Enhancement of Z-Scheme Water Splitting Using Photocatalyst Sheets Fabricated by Simple Filtration of Long-Wavelength Visible-Light-Responsive Nonoxides and Carbon Nanotubes
Z-scheme water splitting was observed for photocatalyst sheets consisting of narrow-band-gap SrTaO2N (2.1 eV) and La5Ti2Cu0.9Ag0.1O7S5 (1.8 eV) immobilized by filtration of their suspension containing conductive carbon nanotubes. Preloading of carbon nanotubes on SrTaO2N and refinement of cocatalyst loading allowed the photocatalyst sheet to split water with an apparent quantum yield of 0.13% at 430 nm, which was superior to that reported for the photocatalyst sheet prepared by the particle transfer method using Au as the conductive material. The proposed method offers a facile, low-cost approach for the fabrication of photocatalyst sheets based on long-wavelength visible-light-responsive nonoxides for Z-scheme water splitting.
Authors
- Nobuyuki Zettsu (ORCID: https://orcid.org/0000-0003-2838-3165)
- Chen Gu (ORCID: https://orcid.org/0000-0001-5805-5010)
- Kazunari Domen (ORCID: https://orcid.org/0000-0001-7995-4832)
- Swarnava Nandy (ORCID: https://orcid.org/0000-0001-5089-5840)
- Rhauane Almeida Galvão (ORCID: https://orcid.org/0000-0003-2061-0415)
- Takashi Hisatomi
- Tsutomu Takata
Institutions
- Shinshu University (JP)
- Kyung Hee University (KR)
- The University of Tokyo (JP)
Publication Details
- Journal
- ACS Applied Energy Materials
- Published
- 2025-01-10
- DOI
- https://doi.org/10.1021/acsaem.4c02727
- Citations
- 4
- Primary Topic
- Advanced Photocatalysis Techniques
- Type
- article
- Field-Weighted Citation Impact
- 1.45
Funders
- New Energy and Industrial Technology Development Organization
- Japan Society for the Promotion of Science