Enhanced activity for catalytic combustion of ethylene by the Pt nanoparticles confined in TiO2 nanotube with surface oxygen vacancy

VOCs, volatile organic compounds, which are mostly produced by the excessive emission of different industrial and commercial activities, pose a serious hazard to human health primarily contribute creation photochemical smog, has significant influence on air quality. The treatment VOCs catalytic oxidation at lowest feasible temperature been acknowledged as an efficient cost-effective approach. Here, novel catalyst with platinum (Pt) nanoparticles confined in TiO2 nanotubes (TNT) surface oxygen vacancy towards combustion ethylene prepared. Through liquid-phase reduction strategy using sodium borohydride (NaBH4) reducing agent, vacancies effectively inserted onto TNT regulating time, named R-TNT. Subsequently, Pt was permitted be trapped within R-TNT (Pt-in/R-TNT) via vacuum assisted-impregnation method. (Pt-in/TNT) could reduce down about 175 °C for complete ethylene, kind roughly 10 lower than loaded (Pt-out/TNT). More intriguing, Pt-in/R-TNT displayed highest activity lowered 20 °C. X-ray photoelectron spectroscopy (XPS) Ultraviolet–visible (UV–vis) measurements revealed that saturation amount were successfully introduced into NaBH4 solution. Based confinement effect TNT, formation active species further aggravate electron density destitution inside TNT. Hence, significantly enhanced. A high-performance removing is presented coupled modifier