On P-doping of graphitic carbon nitride with hexachlorotriphosphazene as a source of phosphorus

Škuta, Radim; Matějka, Vlastimil; Foniok, Kryštof; Smýkalová, Aneta; Cvejn, Daniel; Gabor, Roman; Kormunda, Martin; Smetana, Bedřich; Novák, Vlastimil; Praus, Petr

doi:10.1016/j.apsusc.2021.149490

Cited by 23 publications

(13 citation statements)

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“…A great deal of the HCl influence is due pre-organization of the precursors into supramolecular assemblies in the reaction mixtures resulting in the final morphology, specific surface area, and catalytic properties 51 , 52 . While active chlorine usually enters the reactions of precursors and enhances the condensation processes, often ending up in the structure of resulting materials 53 , anionic chloride can intercalate the final CN structure 54 .…”

Section: Resultsmentioning

confidence: 99%

The role of guanidine hydrochloride in graphitic carbon nitride synthesis

Smýkalová

Foniok

Cvejn

et al. 2021

Sci Rep

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Graphitic carbon nitride (CN) was synthesized from guanidine hydrochloride (G), melamine (M) and dicyandiamide (DCDA). The CN materials synthetized from the pure precursors and their mixtures were characterized by common methods, including thermal analysis, and their photocatalytic activities were tested by the degradation of selected organic pollutants, such as amoxicillin, phenol, Rhodamine B (RhB). Remarkable changes in their texture properties in terms of particle sizes, specific surface areas (SSA) and consequently their photocatalytic activity were explained by the role of guanidine hydrochloride in their synthesis. The SSA increased due to the release of NH3 and HCl and its complex reactions with melamine and DCDA forming structure imperfections and disruptions. The photocatalytic activity of the CN materials was found to be dependent on their SSA.

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Section: Resultsmentioning

confidence: 99%

The role of guanidine hydrochloride in graphitic carbon nitride synthesis

Smýkalová

Foniok

Cvejn

et al. 2021

Sci Rep

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“…Although the post-loading methods successfully synthesized series of metal/heteroatom-doped carbon catalysts with controlled structures and compositions, there is urgently desired an efficient and facile one-step synthesis method, which can mix the heteroatom, carbon, and metal precursor, through an in situ pyrolysis method to regulate metal/heteroatom-doped carbon catalysts. − Recently, Li et al prepared N-doped carbon nanosheets by direct pyrolysis of glucosamine hydrochloride (GAH) and melamine. As illustrated in Figure , a novel nickel-loaded graphitic carbon nanotubes (NiO x @GCNTs) catalyst was synthesized by in situ preparation, which mainly includes (1) low-temperature polymerization; melamine and GAH (nitrogen sources) were converted to graphitic carbonitrides (g-C 3 N 4 ).…”

Section: Synthetic Approaches Of Metal/heteroatom-doped Carbon Catalystsmentioning

confidence: 99%

Atom Doping Engineering of Metal/Carbon Catalysts for Biomass Hydrodeoxygenation

Yan

Wang

2021

ACS Sustainable Chem. Eng.

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Developing novel and efficient hydrodeoxygenation (HDO) catalysts plays a crucial role on biomass utilization from green and sustainable points of view. In the past, carbon materials were recognized as ideal catalyst carriers due to their fascinating properties including tunable surface structure and excellent chemical and thermal stability. Recently, the newly emerging metal/heteroatom-doped carbon catalysts have arguably experienced tremendous advances and gained widespread interest in view of the fact that heteroatom doping can further tailor the properties of carbon and introduce various metal–carrier interactions, resulting in superior HDO catalyst performance compared to pristine metal/carbon catalysts. In this perspective, we focus on the synthesis strategies for metal/heteroatom-doped carbon catalysts, the property effects of heteroatom doping, and catalytic applications through these fascinating catalysts in biomass HDO. Notably, we try to elucidate the doping effects through a summary of the mechanisms, thereby providing guidance for the rational design of advanced HDO catalysts for biomass catalysis.

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“…For example, a supramolecular complex formed by melamine and cyanuric acid involved hydrogen bonding, which is due to its specificity, reversibility, and directionality, is regarded as a potent tool for regulating molecular self-assembly. Furthermore, to introduce phosphorus (P) into the C–N lattice, various phosphorus sources have been utilized, such as diammonium hydrogen phosphate, 19 2-aminoethylphosphonic acid, 20 hexachlorocyclotriphosphazene, 21 ammonium hexafluorophosphate, 22 phosphorous acid, etc. 23 Subsequently, phosphoric acid has been incorporated in the pre-assembly of melamine and cyanuric acid molecules, the P-atom undergo interstitial or substitutional doping and preferentially replace substitutional corner-carbon or bay-carbon sites.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Thus, peculiar attention has been focused on phosphorus-doped graphitic carbon nitride (P-g-C 3 N 4 ) for potential employment as an immobilization matrix for the fabrication of biosensors. 21,27,28 In the present work, we have synthesized 3D P-g-C 3 N 4 via self-assembly of a melamine-cyanuric acid complex and phosphoric acid upon pyrolysis treatment. As an immobilization matrix, P-g-C 3 N 4 exhibits distinct features such as high packing density due to its uniformly dispersed mesopores on microstructured sheets, allows easy electrolyte capillary action via its pores, which results in a large electrolyte/electrode contact surface, ensures short metal-ion-diffusion pathways within the pores and pore-sized wall structures, and provides a short and multifaceted route for fast electron transport.…”

Section: Introductionmentioning

confidence: 99%

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