Immobilization of MnO2 nanoflowers on coils using direct heating method for organic pollutant remediation
The immobilization of catalysts on supporting substrates for the removal of organic pollutants is a crucial strategy for mitigating catalyst loss during wastewater treatment. This study presented a rapid and cost-effective direct heating method for synthesizing MnO2 nanoflowers on coil substrates fo...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-06-01
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| Series: | Water Science and Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674237024000772 |
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| author | Sin Ling Chiam Swee-Yong Pung Chee Meng Koe Fei Yee Yeoh |
| author_facet | Sin Ling Chiam Swee-Yong Pung Chee Meng Koe Fei Yee Yeoh |
| author_sort | Sin Ling Chiam |
| collection | DOAJ |
| description | The immobilization of catalysts on supporting substrates for the removal of organic pollutants is a crucial strategy for mitigating catalyst loss during wastewater treatment. This study presented a rapid and cost-effective direct heating method for synthesizing MnO2 nanoflowers on coil substrates for the removal of organic pollutants. Traditional methods often require high power, expensive equipment, and long synthesis times. In contrast, the direct heating approach successfully synthesized MnO2 nanoflowers in just 10 min with a heating power of approximately 40 W·h after the heating power and duration were optimized. These nanoflowers effectively degraded 99% Rhodamine B in 60 min with consistent repeatability. The catalytic mechanisms are attributed to crystal defects in MnO2, which generate electrons to produce H2O2. Mn2+ ions in the acidic solution further dissociate H2O2 molecules into hydroxyl radicals (·OH). The high efficiency of this synthesis method and the excellent reusability of MnO2 nanoflowers highlight their potential as a promising solution for the development of supporting MnO2 catalysts for organic dye removal applications. |
| format | Article |
| id | doaj-art-7481551032e24b44a03ebe50cd6188be |
| institution | Kabale University |
| issn | 1674-2370 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Science and Engineering |
| spelling | doaj-art-7481551032e24b44a03ebe50cd6188be2025-08-20T03:55:22ZengElsevierWater Science and Engineering1674-23702025-06-0118216517610.1016/j.wse.2024.09.001Immobilization of MnO2 nanoflowers on coils using direct heating method for organic pollutant remediationSin Ling Chiam0Swee-Yong Pung1Chee Meng Koe2Fei Yee Yeoh3School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, Malaysia; School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, MalaysiaSchool of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, Malaysia; Corresponding author.School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, MalaysiaSchool of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, MalaysiaThe immobilization of catalysts on supporting substrates for the removal of organic pollutants is a crucial strategy for mitigating catalyst loss during wastewater treatment. This study presented a rapid and cost-effective direct heating method for synthesizing MnO2 nanoflowers on coil substrates for the removal of organic pollutants. Traditional methods often require high power, expensive equipment, and long synthesis times. In contrast, the direct heating approach successfully synthesized MnO2 nanoflowers in just 10 min with a heating power of approximately 40 W·h after the heating power and duration were optimized. These nanoflowers effectively degraded 99% Rhodamine B in 60 min with consistent repeatability. The catalytic mechanisms are attributed to crystal defects in MnO2, which generate electrons to produce H2O2. Mn2+ ions in the acidic solution further dissociate H2O2 molecules into hydroxyl radicals (·OH). The high efficiency of this synthesis method and the excellent reusability of MnO2 nanoflowers highlight their potential as a promising solution for the development of supporting MnO2 catalysts for organic dye removal applications.http://www.sciencedirect.com/science/article/pii/S1674237024000772MnO2 nanostructureSupporting catalystDye removalDirect heatingOrganic pollutants |
| spellingShingle | Sin Ling Chiam Swee-Yong Pung Chee Meng Koe Fei Yee Yeoh Immobilization of MnO2 nanoflowers on coils using direct heating method for organic pollutant remediation Water Science and Engineering MnO2 nanostructure Supporting catalyst Dye removal Direct heating Organic pollutants |
| title | Immobilization of MnO2 nanoflowers on coils using direct heating method for organic pollutant remediation |
| title_full | Immobilization of MnO2 nanoflowers on coils using direct heating method for organic pollutant remediation |
| title_fullStr | Immobilization of MnO2 nanoflowers on coils using direct heating method for organic pollutant remediation |
| title_full_unstemmed | Immobilization of MnO2 nanoflowers on coils using direct heating method for organic pollutant remediation |
| title_short | Immobilization of MnO2 nanoflowers on coils using direct heating method for organic pollutant remediation |
| title_sort | immobilization of mno2 nanoflowers on coils using direct heating method for organic pollutant remediation |
| topic | MnO2 nanostructure Supporting catalyst Dye removal Direct heating Organic pollutants |
| url | http://www.sciencedirect.com/science/article/pii/S1674237024000772 |
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