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...read more
Citations
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Facile fabrication of 3D ferrous ion crosslinked graphene oxide hydrogel membranes for excellent water purification
TL;DR: In this paper, 3D graphene oxide hydrogel membranes (GOHMs) are fabricated by gelation of GO with ferrous ions via vacuum filtration, which can be used as crosslinkers to increase the bonding strength between GO nanosheets.
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Grand Challenges in Environmental Nanotechnology
TL;DR: In this paper, the authors have shown that the capacities of environmental nanotechnology can be further enlarged by the manipulation of the nanomaterials in terms of morphology (particle size and shape), microstructure (pore and surface) and composition (heterojunction and doping).
Journal ArticleDOI
In-situ synthesis of Fe and O co-doped g-C3N4 to enhance peroxymonosulfate activation with favorable charge transfer for efficient contaminant decomposition
TL;DR: In this article, an iron and oxygen co-doped graphite phase carbon nitride (Fe@O CN) is synthesized via a simple one-pot in-situ pyrolysis method.
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Peroxymonosulfate activation via CoP nanoparticles confined in nitrogen-doped porous carbon for enhanced degradation of sulfamethoxazole in wastewater with high salinity
TL;DR: In this paper , the catalysts of cobalt phosphide (CoP) nanoparticles confined in nitrogen-doped porous carbon were prepared using zeolitic imidazolate framework-67 (ZIF-67) as a template via calcination-oxidation-phosphorization, which were subsequently applied to activate peroxymonosulfate (PMS) for the degradation of sulfamethoxazole (SMX) in the water with high-salinity concentrations.
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Prospects of refinery switching from conventional to integrated: An opportunity for sustainable investment in the petrochemical industry
TL;DR: In this paper , the authors discuss the current oil price variation, heavy oil production, and technical challenges to convert heavy crude to chemical (c-t-c) or petrochemical (c -t-p).
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
Dehui Deng,Liang Yu,Xiaoqi Chen,Guoxiong Wang,Li Jin,Xiulian Pan,Jiao Deng,Gongquan Sun,Xinhe Bao +8 more
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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Generation of sulfate radical through heterogeneous catalysis for organic contaminants removal: Current development, challenges and prospects
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