Comparative removal of hazardous cationic dyes by MOF-5 and modified graphene oxide
Abstract Among cationic dyes, malachite green (MG) is commonly used for dying purposes and also as an inhibitor in aquaculture, food, health, and chemical industries due to its cytotoxic effects. Therefore, MG removal is essential to keep the ecosystem and human health safety. Adsorption is a viable...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-19550-5 |
| _version_ | 1797995046952239104 |
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| author | Ali Akbar Mohammadi Soheila Moghanlo Malihe Samadi Kazemi Shahram Nazari Seid Kamal Ghadiri Hossein Najafi Saleh Mika Sillanpää |
| author_facet | Ali Akbar Mohammadi Soheila Moghanlo Malihe Samadi Kazemi Shahram Nazari Seid Kamal Ghadiri Hossein Najafi Saleh Mika Sillanpää |
| author_sort | Ali Akbar Mohammadi |
| collection | DOAJ |
| description | Abstract Among cationic dyes, malachite green (MG) is commonly used for dying purposes and also as an inhibitor in aquaculture, food, health, and chemical industries due to its cytotoxic effects. Therefore, MG removal is essential to keep the ecosystem and human health safety. Adsorption is a viable and versatile option and exploring efficient adsorbents have high priority. Herein, MOF-5 and aminated corn Stover reduced graphene oxide (ACS-RGO) of typical adsorbents of metal–organic-frameworks (MOFs) and carbon-based classes were studied for MG removal. MOF-5 and ACS-RGO had a specific surface area and total pore volume of 507.4 and 389.0 m2/g, and 0.271 cm3/g and 0.273 cm3/g, respectively. ACS-RGO was superior for MG adsorption and the kinetic rate coefficient for ACS-RGO was ~ 7.2 times compared to MOF-5. For ACS-RGO, MG removal remained high (> 94%) in a wide range of pH. However, dye removal was pH-dependent for MOF-5 and increased from ~ 32% to ~ 67% by increasing pH from 4 to 12. Increasing dye concentration from 25 mg/L to 100 mg/L decreased adsorption by MOF-5 and ACS-RGO for ~ 30% and 7%, respectively. Dye removal was evident in a few tens of seconds after adding ACS-RGO at doses above 0.5 g/L. A significant loss of 46% in adsorption was observed by decreasing MOF-5 mass from 1 to 0.1 g/L. ACS-RGO removed MG in multilayer with an exceptional adsorption capacity of 1088.27 mg/g. In conclusion, ACS-RGO, and MOF-5 showed promising kinetic rates and adsorption capacities toward MG. |
| first_indexed | 2024-04-11T09:54:20Z |
| format | Article |
| id | doaj.art-a85343cfd852400eb4817a557fe5d133 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T09:54:20Z |
| publishDate | 2022-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-a85343cfd852400eb4817a557fe5d1332022-12-22T04:30:41ZengNature PortfolioScientific Reports2045-23222022-09-0112111210.1038/s41598-022-19550-5Comparative removal of hazardous cationic dyes by MOF-5 and modified graphene oxideAli Akbar Mohammadi0Soheila Moghanlo1Malihe Samadi Kazemi2Shahram Nazari3Seid Kamal Ghadiri4Hossein Najafi Saleh5Mika Sillanpää6Department of Environmental Health Engineering, Neyshabur University of Medical SciencesDepartment of Environmental Health Engineering, Zanjan University of Medical SciencesDepartment of Chemistry, Faculty of Sciences, Bojnourd Branch, Islamic Azad UniversityDepartment of Environmental Health Engineering, Khalkhal University of Medical SciencesDepartment of Environmental Health Engineering, School of Public Health, Shahroud University of Medical SciencesDepartment of Environmental Health Engineering, Khalkhal University of Medical SciencesDepartment of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of JohannesburgAbstract Among cationic dyes, malachite green (MG) is commonly used for dying purposes and also as an inhibitor in aquaculture, food, health, and chemical industries due to its cytotoxic effects. Therefore, MG removal is essential to keep the ecosystem and human health safety. Adsorption is a viable and versatile option and exploring efficient adsorbents have high priority. Herein, MOF-5 and aminated corn Stover reduced graphene oxide (ACS-RGO) of typical adsorbents of metal–organic-frameworks (MOFs) and carbon-based classes were studied for MG removal. MOF-5 and ACS-RGO had a specific surface area and total pore volume of 507.4 and 389.0 m2/g, and 0.271 cm3/g and 0.273 cm3/g, respectively. ACS-RGO was superior for MG adsorption and the kinetic rate coefficient for ACS-RGO was ~ 7.2 times compared to MOF-5. For ACS-RGO, MG removal remained high (> 94%) in a wide range of pH. However, dye removal was pH-dependent for MOF-5 and increased from ~ 32% to ~ 67% by increasing pH from 4 to 12. Increasing dye concentration from 25 mg/L to 100 mg/L decreased adsorption by MOF-5 and ACS-RGO for ~ 30% and 7%, respectively. Dye removal was evident in a few tens of seconds after adding ACS-RGO at doses above 0.5 g/L. A significant loss of 46% in adsorption was observed by decreasing MOF-5 mass from 1 to 0.1 g/L. ACS-RGO removed MG in multilayer with an exceptional adsorption capacity of 1088.27 mg/g. In conclusion, ACS-RGO, and MOF-5 showed promising kinetic rates and adsorption capacities toward MG.https://doi.org/10.1038/s41598-022-19550-5 |
| spellingShingle | Ali Akbar Mohammadi Soheila Moghanlo Malihe Samadi Kazemi Shahram Nazari Seid Kamal Ghadiri Hossein Najafi Saleh Mika Sillanpää Comparative removal of hazardous cationic dyes by MOF-5 and modified graphene oxide Scientific Reports |
| title | Comparative removal of hazardous cationic dyes by MOF-5 and modified graphene oxide |
| title_full | Comparative removal of hazardous cationic dyes by MOF-5 and modified graphene oxide |
| title_fullStr | Comparative removal of hazardous cationic dyes by MOF-5 and modified graphene oxide |
| title_full_unstemmed | Comparative removal of hazardous cationic dyes by MOF-5 and modified graphene oxide |
| title_short | Comparative removal of hazardous cationic dyes by MOF-5 and modified graphene oxide |
| title_sort | comparative removal of hazardous cationic dyes by mof 5 and modified graphene oxide |
| url | https://doi.org/10.1038/s41598-022-19550-5 |
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