CoMoO<sub>4</sub> as a novel heterogeneous catalyst of peroxymonosulfate activation for the degradation of organic dyes

Fan, Ya-Nan; Ma, Wenjie; He, Jiaojie; Du, Yunchen

doi:10.1039/c7ra04761d

Cited by 77 publications

(17 citation statements)

References 54 publications

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“…Figure shows the effect of PMS concentration on the degradation of pirimicarb. The degradation efficiency of pirimicarb was enhanced from 71% at 0.5 mM PMS to 97% at 1.0 mM in 4 h. It is evident that increasing the PMS concentration can make more HSO 5 − attach to the active sites of ZnMoO 4 , which facilitates the generation of radical species (see below) . However, further increase in PMS concentration above 1.0 mM (for instance, 1.5 mM) did not lead to significant additional enhancement in the photodegradation of pirimicarb.…”

Section: Resultsmentioning

confidence: 99%

Accelerated ZnMoO₄ photocatalytic degradation of pirimicarb under UV light mediated by peroxymonosulfate

Chen

Fan

Shaya

et al. 2019

Applied Organom Chemis

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This paper reports the optimized synthesis of zinc molybdates by the hydrothermal method and the combination of ZnMoO4 and peroxymonosulfate (PMS) under UV irradiation for the degradation of pirimicarb. The as‐prepared ZnMoO4 photocatalyst was characterized using X‐ray diffraction, scanning electron microscopy, X‐ray photoelectron spectroscopy and UV–visible diffuse reflectance spectroscopy. The effects of operational parameters in the ZnMoO4/PMS/UV system were evaluated and the results indicated the highest performance is achieved with pH = 9.0, 1 mM PMS and 1 g l−1 ZnMoO4. The degradation efficiency of pirimicarb was 98% after 3 h in the photocatalytic process. A photodegradation mechanism is proposed based on scavenger and electron spin resonance studies to decide the main active species and by using chromatography–mass spectrometry to identify the major intermediates. Pirimicarb degradation is found to be mainly driven by holes and •O2− radicals, with the contribution of •OH and SO4•− radicals enhancing the process in the tested catalytic system. The mechanism is proposed involving two routes, dealkylation and decarbamoylation. Lastly, the zinc molybdate photocatalyst is shown to be stable, reusable and efficient in the removal of pirimicarb from real water samples in the presence of PMS, demonstrating potential application in the treatment of contaminated and/or environmental water.

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Section: Resultsmentioning

confidence: 99%

Accelerated ZnMoO₄ photocatalytic degradation of pirimicarb under UV light mediated by peroxymonosulfate

Chen

Fan

Shaya

et al. 2019

Applied Organom Chemis

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“…Anatase and rutile phase showed the different result in size distribution. The size of anatase phase powder was increased with the higher calcinations temperature, but in the case of ru-tile phase, size got increased very slightly [210,211]. Up to 300 °C, there is no change in structure, crystallinity, and morphology.…”

Section: Effect Of Calcinationsmentioning

confidence: 94%

A Review Paper on Heterogeneous Fenton Catalyst: Types of Preparation, Modification Techniques, Factors Affecting the Synthesis, Characterization, and Application in the Wastewater Treatment

Kumar

Mohapatra

Dharmadhikari

et al. 2019

Bull. Chem. React. Eng. Catal.

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This comprehensive review focuses on the different factors, modification in the synthesis method, characterization and application of heterogeneous catalyst in the wastewater treatment based on the Fenton process. The present review highlights the different catalyst preparation methods like wet impregnation method, hydrothermal method, sol-gel method, precipitation method and their application to treat different recalcitrant organic chemicals. Major heterogeneous catalyst synthesis methods were discussed with their excellent workability. The importance of modification through physical and chemical method was also reported. Different catalyst, pollutants and optimum parametric conditions available in the literature along with some relevant studies are summarized. The effect of factors like pH, calcination and some other modifiers on the synthesis and their efficiency in the wastewater treatment has been described. The important characterization of synthesized catalysts explaining their working efficiency has also been discussed. In the final section, the application of heterogeneous catalyst synthesized by different methods in the wastewater/effluent treatment has been investigated. The main aim of this review is to find out the influence of process parameters and catalytic method on degradation/decolorization of organic compounds present in industrial or synthetic wastewater. Copyright © 2020 BCREC Group. All rights reserved

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“…Antibiotics can also damage human cells and even produce irreversible damage to human nerves. For example, in the 1980s, the abuse of antibiotics has caused huge amounts of adverse reactions and even death in patients [4]. Therefore, it is urgent to find an effective method to dispose organic pollutants in the environment.…”

Section: Research Backgroundmentioning

confidence: 99%

An Overview of Advanced Oxidation Process and Outlook

Sun¹

2022

IOP Conf. Ser.: Earth Environ. Sci.

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With the development of industry and agriculture, water contamination comes more and more serious even threatens human health. Advanced oxidation processes are widely used in waste water treatment because of their high efficiency, among them peroxymonosulfate (PMS) activate by catalysts to release sulfate radicals and hydroxyl radicals is the best way of removing recalcitrant organic pollutants in water. Cobalt ion and cobalt oxides can activate PMS efficiently, however their high toxicity will contaminate the environment terribly and even cause human cancer, which restrains the extensive utilization. Compared with cobalt, manganese is more environment-friendly with low toxicity and abundant content, meanwhile manganese oxides are given excessive focus due to its high catalytic efficiency, which makes it can be used in practical situations.

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CoMoO₄ as a novel heterogeneous catalyst of peroxymonosulfate activation for the degradation of organic dyes

Cited by 77 publications

References 54 publications

Accelerated ZnMoO₄ photocatalytic degradation of pirimicarb under UV light mediated by peroxymonosulfate

Accelerated ZnMoO₄ photocatalytic degradation of pirimicarb under UV light mediated by peroxymonosulfate

A Review Paper on Heterogeneous Fenton Catalyst: Types of Preparation, Modification Techniques, Factors Affecting the Synthesis, Characterization, and Application in the Wastewater Treatment

An Overview of Advanced Oxidation Process and Outlook

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CoMoO4 as a novel heterogeneous catalyst of peroxymonosulfate activation for the degradation of organic dyes

Cited by 77 publications

References 54 publications

Accelerated ZnMoO4 photocatalytic degradation of pirimicarb under UV light mediated by peroxymonosulfate

Accelerated ZnMoO4 photocatalytic degradation of pirimicarb under UV light mediated by peroxymonosulfate

A Review Paper on Heterogeneous Fenton Catalyst: Types of Preparation, Modification Techniques, Factors Affecting the Synthesis, Characterization, and Application in the Wastewater Treatment

An Overview of Advanced Oxidation Process and Outlook

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CoMoO₄ as a novel heterogeneous catalyst of peroxymonosulfate activation for the degradation of organic dyes

Accelerated ZnMoO₄ photocatalytic degradation of pirimicarb under UV light mediated by peroxymonosulfate

Accelerated ZnMoO₄ photocatalytic degradation of pirimicarb under UV light mediated by peroxymonosulfate