Platinum nanocomposites with mesoporous carbon nitride: synthesis and evaluation of the hydrogenation activity

Melnikova, N. E.; Babayeva, A. Z.; Nurullayev, G.G.; Akhmedov, V. M.; Тагиев, Д. Б.

doi:10.1007/s11172-021-3136-0

Cited by 4 publications

(1 citation statement)

References 41 publications

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“…The mpg-C 3 N 4 sample was powdered and used for the synthesis of composites with Pt. Reduction of H 2 PtCl 6 •6H 2 O for the synthesis of Pt/mpg-C 3 N 4 nanocomposites was carried out by methanol in situ in the presence of mpg-C 3 N 4 [29] In order to prepare the catalyst samples with the Pt content 0.5, 1, and 3 wt.%, the calculated amounts of H 2 PtCl 6 •6H 2 O and mpg-C 3 N 4 were added to a methanol-water (90:10, vol.%) mixture (50 mL), and the resulting mixture was ultra-sonicated for 30 min. The obtained mixture was transferred to a flask and heated to 60-65 0 C with a reflux condenser with permanent stirring for 1 h. The mixture was filtered on a water-jet pump at ~20 0 C. The formed solid residue was dried in a vacuum drying box at ~50 0 C and stored under an inert atmosphere.…”

Section: Synthesis Of Pt/mpg-c 3 N 4 Compositesmentioning

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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Section: Synthesis Of Pt/mpg-c 3 N 4 Compositesmentioning

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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Graphitic Carbon Nitride as a Promising Visible‐Light‐Activated Support Boosting Platinum Nanoparticle Activity in Ethanol Electrooxidation

Brugia,

Benedet,

Rizzi

et al. 2024

ChemSusChem

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In the present work, exfoliated graphitic carbon nitride (g‐CN) is immobilized on carbon paper substrates by a simple electrophoretic route, and subsequently decorated with ultra‐low amounts (≈μg/cm2) of Pt nanoparticles (NPs) by cold plasma sputtering. Optimization of preparative conditions allowed a fine tuning of Pt NPs size, loading and distribution and thus a controlled tailoring of g‐CN/Pt interfacial interactions. Modulation of such features yielded g‐CN‐Pt‐based anode materials with appealing activity and stability towards the ethanol oxidation reaction (EOR) in alkaline aqueous solutions, as revealed by electrochemical tests both in the dark and under irradiation. The present results provide new insights on the design of nano‐engineered heterocomposites featuring improved performances thanks to Pt coupling with g‐CN, a low‐cost and environmentally friendly visible light‐active semiconductor. Overall, this work might open attractive avenues for the generation of green hydrogen via aqueous ethanol electrolysis and the photo‐promoted alcohol electrooxidation in fuel cells.

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Tuning selectivity in the gas phase hydrogenation of phenylacetylene over the platinum—mesoporous carbon nitride composites using organic modifiers

2022

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Platinum nanocomposites with mesoporous carbon nitride: synthesis and evaluation of the hydrogenation activity

Cited by 4 publications

References 41 publications

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

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

Graphitic Carbon Nitride as a Promising Visible‐Light‐Activated Support Boosting Platinum Nanoparticle Activity in Ethanol Electrooxidation

Tuning selectivity in the gas phase hydrogenation of phenylacetylene over the platinum—mesoporous carbon nitride composites using organic modifiers

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