Comments on “Interlayer Atomic Voids by Partial Cesium Defect in Layered Titanate Activate Photo(electro)catalytic H <sub>2</sub> and O <sub>2</sub> Generation”
Üstünel et al. ( ACS Appl. Energy Mater., DOI: 10.1021/acsaem.5c01514) recently proposed the interesting concept of interlayer Cs voids formation in lepidocrocite-type Cs2Ti6O13. This was accomplished via treatment of the titanate with an aqueous solution of cetyltrimethylammonium bromide, followed by heat treatment at 700 °C. We present an alternative explanation focusing on: (i) unintended proton exchange from the medium; and (ii) subsequent thermal dehydration/dehydroxylation to anatase and “defective Cs2Ti6O13”. Our interpretation based on the classical chemistry of layered materials is consistent with their experimental results.
Authors
- Tosapol Maluangnont (ORCID: https://orcid.org/0000-0002-6213-5539)
Institutions
- Center for NanoScience (DE)
- Applied Nanotech (United States) (US)
- Centre de Nanosciences et de Nanotechnologies (FR)
- King Mongkut's Institute of Technology Ladkrabang (TH)
Publication Details
- Journal
- ACS Applied Energy Materials
- Published
- 2026-03-02
- DOI
- https://doi.org/10.1021/acsaem.5c03253
- Primary Topic
- TiO2 Photocatalysis and Solar Cells
- Type
- article
- Field-Weighted Citation Impact
- 0.00