Tailoring ZnO nanorods for efficient photocatalytic production of H2O2 from water without sacrificial agents: A study on length optimization
In this study, we investigated the optimal length of zinc oxide nanorods (ZnO NRs) for the production of photocatalytic hydrogen peroxide (H2O2) using a hydrothermal method at 150 °C with reaction times ranging from 2 to 12 h. The study found that the size of the crystals increased when the reaction...
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| Language: | English |
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Elsevier
2024-05-01
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| Series: | Results in Surfaces and Interfaces |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666845924000333 |
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| author | Mostafa M. Elkady M.S. Abd El-Sadek Hassan M. Salman Safaa El-Nahas |
| author_facet | Mostafa M. Elkady M.S. Abd El-Sadek Hassan M. Salman Safaa El-Nahas |
| author_sort | Mostafa M. Elkady |
| collection | DOAJ |
| description | In this study, we investigated the optimal length of zinc oxide nanorods (ZnO NRs) for the production of photocatalytic hydrogen peroxide (H2O2) using a hydrothermal method at 150 °C with reaction times ranging from 2 to 12 h. The study found that the size of the crystals increased when the reaction duration was extended, resulting in an increase in the size from 26 to 48 nm. SEM measurements indicated that ZnO exhibited longitudinal growth along the c-axis, increasing the nanorod length from 1 μm to 3.5 μm. The bandgaps of the ZnO NRs were between 3.21 and 3.25 eV. The optimal conditions for H2O2 production were identified to be 10 min of sonication and 15 min of UV illumination. The generation of H2O2 increased with the dosage of ZnO, ranging from 0.01 to 0.3 g/20 ml. The highest H2O2 production was attained by employing ZnO NRs at 1.6 μm in length with 49 mgL−1 Under UV irradiation and 28 mgL−1 under sonication irradiation. This study offers new perspectives for the design and production of H2O2 using ZnO NRs of a certain length, which may be beneficial for environmental remediation and energy generation. |
| first_indexed | 2024-04-24T19:48:56Z |
| format | Article |
| id | doaj.art-d7771a30417641e79ee408ac2712544a |
| institution | Directory Open Access Journal |
| issn | 2666-8459 |
| language | English |
| last_indexed | 2024-04-24T19:48:56Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Surfaces and Interfaces |
| spelling | doaj.art-d7771a30417641e79ee408ac2712544a2024-03-25T04:18:07ZengElsevierResults in Surfaces and Interfaces2666-84592024-05-0115100213Tailoring ZnO nanorods for efficient photocatalytic production of H2O2 from water without sacrificial agents: A study on length optimizationMostafa M. Elkady0M.S. Abd El-Sadek1Hassan M. Salman2Safaa El-Nahas3Chemistry Department, Faculty of Science, South Valley University, Qena, 83523, Egypt; Corresponding author. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, 816 8580, Japan.Nanomaterials Lab., Physics Department, Faculty of Science, South Valley University, Qena, 83523, Egypt; Physics Department, Faculty of Science, Galala University, Galala City, Suez, 43511, EgyptChemistry Department, Faculty of Science, South Valley University, Qena, 83523, EgyptChemistry Department, Faculty of Science, South Valley University, Qena, 83523, EgyptIn this study, we investigated the optimal length of zinc oxide nanorods (ZnO NRs) for the production of photocatalytic hydrogen peroxide (H2O2) using a hydrothermal method at 150 °C with reaction times ranging from 2 to 12 h. The study found that the size of the crystals increased when the reaction duration was extended, resulting in an increase in the size from 26 to 48 nm. SEM measurements indicated that ZnO exhibited longitudinal growth along the c-axis, increasing the nanorod length from 1 μm to 3.5 μm. The bandgaps of the ZnO NRs were between 3.21 and 3.25 eV. The optimal conditions for H2O2 production were identified to be 10 min of sonication and 15 min of UV illumination. The generation of H2O2 increased with the dosage of ZnO, ranging from 0.01 to 0.3 g/20 ml. The highest H2O2 production was attained by employing ZnO NRs at 1.6 μm in length with 49 mgL−1 Under UV irradiation and 28 mgL−1 under sonication irradiation. This study offers new perspectives for the design and production of H2O2 using ZnO NRs of a certain length, which may be beneficial for environmental remediation and energy generation.http://www.sciencedirect.com/science/article/pii/S2666845924000333Zinc oxideHydrogen peroxidePhotocatalysisNanorods |
| spellingShingle | Mostafa M. Elkady M.S. Abd El-Sadek Hassan M. Salman Safaa El-Nahas Tailoring ZnO nanorods for efficient photocatalytic production of H2O2 from water without sacrificial agents: A study on length optimization Results in Surfaces and Interfaces Zinc oxide Hydrogen peroxide Photocatalysis Nanorods |
| title | Tailoring ZnO nanorods for efficient photocatalytic production of H2O2 from water without sacrificial agents: A study on length optimization |
| title_full | Tailoring ZnO nanorods for efficient photocatalytic production of H2O2 from water without sacrificial agents: A study on length optimization |
| title_fullStr | Tailoring ZnO nanorods for efficient photocatalytic production of H2O2 from water without sacrificial agents: A study on length optimization |
| title_full_unstemmed | Tailoring ZnO nanorods for efficient photocatalytic production of H2O2 from water without sacrificial agents: A study on length optimization |
| title_short | Tailoring ZnO nanorods for efficient photocatalytic production of H2O2 from water without sacrificial agents: A study on length optimization |
| title_sort | tailoring zno nanorods for efficient photocatalytic production of h2o2 from water without sacrificial agents a study on length optimization |
| topic | Zinc oxide Hydrogen peroxide Photocatalysis Nanorods |
| url | http://www.sciencedirect.com/science/article/pii/S2666845924000333 |
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