Synthesis, properties, and application of polymeric carbon nitrides

Akhmedov, V. M.; Melnikova, N. E.; Akhmedov, I. D.

doi:10.1007/s11172-017-1810-z

Cited by 12 publications

(7 citation statements)

References 224 publications

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“…Bulk g-C 3 N 4 was obtained by stepwise thermal condensation of melamine in a corundum pot at 350-550 0 C [14].…”

Section: Experimental Partmentioning

confidence: 99%

“…In order to solve this problem, it was interesting to search the possibility of using graphite-type polymeric carbon nitride (g-C 3 N 4 ) as solid organic catalyst for the conversion of carbohydrates. g-C 3 N 4 possesses a high chemical and thermal stability, semiconducting properties and has been investigated intensively over the last decade as a multifunctional organic catalyst in many reactions [14]. However, low activity, a small specific surface area (˂10 m 2 /g) and fast recombination of the photogenerated electron-hole pairs substantially limit the possibility of using g-C 3 N 4 both in traditional chemical and in photo-and electrocatalysis.…”

Section: Introductionmentioning

confidence: 99%

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Conversion of Carbohidrates on Modified Graphite-Like Carbon Nitrides

Ahmedov¹,

Melnikova²,

Nurullayev³

et al. 2018

AChJ

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The new efficient heterogeneous catalysts on the basis of modified polymer carbon nitrides are developed for the conversion of hexose carbohydrates to 5-hydroxymethylfurfural (HMF)the most important basic compounds for the modern chemical industry. Carbon nitride was modified by interaction with HCl, PCl 5 and CrCl 3 . The structure and composition of the modified carbon nitrides have been studied by IR spectroscopy and X-ray diffraction analysis. Established, that propounded catalysts provide the selective conversion of hexose carbohydrates into 5-hydroxymethylfurfural with a minimum yield of humic compounds under mild conditions.

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“…Bulk g-C 3 N 4 was obtained by stepwise thermal condensation of melamine in a corundum pot at 350-550 0 C [14].…”

Section: Experimental Partmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Conversion of Carbohidrates on Modified Graphite-Like Carbon Nitrides

Ahmedov¹,

Melnikova²,

Nurullayev³

et al. 2018

AChJ

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show abstract

“…The two-dimensional g-C 3 N 4 material has a layered structure is characterized by exceptionally high thermal (up to 600 0 С in air) and chemical stability in acids, bases, and organic solvents. It possesses basic and semiconductor properties, which give rise to its unique catalytic action: without participation of any metal, g-C 3 N 4 was used in both chemical and photochemical heterogeneous catalysis to activate benzene, carbon dioxide, and hydrogen molecules, to catalyze water splitting, and in some other processes [7][8][9][10]. The g-C 3 N 4 surface is rich in nitrogen capable of forming coordination bonds.…”

Section: Introductionmentioning

confidence: 99%

Platinum – Mesoporous Carbon Nitride Nanocomposites: Synthesis, Characterization and Catalytic Performance in Phenylacetylene Hydrogenation

Akhmedov¹,

Melnikova²,

Nurullayev³

et al. 2023

AChJ

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The platinum nanocomposites were synthesized by chemical reduction of H2PtCl6·6H2O in situ with a methanol—water mixture using mesoporous graphitic carbon nitride as a stabilizing matrix and a catalyst support. The textural, morphological, and optical properties of the obtained platinum – mesoporous carbon nitride composites (Pt/mpg-C3N4) were studied. Pt/mpg-C3N4 has been developed as an effective heterogeneous catalyst for the gas and liquid phase hydrogenation of phenylacetylene. An efficient and versatile approach to the modification of platinum with various organic solvents and ligands for the selective hydrogenation of phenylacetylene to styrene in a flow gas-phase process is pre-sented. The addition of pyridine, piperidine, or morpholine to the starting solution of phenylacetylene in hexane provides 95–100% conversion and 90–92% selectivity to styrene. A sharp increase in the selectivity to styrene without substantial changes in conversion is also observed when THF, ethanol, triethylamine, dioxane, or chloroform are used as diluents. The obtained Pt/mpg-C3N4 composites also demonstrated considerable catalytic activity in the selective hydrogenation of phenylacetylene to styrene at low temperatures in the liquid phase

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“…Graphitic carbon nitride (g-C 3 N 4 ) is one of the most promising among two-dimensional carbon-based nanomaterials [20][21][22]. The interaction of functional groups such as -NH-, NH 2 -, N-C=N and C=C on the surface creates basic and π-donor-acceptor properties in carbon nitride, which make it a unique non-metallic or-ganic catalyst in electrophilic and nucleophilic type reactions.…”

Section: Introductionmentioning

confidence: 99%

EFFICIENCY OF GRAPHITE CARBON NITRIDE IN THE SORPTION OF IRON (Fe2+) AND COPPER (Cu2+) IONS FROM AQUEOUS SOLUTION

Guliyeva,

Abbasov,

Agayeva

et al. 2023

AChJ

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In the present work, freshly prepared from urea powders of graphite carbon nitride were subjected to ultrasonic exfoliation and were used to evaluate their adsorption efficiency for iron and copper ions from an aqueous solution. It has been established that the sorption efficiency is significantly affected by the pH of the medium, the contact time, and the initial concentration of metal ions. It is shown that the Fe2+ sorption isotherm by carbon nitride can be well modeled by both the Langmuir and Freundlich adsorption isotherms based on correlation coefficients

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Synthesis, properties, and application of polymeric carbon nitrides

Cited by 12 publications

References 224 publications

Conversion of Carbohidrates on Modified Graphite-Like Carbon Nitrides

Conversion of Carbohidrates on Modified Graphite-Like Carbon Nitrides

Platinum – Mesoporous Carbon Nitride Nanocomposites: Synthesis, Characterization and Catalytic Performance in Phenylacetylene Hydrogenation

EFFICIENCY OF GRAPHITE CARBON NITRIDE IN THE SORPTION OF IRON (Fe2+) AND COPPER (Cu2+) IONS FROM AQUEOUS SOLUTION

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