Synthesis of graphitic carbon nitride under low ammonia partial pressure

Inoki, Hiroya; Seo, Goichiro; Kanai, Kaname

doi:10.1016/j.apsusc.2020.147569

Cited by 29 publications

(27 citation statements)

References 40 publications

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“…By our constructions, there are 20 phases reported here; 11 phases, to the best of our knowledge, have been reported before 4 , 20 , 21 , 24 – 29 , 29 , 45 – 52 , and 9 phases which are HEP–TRI, HEP–HEP, HEC-C, HEC–HEP, and BEN-X (X = C, TRI, HEP, HEC, and BEN) are newly derived by this study (see Fig. S1 in Supplementary Information).…”

Section: Resultssupporting

confidence: 59%

Presence and absence of intrinsic magnetism in graphitic carbon nitrides designed through C–N–H building blocks

Pakornchote

Ektarawong

Sukserm

et al. 2022

Sci Rep

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We use the first principle calculation to investigate the intrinsic magnetism of graphitic carbon nitrides (GCNs). By preserving three-fold symmetry, the GCN building blocks have been built out of different combinations between 6 components which are C atom, N atom, s-triazine, heptazine, heptazine with C atom at the center, and benzimidazole-like component. That results in 20 phases where 11 phases have been previously reported, and 9 phases are newly derived. The partial density of states and charge density have been analyzed through 20 phases to understand the origin of the presence and absence of intrinsic magnetism in GCNs. The intrinsic magnetism will be present not only because the GCNs comprising of radical components but also the $$\pi$$ π -conjugated states are not the valence maximum to break the delocalization of unpaired electrons. The building blocks are also employed to study alloys between g-$$\hbox {C}_3\hbox {N}_4$$ C 3 N 4 and g-$$\hbox {C}_4\hbox {N}_3$$ C 4 N 3 . The magnetization of the alloys has been found to be linearly dependent on a number of C atoms in the unit cell and some magnetic alloys are energetically favorable. Moreover, the intrinsic magnetism in GCNs can be promoted or demoted by passivating with a H atom depending on the passivated positions.

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Section: Resultssupporting

confidence: 59%

Presence and absence of intrinsic magnetism in graphitic carbon nitrides designed through C–N–H building blocks

Pakornchote

Ektarawong

Sukserm

et al. 2022

Sci Rep

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“…Graphitic carbon nitride is a two-dimensional material composed only of carbon, nitrogen, and hydrogen. As typical examples, g-C 3 N 4 and melon are a two-dimensional and quasi-one-dimensional polymer with a heptazine skeleton, respectively 8 , 9 , and poly(triazine imide) is a two-dimensional polymer with a triazine skeleton 10 . Poly(heptazine imide) (hereafter referred to as PHI) exhibits photocatalysis and was first reported by Savateev et al 11 (shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of charge accumulation of poly(heptazine imide) gel

Seo

Saito

Nakamichi

et al. 2021

Sci Rep

Self Cite

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Photo-stimuli response in materials is a fascinating feature with many potential applications. A photoresponsive gel of poly(heptazine imide), PHI, termed PHIG, exhibits photochromism, photoconductivity, and photo-induced charge accumulation, and is generated using ionic liquids and PHI. Although there are several examples of ionic liquid gels that exhibit photochromism and photoconductivity, this is the first report of an ionic liquid gel that exhibits both these properties as well as charge accumulation. We conducted experimental and theoretical investigations to understand the mechanism of the photostimulus response of PHIG, especially charge accumulation. The proposed model explains both the mechanism of charge accumulation and dark photocatalysis by PHI and provides new concepts in the field of photofunctional materials.

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“…The colour of g-C 3 N 4 ranges from light yellow to brownish [ 29 , 30 ]. The photographs of the powdered form of melon and g-C 3 N 4 obtained from melamine are presented in Figure 5 d, which also shows the corresponding UV–vis absorption spectra.…”

Section: Properties Of G-c 3 Nmentioning

confidence: 99%

“…( d ) UV-vis spectra of the g-C 3 N 4 and melon with the corresponding photographs of the powdery samples used for this measurement. Reprinted with permission from [ 29 ], Copyright 2020, Elsevier.…”

Section: Figurementioning

confidence: 99%

Graphitic Carbon Nitride as a New Sustainable Photocatalyst for Textile Functionalization

2021

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As a promising organic semiconducting material, polymeric graphitic carbon nitride (g-C3N4) has attracted much attention due to its excellent optical and photoelectrochemical properties, thermal stability, chemical inertness, nontoxicity, abundance, and low cost. Its advantageous visible light-induced photocatalytic activity has already been beneficially used in the fields of environmental remediation, biological applications, healthcare, energy conversion and storage, and fuel production. Despite the recognized potential of g-C3N4, there is still a knowledge gap in the application of g-C3N4 in the field of textiles, with no published reviews on the g-C3N4- functionalization of textile materials. Therefore, this review article aims to provide a critical overview of recent advances in the surface and bulk modification of textile fibres by g-C3N4 and its composites to tailor photocatalytic self-cleaning, antibacterial, and flame retardant properties as well as to create a textile catalytic platform for water disinfection, the removal of various organic pollutants from water, and selective organic transformations. This paper highlights the possibilities of producing g-C3N4-functionalized textile substrates and suggests some future prospects for this research area.

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Synthesis of graphitic carbon nitride under low ammonia partial pressure

Cited by 29 publications

References 40 publications

Presence and absence of intrinsic magnetism in graphitic carbon nitrides designed through C–N–H building blocks

Presence and absence of intrinsic magnetism in graphitic carbon nitrides designed through C–N–H building blocks

Mechanism of charge accumulation of poly(heptazine imide) gel

Graphitic Carbon Nitride as a New Sustainable Photocatalyst for Textile Functionalization

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