Publication detail

Next-generation photocatalytic system: Ga2O3-modified Ga Nanoislands on graphene for H2 production

BARTOŠÍK, M. MACH, J., EDELMANNOVÁ M. F., KOČÍ, K.

Original Title

Next-generation photocatalytic system: Ga2O3-modified Ga Nanoislands on graphene for H2 production

Type

journal article in Web of Science

Language

English

Original Abstract

Study investigates Ga2O3/Ga on Graphene/SiO2/Si, prepared via temperature-controlled growth of Ga, for photocatalytic hydrogen generation, marking the first exploration of this system for such purpose. Thin surface ultra-wide band gap Ga2O3 layer effectively photoemits electron-hole pairs under UVC and the metallic Ga cores enhance electric field separating charge carriers by formation of localized surface plasmon (LSP) resonances. These effects increase hydrogen yields. Computational analysis of LSP-induced electric field enhancement quantitatively supports proposed fundamental mechanism underlying sample's photoactivity. The most active photocatalyst (Ga-M) with medium-size Ga particles (radius 14 nm) exhibited ten thousand times higher activity per gram than commercial TiO2.

Keywords

Photocatalysis; Hydrogen generation; Ga material; Water splitting

Authors

BARTOŠÍK, M.; MACH, J., EDELMANNOVÁ M. F., KOČÍ, K.

Released

24. 5. 2024

Publisher

ELSEVIER

Location

AMSTERDAM

ISBN

2950-6492

Periodical

Applied Catalysis O: Open

Year of study

191

Number

206944

State

Kingdom of the Netherlands

Pages from

1

Pages to

8

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S2950648424000300

BibTex

@article{BUT197232,
  author="Miroslav {Bartošík} and Jindřich {Mach}",
  title="Next-generation photocatalytic system: Ga2O3-modified Ga Nanoislands on graphene for H2 production",
  journal="Applied Catalysis O: Open",
  year="2024",
  volume="191",
  number="206944",
  pages="1--8",
  doi="10.1016/j.apcato.2024.206944",
  issn="2950-6492",
  url="https://www.sciencedirect.com/science/article/pii/S2950648424000300"
}