The preparation of nano-TiO<inf>2</inf> modified fluorocarbon paint for the research of degradation of formaldehyde properties

Abstract

In this paper, highly photocatalytic activity of nano-TiO 2 modified fluorocarbon paint for formaldehyde degradation has been successfully prepared. The nano-TiO 2 was prepared in sol-gel process and the TEM of the sample shows the mean diameters of nano-TiO 2 particles are less than 10nm. The photoluminescence (PL) spectrum shows a sharp peak at 502nm under the excitation source of 493nm. After modified by surface active agent monolaurin with an HLB value of 5.2, the nano-TiO 2 can be added into fluorocarbon paint successfully. The efficiency of the formaldehyde degradation by the nano-TiO 2 modified fluorocarbon paint is 95.0% under natural light irradiation while the mechanical properties can meet the actual application requirements. So the problem of formaldehyde organic pollutants produced during decoration can be managed from its source and it has the effect of health, energy saving, and air purification. Keywords-nano-TiO 2 ; fluorocarbon paint; degradation of formaldehyde properties____________________________________ 978-1-4799-3336-5/13/$31.00

Efficiencies Evaluation of Photocatalytic Paints Under Indoor and Outdoor Air Conditions

“…have followed the standard ISO 1524 (2007) using a flat plate continuous photoreactor irradiated with UV light; other authors have employed reaction chambers (Maggos et al, 2007a,b;Salthammer and Fuhrmann, 2007) or other type of flow reactors (Laufs et al, 2010;Ângelo et al, 2014) and have used sunlight (Ângelo et al, 2014) or visible light (Salthammer and Fuhrmann, 2007) as the energy source for the NO x photocatalytic oxidation. Second are VOCs such as formaldehyde (Salthammer and Fuhrmann, 2007;Fu et al, 2013), acetaldehyde (Salvadores et al, 2020a,b), n-decane (Monteiro et al, 2014), perchloroethylene (Monteiro et al, 2015), and toluene (Maggos et al, 2007c) applying UV radiation in most of them. Third are other toxic or dangerous compounds like CO (Salthammer and Fuhrmann, 2007) and benzo-[a]-pyrene (Tryba et al, 2014).…”