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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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Journal ArticleDOI

Graphene- and CNTs-based carbocatalysts in persulfates activation: Material design and catalytic mechanisms

TL;DR: In this article, a critical review on the recent practical and theoretical development in graphene and carbon nanotubes (CNTs)-based materials as carbocatalysts for the activation of peroxymonosulfate (PMS) and peroxydisulfate(PDS).
Journal ArticleDOI

Single-atom catalysis in advanced oxidation processes for environmental remediation.

TL;DR: In this paper, the authors highlight the synthetic strategies, characterisation, and computation of carbon-based SACs, and for the first time, showcase their innovative applications in advanced oxidation processes.
Journal ArticleDOI

Electronic Structure Modulation of Graphitic Carbon Nitride by Oxygen Doping for Enhanced Catalytic Degradation of Organic Pollutants through Peroxymonosulfate Activation.

TL;DR: These findings not only propose a novel PMS activation mechanism in terms of simultaneous PMS oxidation and reduction for the production of nonradical and radical species but also provide a valuable insight for the development of efficient metal-free catalysts through nonmetal doping toward the persulfate-based environmental cleanup.
Journal ArticleDOI

Activation of Peroxydisulfate on Carbon Nanotubes: Electron-Transfer Mechanism.

TL;DR: This study proposed an electrochemical technique for investigating the nonradical oxidation pathway of organics in carbon nanotubes-catalyzed peroxydisulfate (PDS) activation, and the nature of nonradical pathway was unveiled to be an electron-transfer regime without singlet oxygenation process.
Journal ArticleDOI

In-situ pyrolysis of Enteromorpha as carbocatalyst for catalytic removal of organic contaminants: Considering the intrinsic N/Fe in Enteromorpha and non-radical reaction

TL;DR: An environmentally friendly, facile, and economical Fe/N co-doped carbonaceous material (Fe-N@C) was prepared by the in-situ pyrolysis of Fe rich Enteromorpha biomass for peroxymonosulfate activation and organic contaminants degradation.
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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