title: Morphology control and photocatalysis enhancement by the one-pot synthesis of carbon nitride from preorganized hydrogen-bonded supramolecular precursors.
abstract: We present an efficient synthesis of a modified carbon nitride photocatalyst by using supramolecular complexes of cyanuric acid, melamine, and 2,4-diamino-6-phenyl-1,3,5-triazine as precursors. We combined a self-templating approach for morphology control with the modification of photophysical properties by altering the chemical structure of the material. The resulting carbon nitrides exhibit high surface areas, defined morphologies, and a strong enhancement of light absorption in the visible-light region. A detailed analysis shows that the ratio changes of the three raw monomers resulted in different carbon nitride morphologies, absorption, and emission properties, along with the incorporation of different numbers of phenyl groups in the resulting carbon nitride structures. The modified carbon nitrides exhibit superior activity in the photodegradation of rhodamine B, up to 16 times that of bulk carbon nitride. The pyrolysis of rationally chosen supramolecular hydrogen-bonded precursors constitutes a synthetic pathway for the simple one-pot preparation of efficient, metal-free carbon nitride photocatalysts.
authors.affiliation: Department of Applied Chemistry, Graduate Course of Urban Environmental Sciences, Tokyo Metropolitan University , Minami-ohsawa 1-1, Hachiohji, Tokyo 192-0397, Japan.
authors.forename: Yohei
authors.initials: Y
authors.lastname: Ishida
authors.forename: Laurent
authors.initials: L
authors.lastname: Chabanne
authors.forename: Markus
authors.initials: M
authors.lastname: Antonietti
authors.forename: Menny
authors.initials: M
authors.lastname: Shalom