Urea-induced supramolecular self-assembly strategy to synthesize wrinkled porous carbon nitride nanosheets for highly-efficient visible-light photocatalytic degradation

Cui, Xianbao; Bi, Jingtao; Ji, Xin; Li, Xin; Wang, Na; Huang, Yanhong; Huang, Xin; Hao, Hongxun

doi:10.1039/d1ra03524j

Cited by 24 publications

(5 citation statements)

References 62 publications

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“…[19][20][21][22] The supramolecular approach enables good control over the morphology of CN and over its optical, electronic, and catalytic properties. [23][24][25][26] The formation, uniformity, and reproducibility of the self-assembly rely strongly on the monomers having adequate solubility in a given solvent: the solubility of the monomers will direct their interactions, thus allowing a molecular 'blueprint' to evolve into the morphology on the macroscale. To date, most studies have been done in water, where monomers have limited solubility.…”

Section: New Conceptsmentioning

confidence: 99%

Developing extended visible light responsive polymeric carbon nitrides for photocatalytic and photoelectrocatalytic applications

et al. 2023

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Section: New Conceptsmentioning

confidence: 99%

Developing extended visible light responsive polymeric carbon nitrides for photocatalytic and photoelectrocatalytic applications

et al. 2023

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“…CCN‐30HO presented a smaller Nyquist graph semicircle than CCN, indicating that CCN‐30HO had lower interface resistance and higher charge transfer efficiency [48] . Therefore, CCN‐30HO separated photogenerated electron‐hole pairs more efficiently and transferred them to remove contaminants adsorbed to the active site rapidly [49] …”

Section: Resultsmentioning

confidence: 99%

“…[48] Therefore, CCN-30HO separated photogenerated electron-hole pairs more efficiently and transferred them to remove contaminants adsorbed to the active site rapidly. [49] The ability of CCN and CCN-30HO to be visible light-driven was further investigated by measuring the transient photocurrent response. As shown in Figure 10(b), CCN-30HO showed an enhanced photocurrent response compared to CCN, about 1.48 times higher than CCN, indicating that CCN-30HO had a strong potential for visible light-driven.…”

Section: Photochemical Testmentioning

confidence: 99%

Supramolecular self‐assembly of polymeric carbon nitride with high photocatalytic activity

Shen

et al. 2023

ChemistrySelect

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Melamine and cyanic acid were self-assembled into the supramolecular precursor through hydrogen bonding, and the precursor was treated by adding different amounts of H 2 O 2 . A series of polymeric carbon nitrides by H 2 O 2 were prepared by the high temperature calcination method, and these samples were characterized by various modern analysis methods. Taking Rhodamine B(RhB) as the pollutant, the effect of H 2 O 2 addition on the photocatalytic performance of polymeric carbon nitride was investigated. The results show that the addition of H 2 O 2 affected the structural composition of polymeric carbon nitride and enhanced its photocatalytic performance. The photocatalytic degradation of RhB by the polymeric carbon nitride with 30 mL H 2 O 2 was the best, and the degradation time of RhB to 90 % by this polymeric carbon nitride was at least 10 min earlier than that of the sample without H 2 O 2 . The degradation of RhB by the polymeric carbon nitride with 30 mL H 2 O 2 was 99.7 % within 30 min. This polymeric carbon nitride had good stability, and the degradation of RhB decreased slightly after cyclic experiment but the chemical groups remained unchanged.

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“…In this process are g-C 3 N 4 and similar chemicals produced by direct pyrolysis of nitrogen-rich precursors. [382,384,385] The optimization process involves either heating the precursor chemicals alone or with other compounds. To achieve thorough mixing, the reactants are subjected to ball milling or solventmediated mixing for extended periods prior to final thermal condensation.…”

Section: Synthetic Methods For G-c 3 Nmentioning

confidence: 99%

A Comprehensive Review on Graphitic Carbon Nitride for Carbon Dioxide Photoreduction

2022

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Inspired by natural photosynthesis, harnessing the wide range of natural solar energy and utilizing appropriate semiconductor‐based catalysts to convert carbon dioxide into beneficial energy species, for example, CO, CH4, HCOOH, and CH3COH have been shown to be a sustainable and more environmentally friendly approach. Graphitic carbon nitride (g‐C3N4) has been regarded as a highly effective photocatalyst for the CO2 reduction reaction, owing to its cost‐effectiveness, high thermal and chemical stability, visible light absorption capability, and low toxicity. However, weaker electrical conductivity, fast recombination rate, smaller visible light absorption window, and reduced surface area make this catalytic material unsuitable for commercial photocatalytic applications. Therefore, certain procedures, including elemental doping, structural modulation, functional group adjustment of g‐C3N4, the addition of metal complex motif, and others, may be used to improve its photocatalytic activity towards effective CO2 reduction. This review has investigated the scientific community's perspectives on synthetic pathways and material optimization approaches used to increase the selectivity and efficiency of the g‐C3N4‐based hybrid structures, as well as their benefits and drawbacks on photocatalytic CO2 reduction. Finally, the review concludes a comparative discussion and presents a promising picture of the future scope of the improvements.

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Urea-induced supramolecular self-assembly strategy to synthesize wrinkled porous carbon nitride nanosheets for highly-efficient visible-light photocatalytic degradation

Abstract: Wrinkled porous g-C3N4 nanosheets were fabricated by supramolecular MCA self-templates. Due to the reactant and porogen agent urea, g-C3N4 could be modulated with efficient electron–hole pairs and thus superior photocatalytic degradation performance.

Cited by 24 publications

References 62 publications

Developing extended visible light responsive polymeric carbon nitrides for photocatalytic and photoelectrocatalytic applications

Developing extended visible light responsive polymeric carbon nitrides for photocatalytic and photoelectrocatalytic applications

Supramolecular self‐assembly of polymeric carbon nitride with high photocatalytic activity

A Comprehensive Review on Graphitic Carbon Nitride for Carbon Dioxide Photoreduction

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