Synthesis of crumpled nanosheets of polymeric carbon nitride from melamine cyanurate

Journal Article · Wed May 01 04:00:00 EDT 2013 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2013.02.016· OSTI ID:22306280

Martín-Ramos, Pablo ^[1]; Sánchez-Arévalo, F. M.; Huerta, L.; Bizarro, M. ^[2]; Navas-Gracia, Luis M.; Martín-Gil, Jesús ^[1]

---

1. Laboratorio de Materiales Avanzados (Advanced Materials Laboratory) ETSIIAA, Universidad de Valladolid, Avenida de Madrid 44, 34004 Palencia (Spain)
2. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, Cd. Universitaria, Mexico, D.F. 04510 (Mexico)

Polymeric carbon nitride was synthesized by pyrolysis in nitrogen flux at different temperatures between 450 and 700 °C using melamine cyanurate as a reagent and sulfuric acid as a catalyst. The obtained carbon nitride consisted of curled nanosheets (650 °C), and globular particles (700 °C) with formula C₆N₇NHNH₂. The reaction yield of the catalyzed reaction was around the 15% for the sample treated at 700 °C, in a tapped crucible. The optical band gap of the polymer obtained at 700 °C is around 2.9 eV. The gap to the Fermi level is around 2 eV, considerably above the half of the band gap (due to electrons trapped in the gap), indicating that the polymer is probably a n-type semiconductor. - Graphical abstract: Transition from amorphous to crystalline carbon nitride, which is composed of globular particles and is a n-type wide band semiconductor. Highlights: • We synthetized carbon nitride using melamine cyanurate. • The reaction of carbon nitride formation is catalyzed by sulfuric acid. • The carbon nitride obtained at 700 °C is composed of globular particles. • The material obtained at 700 °C is a n-type semiconductor.

• OSTI ID: 22306280
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. 201; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON NITRIDES
CATALYSTS
ELECTRONS
FERMI LEVEL
GRAPHENE
MELAMINE
NANOSTRUCTURES
NITROGEN
PARTICLES
POLYMERS
PYROLYSIS
SEMICONDUCTOR MATERIALS
SULFURIC ACID
SYNTHESIS