Effect of seaweed Kappaphycus alvarezii in the synthesis of Cu@Cu2O core–shell nanoparticles prepared by chemical reduction method
This study aims is to investigate the influence of different concentrations of Kappaphycus alvarezii (K. alvarezii) for the synthesis of Cu@Cu2O core–shell nanoparticles (NPs) in aqueous solution. The core–shell NPs were prepared by a chemical reduction method using K. alvarezii, CuSO4·5H2O, NaOH, a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Springer
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/37306/ http://psasir.upm.edu.my/id/eprint/37306/1/Effect%20of%20seaweed%20Kappaphycus%20alvarezii%20in%20the%20synthesis%20of%20Cu%40Cu2O%20core%E2%80%93shell%20nanoparticles%20prepared%20by%20chemical%20reduction%20method.pdf |
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| author | Khanehzaei, Hajar Ahmad @ Ayob, Mansor Shameli, Kamyar Ajdari, Zahra Abd Ghani, Maaruf Kalantari, Katayoon |
| author_facet | Khanehzaei, Hajar Ahmad @ Ayob, Mansor Shameli, Kamyar Ajdari, Zahra Abd Ghani, Maaruf Kalantari, Katayoon |
| author_sort | Khanehzaei, Hajar |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study aims is to investigate the influence of different concentrations of Kappaphycus alvarezii (K. alvarezii) for the synthesis of Cu@Cu2O core–shell nanoparticles (NPs) in aqueous solution. The core–shell NPs were prepared by a chemical reduction method using K. alvarezii, CuSO4·5H2O, NaOH, ascorbic acid, hydrazinium hydroxide, as stabilizer, copper precursor, pH moderator, antioxidant and reducing agent under 120°C temperature, respectively. Formation of Cu@Cu2O-NPs was determined by UV–Vis spectroscopy where surface plasmon absorption maxima can be observed at 390-590 nm. The synthesized core–shell NPs were also characterized by X-ray diffraction. Moreover, the morphology and structure of the K. alvarezii/Cu@Cu2O-NPs were investigated by TEM, FESEM and EDXRF. The Fourier transform infrared spectrum suggested the complexation present between K. alvarezii and Cu@Cu2O-NPs. The study clearly showed that using various amounts of K. alvarezii leads to produce different ratios and sizes of Cu@Cu2O NPs. The size of the Cu@Cu2O-NPs decreased as the amount of K. alvarezii was increased. The ratio of Cu@Cu2O increases with the increasing concentration of K. alvarezii until 0.2 wt%. |
| first_indexed | 2025-11-15T09:36:39Z |
| format | Article |
| id | upm-37306 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:36:39Z |
| publishDate | 2015 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-373062018-10-09T07:56:34Z http://psasir.upm.edu.my/id/eprint/37306/ Effect of seaweed Kappaphycus alvarezii in the synthesis of Cu@Cu2O core–shell nanoparticles prepared by chemical reduction method Khanehzaei, Hajar Ahmad @ Ayob, Mansor Shameli, Kamyar Ajdari, Zahra Abd Ghani, Maaruf Kalantari, Katayoon This study aims is to investigate the influence of different concentrations of Kappaphycus alvarezii (K. alvarezii) for the synthesis of Cu@Cu2O core–shell nanoparticles (NPs) in aqueous solution. The core–shell NPs were prepared by a chemical reduction method using K. alvarezii, CuSO4·5H2O, NaOH, ascorbic acid, hydrazinium hydroxide, as stabilizer, copper precursor, pH moderator, antioxidant and reducing agent under 120°C temperature, respectively. Formation of Cu@Cu2O-NPs was determined by UV–Vis spectroscopy where surface plasmon absorption maxima can be observed at 390-590 nm. The synthesized core–shell NPs were also characterized by X-ray diffraction. Moreover, the morphology and structure of the K. alvarezii/Cu@Cu2O-NPs were investigated by TEM, FESEM and EDXRF. The Fourier transform infrared spectrum suggested the complexation present between K. alvarezii and Cu@Cu2O-NPs. The study clearly showed that using various amounts of K. alvarezii leads to produce different ratios and sizes of Cu@Cu2O NPs. The size of the Cu@Cu2O-NPs decreased as the amount of K. alvarezii was increased. The ratio of Cu@Cu2O increases with the increasing concentration of K. alvarezii until 0.2 wt%. Springer 2015-10 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/37306/1/Effect%20of%20seaweed%20Kappaphycus%20alvarezii%20in%20the%20synthesis%20of%20Cu%40Cu2O%20core%E2%80%93shell%20nanoparticles%20prepared%20by%20chemical%20reduction%20method.pdf Khanehzaei, Hajar and Ahmad @ Ayob, Mansor and Shameli, Kamyar and Ajdari, Zahra and Abd Ghani, Maaruf and Kalantari, Katayoon (2015) Effect of seaweed Kappaphycus alvarezii in the synthesis of Cu@Cu2O core–shell nanoparticles prepared by chemical reduction method. Research on Chemical Intermediates, 41 (10). pp. 7363-7376. ISSN 0922-6168; ESSN: 1568-5675 http://link.springer.com/article/10.1007%2Fs11164-014-1817-0 10.1007/s11164-014-1817-0 |
| spellingShingle | Khanehzaei, Hajar Ahmad @ Ayob, Mansor Shameli, Kamyar Ajdari, Zahra Abd Ghani, Maaruf Kalantari, Katayoon Effect of seaweed Kappaphycus alvarezii in the synthesis of Cu@Cu2O core–shell nanoparticles prepared by chemical reduction method |
| title | Effect of seaweed Kappaphycus alvarezii in the synthesis of Cu@Cu2O core–shell nanoparticles prepared by chemical reduction method |
| title_full | Effect of seaweed Kappaphycus alvarezii in the synthesis of Cu@Cu2O core–shell nanoparticles prepared by chemical reduction method |
| title_fullStr | Effect of seaweed Kappaphycus alvarezii in the synthesis of Cu@Cu2O core–shell nanoparticles prepared by chemical reduction method |
| title_full_unstemmed | Effect of seaweed Kappaphycus alvarezii in the synthesis of Cu@Cu2O core–shell nanoparticles prepared by chemical reduction method |
| title_short | Effect of seaweed Kappaphycus alvarezii in the synthesis of Cu@Cu2O core–shell nanoparticles prepared by chemical reduction method |
| title_sort | effect of seaweed kappaphycus alvarezii in the synthesis of cu@cu2o core–shell nanoparticles prepared by chemical reduction method |
| url | http://psasir.upm.edu.my/id/eprint/37306/ http://psasir.upm.edu.my/id/eprint/37306/ http://psasir.upm.edu.my/id/eprint/37306/ http://psasir.upm.edu.my/id/eprint/37306/1/Effect%20of%20seaweed%20Kappaphycus%20alvarezii%20in%20the%20synthesis%20of%20Cu%40Cu2O%20core%E2%80%93shell%20nanoparticles%20prepared%20by%20chemical%20reduction%20method.pdf |