| Title: | Influence of palladium content dispersed in the TiO(2) photocatalyst for degradation of volatile organic compounds in gas emission |
| Author(s): | da Silveira AEC; Ribeiro BMB; Bricio BGM; Fujimoto TM; Doubek ULR; Tomaz E; |
| Address: | "Department of Process Engineering, School of Chemical Engineering, University of Campinas, Av. Albert Einstein, 500, Campinas, SP, CEP 13083-852, Brazil. Department of Process Engineering, School of Chemical Engineering, University of Campinas, Av. Albert Einstein, 500, Campinas, SP, CEP 13083-852, Brazil. barbara.borgesribeiro@yahoo.com.br" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-021-17075-4 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "Heterogeneous photocatalysis is highlighted to treat volatile organic compound (VOC) emission. Then, this work analysed the influence of palladium (Pd) content loaded in TiO(2) on n-octane and iso-octane photodegradation. For this, TiO(2) was loaded with Pd in different contents: 0.4%, 0.7%, and 1.0%. The samples were characterized, and the photodegradation experiments were conducted by Pd/TiO(2)/UV process. The characterization analyses showed that the metal presence did not change the catalyst structure or its surface area; however, it reduced the bandgap energy. The photocatalytic results proved that palladium improved n-octane degradation from 62% (pure TiO(2)) to 92.6% (0.4%Pd/TiO(2)) and, iso-octane degradation enhanced from 59% (pure TiO(2)) to 90.6% (0.7%Pd/TiO(2)); all results were obtained in the space time of 39 s. Therefore, 0.4%Pd/TiO(2) and 0.7%Pd/TiO(2) showed better oxidation results to degradation n-octane and iso-octane, respectively. The kinetic model of pseudo-first order showed a good fit for the data of both VOCs. Heterogeneous photocatalysis with Pd/TiO(2) showed to be an adequate technique to reduce VOCs emission" |
| Keywords: | Catalysis Octanes Palladium/chemistry Titanium/chemistry Ultraviolet Rays *Volatile Organic Compounds/analysis Gas phase Iso-octane N-octane Palladium Photocatalysis Titanium dioxide Voc; |
| Notes: | "Medlineda Silveira, Arnaldo Efigenio Castro Ribeiro, Barbara Maria Borges Bricio, Bianca Gvozdenovic Medina Fujimoto, Tania Miyoko Doubek, Ursula Luana Rochetto Tomaz, Edson eng Germany 2021/10/30 Environ Sci Pollut Res Int. 2022 Jun; 29(28):42242-42250. doi: 10.1007/s11356-021-17075-4. Epub 2021 Oct 28" |
