BibTex format
@article{Eknapakul:2026:10.1016/j.jallcom.2026.188319,
author = {Eknapakul, T and Kadasae, N and Kafizas, A and Choong, CE and Siritanon, T and Sailuam, W and Chaveanghong, S and Pansong, Y and Supmeak, N and Li, H and Carmalt, CJ and Jiamprasertboon, A},
doi = {10.1016/j.jallcom.2026.188319},
journal = {Journal of Alloys and Compounds},
title = {Subsurface Ag-modified BiNbO: kinetic modulation of photocatalytic oxidation and hydrogen evolution},
url = {http://dx.doi.org/10.1016/j.jallcom.2026.188319},
volume = {1066},
year = {2026}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Subsurface silver-modified Bi3NbO7 photocatalysts were synthesized via a hydrothermal method to investigate the role of metal spatial distribution in photocatalytic pathways. Integrated structural, physicochemical, spectroscopic and theoretical analyses confirm that Ag is in the subsurface region rather than forming surface nanoparticles or substituting into the Bi3NbO7 lattice, inducing localized distortions without altering the bulk crystal structure or the electronic band structure. Despite these minimal thermodynamic changes, the photocatalytic activities for Rhodamine B degradation and hydrogen evolution vary significantly across samples. Photoelectrochemical and transient absorption spectroscopic studies reveal that the catalytic activities and selectivity are primarily driven by charge carrier kinetics. Specifically, subsurface Ag dispersion modulates the competition between oxidation, governed by hole availability, and reduction, which is sensitive to electron-hole separation efficiency. This study presents a ‘subsurface-mediated kinetic control’ strategy, offering tuneable reaction selectivity through engineering the spatial location of metallic species.
AU - Eknapakul,T
AU - Kadasae,N
AU - Kafizas,A
AU - Choong,CE
AU - Siritanon,T
AU - Sailuam,W
AU - Chaveanghong,S
AU - Pansong,Y
AU - Supmeak,N
AU - Li,H
AU - Carmalt,CJ
AU - Jiamprasertboon,A
DO - 10.1016/j.jallcom.2026.188319
PY - 2026///
SN - 0925-8388
TI - Subsurface Ag-modified BiNbO: kinetic modulation of photocatalytic oxidation and hydrogen evolution
T2 - Journal of Alloys and Compounds
UR - http://dx.doi.org/10.1016/j.jallcom.2026.188319
UR - https://doi.org/10.1016/j.jallcom.2026.188319
VL - 1066
ER -