BibTex format
@article{Jiamprasertboon:2026:10.1016/j.surfin.2026.110788,
author = {Jiamprasertboon, A and Sailuam, W and Nachaithong, T and Chaveanghong, S and Pankaew, A and Nijpanich, S and Saisopa, T and Alimard, P and Kafizas, A and Iamprasertkun, P and Eknapakul, T},
doi = {10.1016/j.surfin.2026.110788},
journal = {Surfaces and Interfaces},
title = {Direct access to aqueous WSe2 nanoflakes via rotary evaporation for adsorption and photocatalytic degradation of cationic dyes},
url = {http://dx.doi.org/10.1016/j.surfin.2026.110788},
volume = {99},
year = {2026}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Two-dimensional (2D) transition metal dichalcogenides (TMDs) have emerged as promising materials for photocatalysis and environmental remediation owing to their tunable electronic structures and high surface-to-volume ratios. However, their practical performance is often limited by nanosheet restacking and aggregation following liquid-phase exfoliation (LPE), particularly during solvent removal, which reduces accessible active sites and adsorption efficiency. Here, we report a solvent-exchange-enabled strategy to obtain highly concentrated and stable aqueous WSe<inf>2</inf> nanoflakes via LPE followed by controlled rotary evaporation to selectively remove isopropanol. This approach produces aqueous dispersions with concentrations up to 0.70 ± 0.05 mg mL<sup>–1</sup>, while preserving the 2H-WSe<inf>2</inf> phase, crystallinity, and morphology, as confirmed by comprehensive characterization. Importantly, the resulting material remains in a ready-to-use aqueous colloidal state, eliminating the need for an intermediate drying and redispersion step prior to aqueous-phase applications. The resulting aqueous WSe<inf>2</inf> nanoflakes exhibit rapid dye removal, with >95% removal observed at the first experimentally measured time point (1 min) under specific MB and Rh B adsorption conditions. A maximum adsorption capacity of 197.3 ± 20.0 mg g<sup>–1</sup> for MB was obtained, and the adsorption behavior was well described by the Langmuir model, indicating predominantly monolayer adsorption. These results demonstrate the advantage of maintaining WSe<inf>2</inf> in an exfoliated and directly usable aqueous dispersion for adsorption applications. Following adsorption, the WSe<inf>2</inf> nanoflakes demonstrate measurable visible-light-driven photocatalytic activity following pseudo-first-order kinetics (MB = 6.69 × 10<sup>–3</sup> min<sup
AU - Jiamprasertboon,A
AU - Sailuam,W
AU - Nachaithong,T
AU - Chaveanghong,S
AU - Pankaew,A
AU - Nijpanich,S
AU - Saisopa,T
AU - Alimard,P
AU - Kafizas,A
AU - Iamprasertkun,P
AU - Eknapakul,T
DO - 10.1016/j.surfin.2026.110788
PY - 2026///
SN - 2468-0230
TI - Direct access to aqueous WSe2 nanoflakes via rotary evaporation for adsorption and photocatalytic degradation of cationic dyes
T2 - Surfaces and Interfaces
UR - http://dx.doi.org/10.1016/j.surfin.2026.110788
VL - 99
ER -