Online Library (wileyonlinelibrary.com)Cu-embedded mesoporous alumina, as a Fenton-like catalyst prepared via a sol-gel method, showed excellent activity and durability for the degradation of refectory compounds. The origin of active sites for the generation of hydroxyl radicals (•OH) were thoroughly studied using multitechniques. Cu, as the only active element, could be penetrated into the bulk of alumina and some Cu atoms were embedded into the framework. The dynamic structure of surface Cu species (the variety of Cu 1 /Cu 21 ratio) during the reaction were determined as well. Furthermore, the structure plasticity of catalyst has proved by optimizing preparation and reaction conditions. A 98.53% degradation of RhB was recorded within 30 min, following a pseudo-first-order reaction rate expression. Electron spin resonance spectra and •OH scavenging experiments have confirmed that •OH is the main reactive oxidant for the elimination of RhB. By the surfaceenhanced Raman spectroscopy and gas chromatography-mass spectrometer results, plausible pathways of RhB degradation were elaborated.

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Efficient removal of paracetamol using LaCu1−xMxO3 (M = Mn, Ti) perovskites as heterogeneous Fenton-like catalysts

Cited by 71 publications

References 64 publications

Catalytic oxidation of organic pollutants in wastewater via a Fenton-like process under the catalysis of HNO₃-modified coal fly ash

Catalytic oxidation of organic pollutants in wastewater via a Fenton-like process under the catalysis of HNO₃-modified coal fly ash

Fine‐Tuning Surface Properties of Perovskites via Nanocompositing with Inert Oxide toward Developing Superior Catalysts for Advanced Oxidation

Fenton‐like degradation of rhodamine B over highly durable Cu‐embedded alumina: Kinetics and mechanism

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Efficient removal of paracetamol using LaCu1−xMxO3 (M = Mn, Ti) perovskites as heterogeneous Fenton-like catalysts

Cited by 71 publications

References 64 publications

Catalytic oxidation of organic pollutants in wastewater via a Fenton-like process under the catalysis of HNO3-modified coal fly ash

Catalytic oxidation of organic pollutants in wastewater via a Fenton-like process under the catalysis of HNO3-modified coal fly ash

Fine‐Tuning Surface Properties of Perovskites via Nanocompositing with Inert Oxide toward Developing Superior Catalysts for Advanced Oxidation

Fenton‐like degradation of rhodamine B over highly durable Cu‐embedded alumina: Kinetics and mechanism

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Catalytic oxidation of organic pollutants in wastewater via a Fenton-like process under the catalysis of HNO₃-modified coal fly ash

Catalytic oxidation of organic pollutants in wastewater via a Fenton-like process under the catalysis of HNO₃-modified coal fly ash