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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

Catalytic degradation of sulfamethoxazole through peroxymonosulfate activated with expanded graphite loaded CoFe2O4 particles

TL;DR: In this article, the exfoliated graphite loaded CoFe2O4 was prepared as a heterogeneous catalyst to activate peroxymonosulfate for the catalytic degradation of sulfamethoxazole (SMX) in water.
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New Insights into the Generation of Singlet Oxygen in the Metal-Free Peroxymonosulfate Activation Process: Important Role of Electron-Deficient Carbon Atoms

TL;DR: Nitrogen-doped carbon nanosheets derived from graphitic carbon nitride was developed for activation of PMS and elucidation of 1O2 production, highlighting the important role of electron-deficient carbon atoms in 1O1 generation from PMS oxidation and furnishes theoretical support for further relevant studies.
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N-doped graphitic biochars from C-phycocyanin extracted Spirulina residue for catalytic persulfate activation toward nonradical disinfection and organic oxidation.

TL;DR: The biochar based nonradical system can provide a mild and high-efficiency strategy for disinfection in waste and drinking water by green carbocatalysis and maintain a superior oxidation efficiency in complicated water matrix and long-term stable operation.
Journal ArticleDOI

Sulfate saturated biosorbent-derived Co-S@NC nanoarchitecture as an efficient catalyst for peroxymonosulfate activation

TL;DR: In this paper, sulfate saturated bio-sorbent and cobalt(II) acetate as precursors were used for the homogeneous assembly of S-Co3O4 in nitrogen doped carbon martix.
Journal ArticleDOI

Nitrogen-doped graphene and graphene quantum dots: A review onsynthesis and applications in energy, sensors and environment.

TL;DR: Doping of nitrogen is a promising strategy to modulate chemical, electronic, and structural functionalities of graphene (G)and graphene quantum dots (GQDs) for their outstanding properties in energy and environmental applications.
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.
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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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