Preparation and characterization of graphitic carbon nitride through pyrolysis of melamine

Li, Xuefei; Zhang, Jian; Shen, Longhai; Ma, Yiming; Lei, Weiwei; Cui, Qiliang; Zou, Guangtian

doi:10.1007/s00339-008-4816-4

Cited by 686 publications

(295 citation statements)

References 39 publications

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“…All samples show stretching modes in the 1200-1700 cm −1 range, which are typical for aromatic C-N heterocycles and originate from the extended C 3 N 4 network. In addition, the characteristic breathing mode of the triazine unit is observed at 803 cm −1 [12,26,28]. The intensity of these peaks decreases with increasing Zn content, suggesting that g-C 3 N 4 contains numerous triazine rings that comprise sp 2 C-N bonds such as N = C-N and C-N = C. However, the graphitic structure of g-C 3 N 4 was partly damaged by Zn doping.…”

Section: Ftir Datamentioning

confidence: 93%

Hydrogen production using zinc-doped carbon nitride catalyst irradiated with visible light

Yue

Iwaï

et al. 2011

Science and Technology of Advanced Materials

320

165

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Recently, graphitic carbon nitride (g-C 3 N 4 ) has been investigated as a photocatalyst for water splitting and organic dye degradation. In this study, we have developed a simple soft-chemical method of doping Zn into g-C 3 N 4 to prepare a metal-containing carbon nitride. The doping was confirmed by x-ray photoelectron spectroscopy, and diffusion reflectance spectra revealed a significant red shift in the absorption edge of Zn/g-C 3 N 4 . This hybrid material shows high photocatalytic activity and good stability for hydrogen evolution from an aqueous methanol solution under visible light irradiation (λ 420 nm). The hydrogen evolution rate was more than 10 times higher for a 10%-Zn/g-C 3 N 4 sample (59.5 µmol h −1 ) than for pure g-C 3 N 4 . The maximum quantum yield was 3.2% at 420 nm.

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Section: Ftir Datamentioning

confidence: 93%

Hydrogen production using zinc-doped carbon nitride catalyst irradiated with visible light

Yue

Iwaï

et al. 2011

Science and Technology of Advanced Materials

320

165

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“…All signals of C, N, Ag, P, and O were detected in the Ag3PO4/g-C3N4 composite, which is consistent with the XRD and FTIR results. The typical high-resolution XPS spectra of C 1s, Ag 3d, and P 2d in the composite are shown in Figure 4b-d. C 1s has two peaks at 284.6 and 287.4 eV that are separately attributed to the adventitious carbon and the sp 2 -hybridized C of N-C=N in g-C3N4 [41,42]. The Ag 3d5/2 and 3d3/2 of Ag3PO4 were Surface chemical states of the Ag3PO4/g-C3N4 composite were studied by XPS.…”

Section: Structure and Composition Of Ag3po4/g-c3n4 Photocatalystsmentioning

confidence: 99%

Synthesis of Ag3PO4/G-C3N4 Composite with Enhanced Photocatalytic Performance for the Photodegradation of Diclofenac under Visible Light Irradiation

et al. 2018

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Abstract:A new visible-light-driven heterojunction Ag 3 PO 4 /g-C 3 N 4 was prepared by a simple deposition-precipitation method for the degradation analysis of diclofenac (DCF), a model drug component, under visible-light irradiation. The heterojunction photocatalysts were characterized by a suite of tools. The results revealed that the introduction of Ag 3 PO 4 on the surface of g-C 3 N 4 greatly promoted its stability and light absorption performance. In addition, the effects of the heterojunction mixing ratios were studied, when the molar ratio of Ag 3 PO 4 to g-C 3 N 4 in the composite was 30%, the as-prepared photocatalyst Ag 3 PO 4 /g-C 3 N 4 (30%) possessed the best photocatalytic activity toward the photodegradation of DCF, and the optimal photocatalyst showed a DCF degradation rate of 0.453 min −1 , which was almost 34.8 and 6.4 times higher than those of pure g-C 3 N 4 (0.013 min −1 ) and Ag 3 PO 4 (0.071 min −1 ) under visible light irradiation (λ ≥ 400 nm). The trapping experimental results showed that h + , ·OH, and ·O 2 − were the main reactive oxygen species during the photocatalytic reaction. The improved performance of the composites was induced by the high charge separation efficiency of the photogeneration electron-hole pairs as well as the surface plasmon resonance (SPR) endowed in the Ag 0 nanoparticles, and ultimately enhanced the DCF photodegradation.

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“…Namely, the relative content of oxygen-containing hydrophilic groups decreased, which indicated a better hydrophobicity for Carbon-800 than Carbon-600. Deconvolution of the N 1 s spectra mainly yield three peaks, which could be identified as C N C (sp 2 hybridization form) (∼398.3 eV) [37], C N C (other hybridization forms) (∼400.1 eV) [35,38], and C N + H C (∼401.4 eV) [35,38]. The binding forms of N atom presented mainly as C N C forms (sp 2 and other hybridization forms), and showed no clear change in the relative content among all the N-containing groups with the increase of carbonization temperature from 600 to 800 • C (Table S1).…”

Section: Xps Characterization Resultsmentioning

confidence: 99%

From spent Mg/Al layered double hydroxide to porous carbon materials

Laipan

Chen

Zhu

et al. 2015

Journal of Hazardous Materials

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Preparation and characterization of graphitic carbon nitride through pyrolysis of melamine

Cited by 686 publications

References 39 publications

Hydrogen production using zinc-doped carbon nitride catalyst irradiated with visible light

Hydrogen production using zinc-doped carbon nitride catalyst irradiated with visible light

Synthesis of Ag3PO4/G-C3N4 Composite with Enhanced Photocatalytic Performance for the Photodegradation of Diclofenac under Visible Light Irradiation

From spent Mg/Al layered double hydroxide to porous carbon materials

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