02490nas a2200217   4500008004100000245013500041210006900176260000900245300001600254490000700270520166700277100002401944700002101968700002601989700002702015700002602042700002302068700002202091700002802113856013102141       2025                        eng d00aSurfactant-assisted tungsten oxide for enhanced acetone sensing and solar-driven photocatalysis: exploring the role of surfactants0 aSurfactantassisted tungsten oxide for enhanced acetone sensing a  cAUG   a27895-279070 v153 a<p>
	Surfactants play a pivotal role in the kinetics of nucleation and accretion of nanoparticles in such a way that they serve as a template for the development of nanostructures, consequently influencing the morphology, dimensions, and other surface properties. Herein, we report the influence of cationic and anionic surfactants (CTAB, SDS, PVP and HMT) on the development of pristine WO3 nanostructures and their impact on gas sensing and photocatalytic properties of WO3. The various surfactant-assisted WO3 nanostructures were synthesized via a straightforward hydrothermal route and systematically analyzed using XRD, FESEM-EDAX, TEM/HRTEM, XPS, UV-Vis, and BET measurements. Gas sensing properties of various oxidizing and reducing gases revealed superior selectivity towards acetone. Among the various surfactant-assisted WO3, CTAB/WO3 exhibited an excellent response of 84.84% towards 100 ppm acetone at an optimal operating temperature of 300 degrees C. The CTAB/WO3 sensor exhibited a linear response to acetone at lower concentrations, showing a 4.8% response at 0.8 ppm, which delineates the threshold between healthy and diabetic breath acetone levels. At 1.8 ppm, the sensor recorded 8.1% response, aligning with diabetes values reported by National Institute for Occupational Safety and Health (NIOSH). Moreover, photocatalytic performance evaluations demonstrated a methylene blue degradation efficiency of 47.19% under natural solar irradiation. This work will motivate researchers in developing high performance acetone gas sensors and photocatalytic dye-degradation by the integration of appropriate surfactants in WO3 nanostructures.</p>
1 aPatil, Abhijeet, P.1 aPatil, Suraj, S.1 aTamboli, Mohaseen, S.1 aDamkale, Shubhangi, R.1 aNadargi, Digambar, Y.1 aNadargi, Jyoti, D.1 aMulla, Imtiaz, S.1 aSuryavanshi, Sharad, S.  uhttps://library.ncl.res.in/content/surfactant-assisted-tungsten-oxide-enhanced-acetone-sensing-and-solar-driven-photocatalysis