| Title: | Photocatalytic effect of addition of TiO(2) to acrylic-based paint for passive toluene degradation |
| Author(s): | Basso A; Battisti AP; Moreira R; Jose HJ; |
| Address: | "Department of Chemical and Food Engineering (EQA), Federal University of Santa Catarina (UFSC), Florianopolis, Santa Catarina, Brazil" |
| DOI: | 10.1080/09593330.2018.1542034 |
| ISSN/ISBN: | 1479-487X (Electronic) 0959-3330 (Linking) |
| Abstract: | "Volatile organic compounds (VOCs) are known to be hazardous and associated with several human health problems. Thus, many technologies have been developed in recent years for their removal, such as thermal catalysis, photocatalysis and ozonization. In this study, the main objective was to evaluate the effects of incorporating titanium dioxide into an acrylic-based paint for gaseous toluene abatement. Paints with photocatalytic properties were prepared by adding TiO(2) P25 powder to an acrylic-based paint, using the following proportions: 0, 10, 15, 20 and 50 wt% (dry basis). Toluene and CO(2) concentrations at the reactor input and output were determined using GC/MS, and GC/FID, respectively, and the toluene conversion and CO(2) formation were assessed. The compounds adsorbed onto photocatalytic paints were extracted and then identified by GC/MS. The results indicated that the addition of 50 wt% of TiO(2) P25 results in a paint of reduced quality. The addition of 20 wt% of TiO(2) P25 to the paint led to higher values for the photocatalytic conversion of toluene to CO(2). The occurrence of two simultaneous processes was observed: the photocatalytic oxidation of toluene to CO(2) and the self-degradation of the organic compounds, such as polymeric acrylic, in the paint. The adsorption of different compounds onto the photocatalytic paints was identified by GC/MS analysis. The use of photocatalytic paints is a promising technique for toluene abatement, but it requires further study and improvement particularly with regard to the effects of the self-degradation of the paint" |
| Keywords: | Catalysis Paint *Titanium *Toluene Ultraviolet Rays Photocatalysis air purification mass spectrometry mineralization organic paint; |
| Notes: | "MedlineBasso, Alex Battisti, Andrei Pavei Moreira, Regina de Fatima Peralta Muniz Jose, Humberto Jorge eng England 2018/10/30 Environ Technol. 2020 May; 41(12):1568-1579. doi: 10.1080/09593330.2018.1542034. Epub 2018 Nov 5" |
