Photolysis, photochemical and homogeneous photocatalytic oxidation of Congo red dye by hydrogen peroxide
The kinetics of photolysis, photochemical and homogeneous photocatalytic oxidation of model solutions of azo dyes by hydrogen peroxide has been studied using the example of Congo red. The rate constants of the photolysis and photochemical oxidation reactions of Congo red based on quantum chemical ca...
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| description | The kinetics of photolysis, photochemical and homogeneous photocatalytic oxidation of model solutions of azo dyes by hydrogen peroxide has been studied using the example of Congo red. The rate constants of the photolysis and photochemical oxidation reactions of Congo red based on quantum chemical calculations were consistent with the experimental rate constants of the reactions. It has been established that the highest oxidation state of the Congo red dye (99.9%) was observed under photochemical oxidation (catalyst iron (II) ions). A decrease in the intensities of absorption maxima in the spectra of a Congo red solution in the photochemical oxidation process with hydrogen peroxide and their complete disappearance after 4 hours in the presence of iron (II) ions shows that the dye is mineralized. |
| doi_str_mv | 10.1063/5.0069645 |
| format | Conference Proceeding |
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V. ; Isakov, V. A.</creator><contributor>Glukhareva, Tatiana ; Bakulev, Vasiliy ; Schafran, Yuri ; Beryozkina, Tatiana ; Koptyaeva, Olga ; Lyubyakina, Polina ; Kovaleva, Elena</contributor><creatorcontrib>Zykova, I. V. ; Isakov, V. A. ; Glukhareva, Tatiana ; Bakulev, Vasiliy ; Schafran, Yuri ; Beryozkina, Tatiana ; Koptyaeva, Olga ; Lyubyakina, Polina ; Kovaleva, Elena</creatorcontrib><description>The kinetics of photolysis, photochemical and homogeneous photocatalytic oxidation of model solutions of azo dyes by hydrogen peroxide has been studied using the example of Congo red. The rate constants of the photolysis and photochemical oxidation reactions of Congo red based on quantum chemical calculations were consistent with the experimental rate constants of the reactions. It has been established that the highest oxidation state of the Congo red dye (99.9%) was observed under photochemical oxidation (catalyst iron (II) ions). A decrease in the intensities of absorption maxima in the spectra of a Congo red solution in the photochemical oxidation process with hydrogen peroxide and their complete disappearance after 4 hours in the presence of iron (II) ions shows that the dye is mineralized.</description><identifier>ISSN: 0094-243X</identifier><identifier>EISSN: 1551-7616</identifier><identifier>DOI: 10.1063/5.0069645</identifier><identifier>CODEN: APCPCS</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Chemical reactions ; Dyes ; Hydrogen peroxide ; Iron ; Oxidation ; Photocatalysis ; Photochemical reactions ; Photolysis ; Quantum chemistry ; Rate constants ; Valence</subject><ispartof>AIP conference proceedings, 2022, Vol.2390 (1)</ispartof><rights>Author(s)</rights><rights>2022 Author(s). 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A.</creatorcontrib><title>Photolysis, photochemical and homogeneous photocatalytic oxidation of Congo red dye by hydrogen peroxide</title><title>AIP conference proceedings</title><description>The kinetics of photolysis, photochemical and homogeneous photocatalytic oxidation of model solutions of azo dyes by hydrogen peroxide has been studied using the example of Congo red. The rate constants of the photolysis and photochemical oxidation reactions of Congo red based on quantum chemical calculations were consistent with the experimental rate constants of the reactions. It has been established that the highest oxidation state of the Congo red dye (99.9%) was observed under photochemical oxidation (catalyst iron (II) ions). A decrease in the intensities of absorption maxima in the spectra of a Congo red solution in the photochemical oxidation process with hydrogen peroxide and their complete disappearance after 4 hours in the presence of iron (II) ions shows that the dye is mineralized.</description><subject>Chemical reactions</subject><subject>Dyes</subject><subject>Hydrogen peroxide</subject><subject>Iron</subject><subject>Oxidation</subject><subject>Photocatalysis</subject><subject>Photochemical reactions</subject><subject>Photolysis</subject><subject>Quantum chemistry</subject><subject>Rate constants</subject><subject>Valence</subject><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2022</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNp9kE9LxDAQxYMouK4e_AYBb2LXNGnS9iiL_2BBDwrewrSdbrN0m5pkxX57W3fBm8xhBub3ZniPkMuYLWKmxK1cMKZylcgjMouljKNUxeqYzBjLk4gn4uOUnHm_YYznaZrNSPPa2GDbwRt_Q_tpLhvcmhJaCl1FG7u1a-zQ7vxhCwHaIZiS2m9TQTC2o7amS9utLXVY0WpAWgy0GSo3KWmPbiLxnJzU0Hq8OPQ5eX-4f1s-RauXx-fl3SrqY5WFqCgLEHUBAHkqVT16QeAiyQTwnKOUEqBIAZFLjsAyzjKVYpnlkhVCsLHm5Gp_t3f2c4c-6I3duW58qbniUmRCcTFS13vKlyb8utC9M1twg_6yTkt9SFH3Vf0fHDM9xf4nED8Kz3Yi</recordid><startdate>20220204</startdate><enddate>20220204</enddate><creator>Zykova, I. V.</creator><creator>Isakov, V. A.</creator><general>American Institute of Physics</general><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20220204</creationdate><title>Photolysis, photochemical and homogeneous photocatalytic oxidation of Congo red dye by hydrogen peroxide</title><author>Zykova, I. V. ; Isakov, V. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p168t-bcba3fbaaa9756f069ea23483a292e555aab7aee252ea0820867ec8950b330303</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Chemical reactions</topic><topic>Dyes</topic><topic>Hydrogen peroxide</topic><topic>Iron</topic><topic>Oxidation</topic><topic>Photocatalysis</topic><topic>Photochemical reactions</topic><topic>Photolysis</topic><topic>Quantum chemistry</topic><topic>Rate constants</topic><topic>Valence</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zykova, I. V.</creatorcontrib><creatorcontrib>Isakov, V. A.</creatorcontrib><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zykova, I. V.</au><au>Isakov, V. A.</au><au>Glukhareva, Tatiana</au><au>Bakulev, Vasiliy</au><au>Schafran, Yuri</au><au>Beryozkina, Tatiana</au><au>Koptyaeva, Olga</au><au>Lyubyakina, Polina</au><au>Kovaleva, Elena</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Photolysis, photochemical and homogeneous photocatalytic oxidation of Congo red dye by hydrogen peroxide</atitle><btitle>AIP conference proceedings</btitle><date>2022-02-04</date><risdate>2022</risdate><volume>2390</volume><issue>1</issue><issn>0094-243X</issn><eissn>1551-7616</eissn><coden>APCPCS</coden><abstract>The kinetics of photolysis, photochemical and homogeneous photocatalytic oxidation of model solutions of azo dyes by hydrogen peroxide has been studied using the example of Congo red. The rate constants of the photolysis and photochemical oxidation reactions of Congo red based on quantum chemical calculations were consistent with the experimental rate constants of the reactions. It has been established that the highest oxidation state of the Congo red dye (99.9%) was observed under photochemical oxidation (catalyst iron (II) ions). A decrease in the intensities of absorption maxima in the spectra of a Congo red solution in the photochemical oxidation process with hydrogen peroxide and their complete disappearance after 4 hours in the presence of iron (II) ions shows that the dye is mineralized.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0069645</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-243X |
| ispartof | AIP conference proceedings, 2022, Vol.2390 (1) |
| issn | 0094-243X 1551-7616 |
| language | eng |
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| source | AIP Journals Complete |
| subjects | Chemical reactions Dyes Hydrogen peroxide Iron Oxidation Photocatalysis Photochemical reactions Photolysis Quantum chemistry Rate constants Valence |
| title | Photolysis, photochemical and homogeneous photocatalytic oxidation of Congo red dye by hydrogen peroxide |
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