Adsorption performance of graphitic carbon nitride-based materials: Current state of the art

Fronczak, Maciej

doi:10.1016/j.jece.2020.104411

Cited by 77 publications

(24 citation statements)

References 147 publications

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“…(a) Development of metal-free carbon catalysts, i.e., fullerenes (C60), carbon nanotubes (CNTs), graphene, graphitic carbon nitride (g-C 3 N 4 ), ordered mesoporous carbon (OMC) in PMS/PDS advanced oxidation processes, and (b) scheme of PMS/PDS activation via radical and non-radical pathway for pollutant degradation. (Yi et al, 2020), adsorption (Fronczak, 2020), and photocatalytic oxidation of pollutants via PDS activation (Jiang et al, 2016). However, none has put together photocatalytic PDS and PMS activation via g-C 3 N 4 targeted for organic pollutant elimination.…”

Section: Introductionmentioning

confidence: 99%

Advanced activation of persulfate by polymeric g-C3N4 based photocatalysts for environmental remediation: A review

Hasija

Nguyen

Kumar

et al. 2021

Journal of Hazardous Materials

332

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Photocatalytic materials for photocatalysis is recently proposed as a promising strategy to address environmental remediation. Metal-free graphitic carbon nitride (g-C 3 N 4 ), is an emerging photocatalyst in sulfate radical based advanced oxidation processes. The solar-driven electronic excitations in g-C 3 N 4 are capable of peroxo (O-O) bond dissociation in peroxymonosulfate/peroxydisulfate (PMS/PDS) and oxidants to generate reactive free radicals, namely SO 4•− and OH • in addition to O 2 •− radical. The synergistic mechanism of g-C 3 N 4 mediated PMS/ PDS photocatalytic activation, could ensure the generation of OH • radicals to overcome the low reductive potential of g-C 3 N 4 and fastens the degradation reaction rate. This article reviews recent work on heterojunction formation (type-II heterojunction and direct Z-scheme) to achieve the bandgap for extended visible light absorption and improved charge carrier separation for efficient photocatalytic efficiency. Focus is placed on the fundamental mechanistic routes followed for PMS/PDS photocatalytic activation over g-C 3 N 4 -based photocatalysts. A particular emphasis is given to the factors influencing the PMS/PDS photocatalytic activation mechanism and the contribution of SO 4 •− and OH • radicals that are not thoroughly investigated and require further studies. Concluding perspectives on the challenges and opportunities to design highly efficient persulfateactivated g-C 3 N 4 based photocatalysts toward environmental remediation are also intensively highlighted.

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Section: Introductionmentioning

confidence: 99%

Advanced activation of persulfate by polymeric g-C3N4 based photocatalysts for environmental remediation: A review

Hasija

Nguyen

Kumar

et al. 2021

Journal of Hazardous Materials

332

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“…The porous carbon nitride frameworks like C 2 N and C 3 N 4 have been observed to be suitable materials for wastewater treatment. 3,[23][24][25][26] Graphitic carbon nitride based adsorbents are found to be better and cost effective than activated carbon. The Al@C 2 N ML is demonstrated to be suitable as an adsorbent for enrichment and utilization of various volatile organic compounds.…”

Section: Introductionmentioning

confidence: 99%

Binding and optical characteristics of polycyclic aromatic hydrocarbons and their nitroderivatives adsorbed on the C₃N monolayer

Deshpande¹,

Deshpande²,

Hussain

et al. 2022

New J. Chem.

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“…Thus, an increase in the quantity and variety of functional groups on the surface of g-CN could benefit adsorption performance of g-CN via enhanced hydrogen bonding interactions . Finally, hydrophobic interactions have proven crucial during interactions between g-CN and perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA). , Despite all of the possible interactions that could benefit adsorption, pristine g-CN is not widely applied in the adsorption processes, probably due to its small specific surface area (<10 m 2 /g) . Given the importance of specific surface areas in determining the accessibility of active sites, other properties such as the number and nature of active sites are also crucial parameters to consider.…”

Section: Introductionmentioning

confidence: 99%

Na-Doped Graphitic Carbon Nitride for Removal of Aqueous Contaminants via Adsorption and Photodegradation

Yan

Gao

Chen

2021

ACS Appl. Nano Mater.

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Graphitic carbon nitride (g-CN) has gained significant popularity as a visible-light-activated photocatalyst in energy and environmental applications. Most papers are dedicated to improving its photocatalytic performance; however, an investigation of its adsorption performance not only expands its application scope but also provides insight into its surface interactions. Herein, sodium-doped g-CN (Na(x)-CN) is synthesized via one-step pyrolysis of the mixture of melamine and sodium carbonate (Na2CO3). The prepared Na(x)-CN not only demonstrates superior adsorption capacities (maximum adsorption capacity of methylene blue up to 1319 mg/g, which is ∼650 times higher than that of the pristine g-CN) but also overcomes the lack of selectivity and slow adsorption kinetics of commonly used adsorbents. The extraordinary adsorption capacities are mainly attributed to π–π interactions and electrostatic interactions. Moreover, the Na2CO3-assisted synthesis route improved the optical properties and photocarrier separation efficiency, which are beneficial for further removal of contaminants via photodegradation. This work introduces a facile route for mass production of Na-doped g-CN with excellent adsorption capacities and selectivity as well as enhanced photocatalytic performance.

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Adsorption performance of graphitic carbon nitride-based materials: Current state of the art

Cited by 77 publications

References 147 publications

Advanced activation of persulfate by polymeric g-C3N4 based photocatalysts for environmental remediation: A review

Advanced activation of persulfate by polymeric g-C3N4 based photocatalysts for environmental remediation: A review

Binding and optical characteristics of polycyclic aromatic hydrocarbons and their nitroderivatives adsorbed on the C₃N monolayer

Na-Doped Graphitic Carbon Nitride for Removal of Aqueous Contaminants via Adsorption and Photodegradation

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Adsorption performance of graphitic carbon nitride-based materials: Current state of the art

Cited by 77 publications

References 147 publications

Advanced activation of persulfate by polymeric g-C3N4 based photocatalysts for environmental remediation: A review

Advanced activation of persulfate by polymeric g-C3N4 based photocatalysts for environmental remediation: A review

Binding and optical characteristics of polycyclic aromatic hydrocarbons and their nitroderivatives adsorbed on the C3N monolayer

Na-Doped Graphitic Carbon Nitride for Removal of Aqueous Contaminants via Adsorption and Photodegradation

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Product

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Binding and optical characteristics of polycyclic aromatic hydrocarbons and their nitroderivatives adsorbed on the C₃N monolayer