Environmental application of MgMn-layered double oxide for simultaneous efficient removal of tetracycline and Cd pollution: Performance and mechanism

Chen, Meiqing; Wu, Pingxiao; Huang, Zhiyan; Liu, Junqin; Li, Yihao; Zhu, Nengwu; Dang, Zhi; Bi, Yinzhi

doi:10.1016/j.jenvman.2019.06.002

Cited by 70 publications

(15 citation statements)

References 58 publications

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“…As compared to the catalysts in recent studies (Table S1), referring to TC degradation by PMS activation, hexagonal 5% Cu–Mo 2 C at present work has outstanding TC removal ability. − Besides, from the perspective of practical application, the effects of various reaction parameters, coexisting anions and cations, different water matrixes, and the possible degradation mechanism and pathway on TC removal were also systematically explored. Thus, the abovementioned analysis demonstrates that hexagonal 5% Cu–Mo 2 C would be an advanced catalyst for excellent PMS activation for organic pollutant control.…”

Section: Resultsmentioning

confidence: 85%

Emerging Hexagonal Mo₂C Nanosheet with (002) Facet Exposure and Cu Incorporation for Peroxymonosulfate Activation Toward Antibiotic Degradation

Yang

Chen

Jia

et al. 2021

ACS Appl. Mater. Interfaces

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The catalyst with a special exposed active facet and multivalent element synergism is much desired for advanced oxidation progress (AOP) reaction. Herein, an emerging substrate, Cu-incorporated Mo2C, with an active (002) facet exposed was developed by one-step calcination to activate peroxymonosulfate (PMS) toward antibiotic degradation. Combining the multivalent Cu–Mo synergistic effect and Cu complexing interaction, Cu was incorporated onto the Mo2C surface to further enhance its antibiotic removal through PMS activation. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) measurements indicated the 5% Cu–Mo2C exhibited in the hexagonal nanosheet with Cu uniformly dispersed on the surface. Moreover, 5% Cu–Mo2C displayed excellent PMS activation which could fully degrade the tetracycline (TC) within 20 min, and the degradation rate was found to be at least 20 times higher than those of pure Mo2C, classical Fe2O3 and Co3O4, and Fenton reaction of 5% Cu–Mo2C. The results were found to be ascribed to enhanced electrical conductivity, multivalent Cu–Mo synergism, and increased generation of active radicals which contributed in the sequence SO4•– > •OH > O2 •–. Surface chemical analysis combined with density functional theory (DFT) calculations confirmed that both Cu2+/Cu+ and Mo6+/Mo4+/Mo2+ redox cycles occurred on the (002) plane of Mo2C, which dominated more free electrons and mainly accounted for facilitating PMS activation. Meanwhile, systematically conditional experiments uncovered that the 5% Cu–Mo2C exhibited superb catalysis even under a wide pH and temperature, various natural polluted waters and coexisting ions, and long-time recycle. In addition, the as-prepared catalyst presented excellent adaptability for the degradation of different organic effluents originated from medical, dyeing, and beneficiation wastewaters. Considering its great performance, stability, and applicability, 5% Cu–Mo2C would be a capable candidate for PMS activation toward large-scale practical application in environmental remediation.

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Section: Resultsmentioning

confidence: 85%

Emerging Hexagonal Mo₂C Nanosheet with (002) Facet Exposure and Cu Incorporation for Peroxymonosulfate Activation Toward Antibiotic Degradation

Yang

Chen

Jia

et al. 2021

ACS Appl. Mater. Interfaces

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“…Among them, MgAl-LDH absorption of heavy metal ions is the topic of most existing studies. In addition to LDH consisting of divalent and trivalent metal cations, the absorption capacity of other LDH consisting of cations of other valences has been studied [33,34]. For example, LiAl-LDH intercalated with triethylenetetramine was used to absorb Nd 3+ and Sr 2+ .…”

Section: Structure and Compositionmentioning

confidence: 99%

Functionalized layered double hydroxide applied to heavy metal ions absorption: A review

Tang

Qiu

Lü

et al. 2020

Nanotechnology Reviews

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The use of functional material can help mitigate the pollution by heavy metals, which presents an array of risks to human production and life. This work provides a comprehensive review of the current knowledge on functionalized layered double hydroxide (LDH) as a heavy metal absorption material, by synthesizing the information from a total of 141 relevant publications published since 2005. LDH provides a potentially highly efficient method to adsorb heavy metal ions, which is simple to prepare and of low cost. The lack of functional groups and structural components of pristine LDH, however, limits the absorption capacity and widespread applications of LDH. Through intercalation, surface modification, or loading on substrates, functional groups or structural components are introduced into the pristine LDH to prepare functionalized LDH. In this process, the hydroxyl group and the valence state of [Mg(OH)6] octahedrons play a crucial role. Functionalized LDH can be endowed with selective absorption capacity and enhanced stability and recyclability. After adsorbing heavy metal ions, functionalized LDH can be readily separated from the liquid phase. These aspects are discussed, along with the structure and composition, shape and size, and synthesis methods and research tools of LDH. This work concludes with the discussion of preparation and utilization and a look to the future in terms of identified research needs regarding the preparation, use, and recycling (or upcycling) of economical and environmental-friendly LDH.

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“…The MgMn-LDH prepared by the homogeneous co-precipitation method had an excellent adsorption capacity for Cu(II), and the maximum immobilization capacity for Cu(II) reached 668 mg•g − 1 (Chen et al, 2020a). MgMn-LDH and its calcination product (MgMn-LDO) also showed good performance for Cd(II) immobilization (Chen et al, 2019b). The maximum adsorption capacity of a magnetic Mn-based composite (0.3Ma-MgMnLDO-a)…”

Section: Removal Of Heavy Metals From Watermentioning

confidence: 99%

The important role of the interaction between manganese minerals and metals in environmental remediation: a review

Chen

Qiu

et al. 2023

Environ Sci Pollut Res

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With illegal discharge of wastewater containing inorganic and organic pollutants, combined pollution is common and need urgent attention. Understanding the migration and transformation laws of pollutants in the environment has important guiding signi cance for environmental remediation. Due to the characteristics of adsorption, oxidation and catalysis, manganese minerals play important role in the environment fate of pollutants. This review summarizes the forms of interaction between manganese minerals and metals, the environmental importance of the interaction between manganese minerals and metals, and the contribution of this interaction in improving performance of Mn-based composite for environmental remediation. The literatures have indicated that the interactions between manganese minerals and metals involve in surface adsorption, lattice replacement and formation of association minerals. The synergistic or antagonistic effect resulted from the interaction in uence the puri cation of heavy metal and organism pollutant. The synergistic effect bene ted from the coordination of adsorption and oxidation, convenient electron transfer, abundant oxygen vacancies and fast migration of lattice oxygen. Based on the synergy, Mn-based composites have been widely used for environmental remediation. This review is helpful to fully understand the migration and transformation process of pollutants in the environment, expand the resource utilization of manganese minerals for environmental remediation.

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Environmental application of MgMn-layered double oxide for simultaneous efficient removal of tetracycline and Cd pollution: Performance and mechanism

Cited by 70 publications

References 58 publications

Emerging Hexagonal Mo₂C Nanosheet with (002) Facet Exposure and Cu Incorporation for Peroxymonosulfate Activation Toward Antibiotic Degradation

Emerging Hexagonal Mo₂C Nanosheet with (002) Facet Exposure and Cu Incorporation for Peroxymonosulfate Activation Toward Antibiotic Degradation

Functionalized layered double hydroxide applied to heavy metal ions absorption: A review

The important role of the interaction between manganese minerals and metals in environmental remediation: a review

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Environmental application of MgMn-layered double oxide for simultaneous efficient removal of tetracycline and Cd pollution: Performance and mechanism

Cited by 70 publications

References 58 publications

Emerging Hexagonal Mo2C Nanosheet with (002) Facet Exposure and Cu Incorporation for Peroxymonosulfate Activation Toward Antibiotic Degradation

Emerging Hexagonal Mo2C Nanosheet with (002) Facet Exposure and Cu Incorporation for Peroxymonosulfate Activation Toward Antibiotic Degradation

Functionalized layered double hydroxide applied to heavy metal ions absorption: A review

The important role of the interaction between manganese minerals and metals in environmental remediation: a review

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Emerging Hexagonal Mo₂C Nanosheet with (002) Facet Exposure and Cu Incorporation for Peroxymonosulfate Activation Toward Antibiotic Degradation

Emerging Hexagonal Mo₂C Nanosheet with (002) Facet Exposure and Cu Incorporation for Peroxymonosulfate Activation Toward Antibiotic Degradation