2023 Fiscal Year Annual Research Report

Graphitic Carbon Nitride-based Thin Films as New Functional Materials

Research Project

Project/Area Number	22KJ0959
Allocation Type	Multi-year Fund
Research Institution	The University of Tokyo
Principal Investigator	呉念念東京大学, 工学系研究科, 特別研究員(DC2)
Project Period (FY)	2023-03-08 – 2024-03-31
Keywords	graphitic carbon nitride / doping / photocurrent
Outline of Annual Research Achievements	We developed photoelectrochemical water splitting using as photoanode a thin film of graphitic carbon nitride containing graphitic carbon domains, prepared by vapor deposition of melamine with glucose. The graphitic carbon domain, whose content is modulable over a wide range, enhances the visible light absorption, electrical conductivity, and electron-hole separation. And optimizing it for visible light (420 nm) water splitting. the observation was the residence of radicals in the gCN films containing gC domains even in the dark at ambient temperatures, which possibly facilitate the evolution of oxygen from the photoanode surface. These properties position the gCN-co-gC film as a high-performance PEC system, achieving high photocurrent.

(2 results)