Spinel-type cobalt-manganese oxide catalyst for degradation of Orange II using a novel heterogeneous photo-chemical catalysis system

Ni, Qingzhuo; Ma, Jianfeng; Fan, Changhai; Kong, Yong; Peng, Mingguo; Komarneni, Sridhar

doi:10.1016/j.ceramint.2018.07.184

Cited by 38 publications

(4 citation statements)

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“…The variable oxidation states of cobalt have made the particles applicable to many fields [45]. Cobalt oxide plays a vital role in many applications, including pollutants sensing, degradation of harmful materials, drug delivery systems, supercapacitors, and storage devices [46][47][48][49][50][51][52][53][54].…”

Section: Cobalt Oxidementioning

confidence: 99%

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

et al. 2023

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For applications involving water cleanup, metal oxide nanoparticles are exceptionally successful. They are useful for the adsorption and photocatalytic destruction of organic pollutants due to their distinctive qualities, which include their wide surface/volume area, high number of active sites, porous structure, stability, recovery, and low toxicity. Metal oxide nanomaterials have drawn a lot of attention from researchers in the past ten years because of their various production pathways, simplicity in surface modification, abundance, and inexpensive cost. A wide range of metal oxides, such as iron oxides, MgO, TiO2, ZnO, WO3, CuO, Cu2O, metal oxides composites, and graphene–metal oxides composites, with variable structural, crystalline, and morphological features, are reviewed, emphasizing the recent development, challenges, and opportunities for adsorptive removal and photocatalytic degradation of organic pollutants such as dyes, pesticides, phenolic compounds, and so on. In-depth study of the photocatalytic mechanism of metal oxides, their composites, and photocatalytically important characteristics is also covered in this paper. Metal oxides are particularly effective photocatalysts for the degradation of organic pollutants due to their high photodegradation efficiency, economically sound methods for producing photo-catalytic materials, and precise band-gap engineering. Due to their detrimental effects on human health, pesticides—one of the highly hazardous organic pollutants—play a significant part in environmental contamination. Depending on where they come from and who they are targeting, they are categorized in various ways. Researchers focusing on metal oxides and their composites for the adsorptive and photocatalytic degradation of pesticides would find the review to be a beneficial resource. Detailed information on many pesticides, difficulties associated with pesticides, environmental concentration, and the necessity of degradation has been presented.

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Section: Cobalt Oxidementioning

confidence: 99%

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

et al. 2023

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“…This equilibrium will continue until PS is exhausted, as shown in eqn ( 7)-( 11). 41,42 Furthermore, the synergistic effect of charge transfers between Co 2+ /Co 3+ and Mn 2+ /Mn 3+ redox pairs in MnCo 2 O 4 can also accelerate the electron transfer efficiency, improve the activation efficiency, and promote the generation of free radicals. The standard oxidation-reduction potential of Co 3+ /Co 2+ was 1.92 V, while that of Mn 3+ /Mn 2+ was 1.51 V, which corroborated that the reduction of Co 3+ by Mn 2+ was thermodynamically feasible (eqn (12)).…”

Section: Degradation Performancementioning

confidence: 99%

Synergistic activation of persulfate by a manganese cobalt oxide/reduced graphene oxide nanocomposite with enhanced degradation of trichloroethylene

Zhang,

Ji,

Song

et al. 2023

RSC Adv.

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“…In the next stage of this work, the influence of Co 2+ ions, which are widely used in the catalyst process [57][58][59] on the formation of calcium silicates hydrates was investigated. It was determined, that by increasing hydrothermal treatment temperature to 200°C in CaO-SiO 2 -Al 2 O 3 -Co(NO 3 ) 2 -H 2 O system C-S-H (I), C-S-H (II) and calcite (due to carbonization in air conditioning chamber) were formed (Figure 7, curve 1).…”

Section: The Influence Of Co 2+ Ions On the Calcium Silicate Hydratesmentioning

confidence: 99%

Influence of Cr³⁺, Co²⁺ and Cu²⁺ on the formation of calcium silicates hydrates under hydrothermal conditions at 200 °C

Dambrauskas

Knabikaite

Eisinas

et al. 2020

Journal of Asian Ceramic Societies

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This work aims to investigate the influence of Cr 3+ , Co 2+ and Cu 2+ on the formation of calcium silicates hydrates in CaO-SiO 2-Al 2 O 3-H 2 O system under hydrothermal conditions. The dry primary mixture with the molar ratio CaO/(SiO 2 + Al 2 O 3) = 1.5 and Al 2 O 3 /(Al 2 O 3 + SiO 2) = 0.05 was mixed with heavy metal nitrate solutions (metal ions concentration-10 g/l) to reach the water/solid ratio of the suspension equal to 10.0. The hydrothermal synthesis was carried out in unstirred suspensions, under saturated steam pressure at 200°C temperature for 0-72 hours. It was determined that nature of metal ions have influence on both mineral composition and thermal stability of synthesis products. It was obtained that by increasing synthesis temperature up to 200°C, all Cr 3+ and Co 2+ ions were intercalated into the structure of synthesis products. Meanwhile Cu 2+ ions participate in chemical reactions and as a result copper oxide were formed. The products of synthesis were characterized by STA, DSC, XRD and AAS analyses.

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Spinel-type cobalt-manganese oxide catalyst for degradation of Orange II using a novel heterogeneous photo-chemical catalysis system

Cited by 38 publications

References 38 publications

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

Synergistic activation of persulfate by a manganese cobalt oxide/reduced graphene oxide nanocomposite with enhanced degradation of trichloroethylene

Influence of Cr³⁺, Co²⁺ and Cu²⁺ on the formation of calcium silicates hydrates under hydrothermal conditions at 200 °C

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Spinel-type cobalt-manganese oxide catalyst for degradation of Orange II using a novel heterogeneous photo-chemical catalysis system

Cited by 38 publications

References 38 publications

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

Synergistic activation of persulfate by a manganese cobalt oxide/reduced graphene oxide nanocomposite with enhanced degradation of trichloroethylene

Influence of Cr3+, Co2+ and Cu2+ on the formation of calcium silicates hydrates under hydrothermal conditions at 200 °C

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Influence of Cr³⁺, Co²⁺ and Cu²⁺ on the formation of calcium silicates hydrates under hydrothermal conditions at 200 °C