Impact of H<sub>2</sub>O<sub>2</sub> on the Lactic and Formic Acid Degradation in Presence of TiO<sub>2</sub> Rutile and Anatase Phases under UV and Visible Light
The degradation rates of formic acid and lactic acid in the presence and absence of H<sub>2</sub>O<sub>2</sub> were studied, utilizing several TiO<sub>2</sub> catalysts: PC105 (100% anatase), MPT 625 (100% rutile), and P25 (80% anatase/20% rutile), and the results...
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MDPI AG
2020-10-01
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| author | Annika Holm Marwa Hamandi Karima Sahel Frederic Dappozze Chantal Guillard |
| author_facet | Annika Holm Marwa Hamandi Karima Sahel Frederic Dappozze Chantal Guillard |
| author_sort | Annika Holm |
| collection | DOAJ |
| description | The degradation rates of formic acid and lactic acid in the presence and absence of H<sub>2</sub>O<sub>2</sub> were studied, utilizing several TiO<sub>2</sub> catalysts: PC105 (100% anatase), MPT 625 (100% rutile), and P25 (80% anatase/20% rutile), and the results were discussed with regards to the current literature. The impact of hydrogen peroxide on the photocatalytic efficiency of eleven TiO<sub>2</sub> samples was then determined, using commercial anatase structures (PC105, PC500, UV100), commercial mixed anatase/rutile (P25 and P90), and six rutile (two commercial samples: MPT 625 and C-R160, and four home-made rutile samples were synthesized by TiCl<sub>4</sub> hydrolysis). The effect of catalyst surface area and TiO<sub>2</sub> phase on the degradation rate of lactic acid (LA) and the decomposition of H<sub>2</sub>O<sub>2</sub> was studied and discussed in regard to the active species generated. The intermediate products formed in the absence and presence of H<sub>2</sub>O<sub>2</sub> were also an important factor in the comparison. Finally, the efficiency of the degradation of LA and formic acid (FA) in the presence of rutile and H<sub>2</sub>O<sub>2</sub> was determined under visible light, and their reactivity was compared. The intermediate products formed in the degradation of LA were identified and quantified and compared to those obtained under UV (Ultra-Violet). |
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| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T15:55:16Z |
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| spelling | doaj.art-c2bea4a8a8204e1281cb32ae7385c7662023-11-20T15:45:46ZengMDPI AGCatalysts2073-43442020-10-011010113110.3390/catal10101131Impact of H<sub>2</sub>O<sub>2</sub> on the Lactic and Formic Acid Degradation in Presence of TiO<sub>2</sub> Rutile and Anatase Phases under UV and Visible LightAnnika Holm0Marwa Hamandi1Karima Sahel2Frederic Dappozze3Chantal Guillard4University of Lyon, Université Claude Bernard Lyon 1, 2 avenue Albert Einstein, F-69626 Villeurbanne, FranceUniversity of Lyon, Université Claude Bernard Lyon 1, 2 avenue Albert Einstein, F-69626 Villeurbanne, FranceLaboratoire des Eco-Matériaux Fonctionnels et Nanostructurés, Faculté de Chimie, Département Génie des Matériaux, Université des Sciences et de la Technologie d’Oran (USTO), Bir El Djir 3100, AlgeriaUniversity of Lyon, Université Claude Bernard Lyon 1, 2 avenue Albert Einstein, F-69626 Villeurbanne, FranceUniversity of Lyon, Université Claude Bernard Lyon 1, 2 avenue Albert Einstein, F-69626 Villeurbanne, FranceThe degradation rates of formic acid and lactic acid in the presence and absence of H<sub>2</sub>O<sub>2</sub> were studied, utilizing several TiO<sub>2</sub> catalysts: PC105 (100% anatase), MPT 625 (100% rutile), and P25 (80% anatase/20% rutile), and the results were discussed with regards to the current literature. The impact of hydrogen peroxide on the photocatalytic efficiency of eleven TiO<sub>2</sub> samples was then determined, using commercial anatase structures (PC105, PC500, UV100), commercial mixed anatase/rutile (P25 and P90), and six rutile (two commercial samples: MPT 625 and C-R160, and four home-made rutile samples were synthesized by TiCl<sub>4</sub> hydrolysis). The effect of catalyst surface area and TiO<sub>2</sub> phase on the degradation rate of lactic acid (LA) and the decomposition of H<sub>2</sub>O<sub>2</sub> was studied and discussed in regard to the active species generated. The intermediate products formed in the absence and presence of H<sub>2</sub>O<sub>2</sub> were also an important factor in the comparison. Finally, the efficiency of the degradation of LA and formic acid (FA) in the presence of rutile and H<sub>2</sub>O<sub>2</sub> was determined under visible light, and their reactivity was compared. The intermediate products formed in the degradation of LA were identified and quantified and compared to those obtained under UV (Ultra-Violet).https://www.mdpi.com/2073-4344/10/10/1131photocatalysisUVvisible lightTiO<sub>2</sub>rutileanatase |
| spellingShingle | Annika Holm Marwa Hamandi Karima Sahel Frederic Dappozze Chantal Guillard Impact of H<sub>2</sub>O<sub>2</sub> on the Lactic and Formic Acid Degradation in Presence of TiO<sub>2</sub> Rutile and Anatase Phases under UV and Visible Light Catalysts photocatalysis UV visible light TiO<sub>2</sub> rutile anatase |
| title | Impact of H<sub>2</sub>O<sub>2</sub> on the Lactic and Formic Acid Degradation in Presence of TiO<sub>2</sub> Rutile and Anatase Phases under UV and Visible Light |
| title_full | Impact of H<sub>2</sub>O<sub>2</sub> on the Lactic and Formic Acid Degradation in Presence of TiO<sub>2</sub> Rutile and Anatase Phases under UV and Visible Light |
| title_fullStr | Impact of H<sub>2</sub>O<sub>2</sub> on the Lactic and Formic Acid Degradation in Presence of TiO<sub>2</sub> Rutile and Anatase Phases under UV and Visible Light |
| title_full_unstemmed | Impact of H<sub>2</sub>O<sub>2</sub> on the Lactic and Formic Acid Degradation in Presence of TiO<sub>2</sub> Rutile and Anatase Phases under UV and Visible Light |
| title_short | Impact of H<sub>2</sub>O<sub>2</sub> on the Lactic and Formic Acid Degradation in Presence of TiO<sub>2</sub> Rutile and Anatase Phases under UV and Visible Light |
| title_sort | impact of h sub 2 sub o sub 2 sub on the lactic and formic acid degradation in presence of tio sub 2 sub rutile and anatase phases under uv and visible light |
| topic | photocatalysis UV visible light TiO<sub>2</sub> rutile anatase |
| url | https://www.mdpi.com/2073-4344/10/10/1131 |
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