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Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate
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| Zeitschriftentitel: | Catalysts |
|---|---|
| Personen und Körperschaften: | , , , , , |
| In: | Catalysts, 9, 2019, 2, S. 189 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
MDPI AG
|
| Schlagwörter: |
| author_facet |
Li, Qiang Wang, Lifang Fang, Xuhui Zhang, Li Li, Jingjiu Xie, Hongyong Li, Qiang Wang, Lifang Fang, Xuhui Zhang, Li Li, Jingjiu Xie, Hongyong |
|---|---|
| author |
Li, Qiang Wang, Lifang Fang, Xuhui Zhang, Li Li, Jingjiu Xie, Hongyong |
| spellingShingle |
Li, Qiang Wang, Lifang Fang, Xuhui Zhang, Li Li, Jingjiu Xie, Hongyong Catalysts Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate Physical and Theoretical Chemistry Catalysis |
| author_sort |
li, qiang |
| spelling |
Li, Qiang Wang, Lifang Fang, Xuhui Zhang, Li Li, Jingjiu Xie, Hongyong 2073-4344 MDPI AG Physical and Theoretical Chemistry Catalysis http://dx.doi.org/10.3390/catal9020189 <jats:p>In this work, the elimination of hexabromocyclododecane (HBCD) is explored by using photodegradation of the UV/TiO2 system, the UV/potassium persulfate (KPS) system, and the homo/heterogeneous UV/TiO2/KPS system. The experimental results show that the dosages of TiO2 and potassium persulfate have optimum values to increase the degradation degree. HBCD can be almost completely degraded and 74.3% of the total bromine content is achieved in the UV/TiO2/KPS homo/heterogeneous photocatalysis, much more than in the UV/persulfate system and the UV/TiO2 system. Roles of radicals SO4•− and OH• in the photocatalysis systems are discussed based on experimental measurements. The high yield of the concentration of bromide ions and decreased pH value indicates that synergistic effects exist in the UV/TiO2/KPS homo/heterogeneous photocatalysis, which can mineralize HBCD into inorganic small molecules like carboxylic acids, CO2 and H2O, thus much less intermediates are formed. The possible pathways of degradation of HBCD in the UV/TiO2/KPS system were also analyzed by GC/MS. This work will have practical application potential in the fields of pollution control and environmental management.</jats:p> Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate Catalysts |
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10.3390/catal9020189 |
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| title |
Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_unstemmed |
Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_full |
Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_fullStr |
Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_full_unstemmed |
Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_short |
Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_sort |
synergistic effect of photocatalytic degradation of hexabromocyclododecane in water by uv/tio2/persulfate |
| topic |
Physical and Theoretical Chemistry Catalysis |
| url |
http://dx.doi.org/10.3390/catal9020189 |
| publishDate |
2019 |
| physical |
189 |
| description |
<jats:p>In this work, the elimination of hexabromocyclododecane (HBCD) is explored by using photodegradation of the UV/TiO2 system, the UV/potassium persulfate (KPS) system, and the homo/heterogeneous UV/TiO2/KPS system. The experimental results show that the dosages of TiO2 and potassium persulfate have optimum values to increase the degradation degree. HBCD can be almost completely degraded and 74.3% of the total bromine content is achieved in the UV/TiO2/KPS homo/heterogeneous photocatalysis, much more than in the UV/persulfate system and the UV/TiO2 system. Roles of radicals SO4•− and OH• in the photocatalysis systems are discussed based on experimental measurements. The high yield of the concentration of bromide ions and decreased pH value indicates that synergistic effects exist in the UV/TiO2/KPS homo/heterogeneous photocatalysis, which can mineralize HBCD into inorganic small molecules like carboxylic acids, CO2 and H2O, thus much less intermediates are formed. The possible pathways of degradation of HBCD in the UV/TiO2/KPS system were also analyzed by GC/MS. This work will have practical application potential in the fields of pollution control and environmental management.</jats:p> |
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| author | Li, Qiang, Wang, Lifang, Fang, Xuhui, Zhang, Li, Li, Jingjiu, Xie, Hongyong |
| author_facet | Li, Qiang, Wang, Lifang, Fang, Xuhui, Zhang, Li, Li, Jingjiu, Xie, Hongyong, Li, Qiang, Wang, Lifang, Fang, Xuhui, Zhang, Li, Li, Jingjiu, Xie, Hongyong |
| author_sort | li, qiang |
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| description | <jats:p>In this work, the elimination of hexabromocyclododecane (HBCD) is explored by using photodegradation of the UV/TiO2 system, the UV/potassium persulfate (KPS) system, and the homo/heterogeneous UV/TiO2/KPS system. The experimental results show that the dosages of TiO2 and potassium persulfate have optimum values to increase the degradation degree. HBCD can be almost completely degraded and 74.3% of the total bromine content is achieved in the UV/TiO2/KPS homo/heterogeneous photocatalysis, much more than in the UV/persulfate system and the UV/TiO2 system. Roles of radicals SO4•− and OH• in the photocatalysis systems are discussed based on experimental measurements. The high yield of the concentration of bromide ions and decreased pH value indicates that synergistic effects exist in the UV/TiO2/KPS homo/heterogeneous photocatalysis, which can mineralize HBCD into inorganic small molecules like carboxylic acids, CO2 and H2O, thus much less intermediates are formed. The possible pathways of degradation of HBCD in the UV/TiO2/KPS system were also analyzed by GC/MS. This work will have practical application potential in the fields of pollution control and environmental management.</jats:p> |
| doi_str_mv | 10.3390/catal9020189 |
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| spelling | Li, Qiang Wang, Lifang Fang, Xuhui Zhang, Li Li, Jingjiu Xie, Hongyong 2073-4344 MDPI AG Physical and Theoretical Chemistry Catalysis http://dx.doi.org/10.3390/catal9020189 <jats:p>In this work, the elimination of hexabromocyclododecane (HBCD) is explored by using photodegradation of the UV/TiO2 system, the UV/potassium persulfate (KPS) system, and the homo/heterogeneous UV/TiO2/KPS system. The experimental results show that the dosages of TiO2 and potassium persulfate have optimum values to increase the degradation degree. HBCD can be almost completely degraded and 74.3% of the total bromine content is achieved in the UV/TiO2/KPS homo/heterogeneous photocatalysis, much more than in the UV/persulfate system and the UV/TiO2 system. Roles of radicals SO4•− and OH• in the photocatalysis systems are discussed based on experimental measurements. The high yield of the concentration of bromide ions and decreased pH value indicates that synergistic effects exist in the UV/TiO2/KPS homo/heterogeneous photocatalysis, which can mineralize HBCD into inorganic small molecules like carboxylic acids, CO2 and H2O, thus much less intermediates are formed. The possible pathways of degradation of HBCD in the UV/TiO2/KPS system were also analyzed by GC/MS. This work will have practical application potential in the fields of pollution control and environmental management.</jats:p> Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate Catalysts |
| spellingShingle | Li, Qiang, Wang, Lifang, Fang, Xuhui, Zhang, Li, Li, Jingjiu, Xie, Hongyong, Catalysts, Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate, Physical and Theoretical Chemistry, Catalysis |
| title | Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_full | Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_fullStr | Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_full_unstemmed | Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_short | Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| title_sort | synergistic effect of photocatalytic degradation of hexabromocyclododecane in water by uv/tio2/persulfate |
| title_unstemmed | Synergistic Effect of Photocatalytic Degradation of Hexabromocyclododecane in Water by UV/TiO2/persulfate |
| topic | Physical and Theoretical Chemistry, Catalysis |
| url | http://dx.doi.org/10.3390/catal9020189 |