Photocatalytic Activity of Heterostructures Based on Graphite-Like Carbon Nitride Modified with Few-Layer Black Phosphorus and Cobalt Phosphide in the Hydrogen Evolution Reaction

• Published in: Kinetics and catalysis Vol. 65; no. 5; pp. 579 - 585
• Main Authors: Aidar M. Kuchkaev, Zhurenok, A. V., Kuchkaev, Airat M., Sukhov, A. V., Kashansky, V. S., Nikitin, M. M., Litvintseva, K. A., Cherepanova, S. V., Gerasimov, E. Yu, Kozlova, E. A., Sinyashin, O. G., Yakhvarov, D. G.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.10.2024; Springer Nature B.V
• Subjects: Aqueous solutions; Carbon nitride; Catalysis; Catalytic activity; Chemistry; Chemistry and Materials Science; Environmental Protection; Heterostructures; Hydrogen evolution reactions; Light irradiation; Phosphides; Phosphorus; Photocatalysis; Photocatalysis for Energy; Photocatalysts; Photoelectrons; Physical Chemistry; Sustainable Development; Triethanolamine; X ray photoelectron spectroscopy; cobalt phosphides; hydrogen evolution; black phosphorus; carbon nitride; photocatalysis
• ISSN: 0023-1584; 1608-3210
• DOI: 10.1134/S0023158424601979

The photocatalytic activity of 2D/2D/0D heterostructures based on few-layer black phosphorus (FLBP) g-C 3 N 4 /FLBP/Co 2 P in the reaction of photocatalytic hydrogen formation from an aqueous solution of triethanolamine under under visible light irradiation (400 nm) was studied for the first time. An original method for the preparation of the g‑C 3 N 4 /FLBP/Co 2 P composite photocatalyst is proposed, which consists of the solvothermal synthesis of cobalt phosphide Co 2 P nanoparticles, their immobilization on the surface of FLBP, and subsequent mixing of the FLBP/Co 2 P heterostructure with g‑C 3 N 4 . The synthesized photocatalysts were characterized by physicochemical analytical methods (X-ray diffraction, X-ray photoelectron spectroscopy, high-resolution transmission microscopy, energy-dispersive X-ray spectroscopy). The hydrogen evolution rate in the presence of the g‑C 3 N 4 /FLBP/Co 2 P heterostructure was 0.09 mmol h –1 , which is 25 times higher than the same characteristic for the unmodified g‑C 3 N 4 sample. The obtained numerical values of the photocatalytic activity are at the level of the literature values.