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Journal ArticleDOI

Metal-free carbocatalysis in advanced oxidation reactions

TLDR
This Account showcases the recent contributions to metal-free catalysis in advanced oxidation, including design of nanocarbon catalysts, exploration of intrinsic active sites, and identification of reactive species and reaction pathways, and offers perspectives on carbocatalysis for future environmental applications.
Abstract
ConspectusCatalytic processes have remarkably boosted the rapid industrializations in chemical production, energy conversion, and environmental remediation. As one of the emerging applications of carbocatalysis, metal-free nanocarbons have demonstrated promise as catalysts for green remediation technologies to overcome the poor stability and undesirable metal leaching in metal-based advanced oxidation processes (AOPs). Since our reports of heterogeneous activation of persulfates with low-dimensional nanocarbons, the novel oxidative system has raised tremendous interest for degradation of organic contaminants in wastewater without secondary contamination. In this Account, we showcase our recent contributions to metal-free catalysis in advanced oxidation, including design of nanocarbon catalysts, exploration of intrinsic active sites, and identification of reactive species and reaction pathways, and we offer perspectives on carbocatalysis for future environmental applications.The journey starts with the dis...

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Citations
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Deep Eutectic Solvent Assisted Facile and Efficient Synthesis of Nitrogen-Doped Magnetic Biochar for Hexavalent Chromium Elimination: Mechanism and Performance Insights

TL;DR: In this article , a green deep eutectic solvent (DES) produced by complexing of FeCl 3 and urea was adopted for the first time to assist the facile and efficient preparation of nitrogen-doped magnetic biochar (NMBC) by using peanut shell (PS) as raw stock.
Journal ArticleDOI

Developing functional carbon nitride materials for efficient peroxymonosulfate activation: From interface catalysis to irradiation synergy

TL;DR: In this article , a review of recent work on the activation of peroxymonosulfate (PMS) with carbon nitride (CN) materials is presented, and the possible directions and future prospects for this field of research in view of its current uncertainties and bottlenecks are presented.
Journal ArticleDOI

Powdered activated carbon-catalyzed chlorine oxidation of bisphenol-A and methylene blue: Identification of the free radical and effect of the carbon surface functional group.

TL;DR: The effect of powdered activated carbon (PAC) on chlorine oxidation is not well understood, therefore, a study was designed to further investigate the chlorine oxidation mechanism with the presence of PAC, which showed a significant increase in reaction rates with the addition of PAC as mentioned in this paper.
Journal ArticleDOI

Synthesis of low-density polyethylene derived carbon nanotubes for activation of persulfate and degradation of water organic micropollutants in continuous mode.

TL;DR: In this paper , carbon nanotubes (CNTs) were used as catalysts in persulfate activation for the first time and four catalysts were prepared by wetness impregnation and co-precipitation (using Al2O3, Ni, Fe and or Al) and implemented to grow CNTs by chemical vapour deposition (CVD) using low-density polyethylene (LDPE) as carbon feedstock.
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Carbon framework encapsulated CoMn2O4 spinel derived from electrospun nanofiber coupling with photothermal approach reinforces PMS activation to eliminate 2,4-dichlorophenol

TL;DR: In this article , a multidimensional coupling by exploiting metal-carbon interaction, dual-metal redox cycle, and photothermal synergetic catalysis remains rare in AOP.
References
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Journal ArticleDOI

Sulfur and Nitrogen Dual-Doped Mesoporous Graphene Electrocatalyst for Oxygen Reduction with Synergistically Enhanced Performance†

TL;DR: In this paper, Mesoporous graphene doped with both N and S atoms (N-S-G) was prepared in one step and studied as an electrochemical catalyst for the oxygen reduction reaction (ORR).
Journal ArticleDOI

Generation of sulfate radical through heterogeneous catalysis for organic contaminants removal: Current development, challenges and prospects

TL;DR: In this paper, the authors provide a state-of-the-art review on the development in heterogeneous catalysts including single metal, mixed metal, and nonmetal carbon catalysts for organic contaminants removal, with particular focus on peroxymonosulfate (PMS) activation.
Journal ArticleDOI

Environmental applications of carbon-based nanomaterials.

TL;DR: This review critically assesses the contributions of carbon-based nanomaterials to a broad range of environmental applications: sorbents, high-flux membranes, depth filters, antimicrobial agents, environmental sensors, renewable energy technologies, and pollution prevention strategies.
Journal ArticleDOI

Iron Encapsulated within Pod‐like Carbon Nanotubes for Oxygen Reduction Reaction

TL;DR: Chainmail for catalysts: a catalyst with iron nanoparticles confined inside pea-pod-like carbon nanotubes exhibits a high activity and remarkable stability as a cathode catalyst in polymer electrolyte membrane fuel cells (PEMFC), even in presence of SO(2).
Journal ArticleDOI

Nanocarbons for the Development of Advanced Catalysts

TL;DR: This poster presents a probabilistic procedure to evaluate the response of the H2O/O2 mixture to various pyrolysis conditions and shows promising results in both the horizontal and the vertical domain.
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