Photocatalytic activity of magnetic core-shell CoFe2O4@ZnO nanoparticles for purification of methylene blue
Magnetic core–shell CoFe _2 O _4 @ZnO nanoparticles have been successfully synthesized by using coprecipitation method to provide easy separated nanomaterials and high photocatalytic activity performance. Core–shell nanoparticles with various CoFe _2 O _4 -to-ZnO molar ratio (1:2, 1:3, 1:4, 1:5) hav...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2020-01-01
|
| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/abafd1 |
| _version_ | 1827868664333860864 |
|---|---|
| author | Edi Suharyadi Afifah Muzakki Astrie Nofrianti Nurul Imani Istiqomah Takeshi Kato Satoshi Iwata |
| author_facet | Edi Suharyadi Afifah Muzakki Astrie Nofrianti Nurul Imani Istiqomah Takeshi Kato Satoshi Iwata |
| author_sort | Edi Suharyadi |
| collection | DOAJ |
| description | Magnetic core–shell CoFe _2 O _4 @ZnO nanoparticles have been successfully synthesized by using coprecipitation method to provide easy separated nanomaterials and high photocatalytic activity performance. Core–shell nanoparticles with various CoFe _2 O _4 -to-ZnO molar ratio (1:2, 1:3, 1:4, 1:5) have been investigated over x-ray diffraction (XRD), transmission electron microscopy (TEM), UV-visible spectroscopy, and vibrating sample magnetometer. XRD spectra confirm the cubic spinel ferrite phase structure of CoFe _2 O _4 and the hexagonal wurtzite phase of ZnO. The crystallite size is found within the range of 14.9–20.6 nm. TEM measurement confirms the good crystallinity of the samples. The magnetic hysteresis shows that CoFe _2 O _4 @ZnO has high saturation magnetization of about 30 emu g ^−1 and coercivity of about 300 Oe. Photocatalytic investigation was carried out using methylene blue (MB) under UV irradiation. Our result yields the enhancement of MB degradation as ZnO content increases. The maximum photodegradation achieved by the core–shell nanoparticles is 57.2%, 60.5%, 65.5%, and 78.3% for molar ratio of 1:2, 1:3, 1:4, and 1:5, respectively. The enhancement of MB degradation can be attributed to the formation of internal structure between CoFe _2 O _4 and ZnO in the form of heterojunction structure. The magnetic properties of core–shell lead to the easy separation between the magnetic core–shell nanoparticles and the final degraded solution by permanent magnet. |
| first_indexed | 2024-03-12T15:35:35Z |
| format | Article |
| id | doaj.art-a0558b48bd3c42c8890bf2a33c624265 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:35:35Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-a0558b48bd3c42c8890bf2a33c6242652023-08-09T16:15:48ZengIOP PublishingMaterials Research Express2053-15912020-01-017808501310.1088/2053-1591/abafd1Photocatalytic activity of magnetic core-shell CoFe2O4@ZnO nanoparticles for purification of methylene blueEdi Suharyadi0https://orcid.org/0000-0002-9845-3707Afifah Muzakki1Astrie Nofrianti2Nurul Imani Istiqomah3Takeshi Kato4Satoshi Iwata5Departement of Physics, Universitas Gadjah Mada , Yogyakarta, IndonesiaDepartement of Physics, Universitas Gadjah Mada , Yogyakarta, IndonesiaDepartement of Physics, Universitas Gadjah Mada , Yogyakarta, IndonesiaDepartement of Physics, Universitas Gadjah Mada , Yogyakarta, IndonesiaInstitute of Materials and Systems for Sustainability, Nagoya University , Nagoya, JapanInstitute of Materials and Systems for Sustainability, Nagoya University , Nagoya, JapanMagnetic core–shell CoFe _2 O _4 @ZnO nanoparticles have been successfully synthesized by using coprecipitation method to provide easy separated nanomaterials and high photocatalytic activity performance. Core–shell nanoparticles with various CoFe _2 O _4 -to-ZnO molar ratio (1:2, 1:3, 1:4, 1:5) have been investigated over x-ray diffraction (XRD), transmission electron microscopy (TEM), UV-visible spectroscopy, and vibrating sample magnetometer. XRD spectra confirm the cubic spinel ferrite phase structure of CoFe _2 O _4 and the hexagonal wurtzite phase of ZnO. The crystallite size is found within the range of 14.9–20.6 nm. TEM measurement confirms the good crystallinity of the samples. The magnetic hysteresis shows that CoFe _2 O _4 @ZnO has high saturation magnetization of about 30 emu g ^−1 and coercivity of about 300 Oe. Photocatalytic investigation was carried out using methylene blue (MB) under UV irradiation. Our result yields the enhancement of MB degradation as ZnO content increases. The maximum photodegradation achieved by the core–shell nanoparticles is 57.2%, 60.5%, 65.5%, and 78.3% for molar ratio of 1:2, 1:3, 1:4, and 1:5, respectively. The enhancement of MB degradation can be attributed to the formation of internal structure between CoFe _2 O _4 and ZnO in the form of heterojunction structure. The magnetic properties of core–shell lead to the easy separation between the magnetic core–shell nanoparticles and the final degraded solution by permanent magnet.https://doi.org/10.1088/2053-1591/abafd1CoFe2O4core-shellmagnetic nanoparticlesphotocatalysisZnO |
| spellingShingle | Edi Suharyadi Afifah Muzakki Astrie Nofrianti Nurul Imani Istiqomah Takeshi Kato Satoshi Iwata Photocatalytic activity of magnetic core-shell CoFe2O4@ZnO nanoparticles for purification of methylene blue Materials Research Express CoFe2O4 core-shell magnetic nanoparticles photocatalysis ZnO |
| title | Photocatalytic activity of magnetic core-shell CoFe2O4@ZnO nanoparticles for purification of methylene blue |
| title_full | Photocatalytic activity of magnetic core-shell CoFe2O4@ZnO nanoparticles for purification of methylene blue |
| title_fullStr | Photocatalytic activity of magnetic core-shell CoFe2O4@ZnO nanoparticles for purification of methylene blue |
| title_full_unstemmed | Photocatalytic activity of magnetic core-shell CoFe2O4@ZnO nanoparticles for purification of methylene blue |
| title_short | Photocatalytic activity of magnetic core-shell CoFe2O4@ZnO nanoparticles for purification of methylene blue |
| title_sort | photocatalytic activity of magnetic core shell cofe2o4 zno nanoparticles for purification of methylene blue |
| topic | CoFe2O4 core-shell magnetic nanoparticles photocatalysis ZnO |
| url | https://doi.org/10.1088/2053-1591/abafd1 |
| work_keys_str_mv | AT edisuharyadi photocatalyticactivityofmagneticcoreshellcofe2o4znonanoparticlesforpurificationofmethyleneblue AT afifahmuzakki photocatalyticactivityofmagneticcoreshellcofe2o4znonanoparticlesforpurificationofmethyleneblue AT astrienofrianti photocatalyticactivityofmagneticcoreshellcofe2o4znonanoparticlesforpurificationofmethyleneblue AT nurulimaniistiqomah photocatalyticactivityofmagneticcoreshellcofe2o4znonanoparticlesforpurificationofmethyleneblue AT takeshikato photocatalyticactivityofmagneticcoreshellcofe2o4znonanoparticlesforpurificationofmethyleneblue AT satoshiiwata photocatalyticactivityofmagneticcoreshellcofe2o4znonanoparticlesforpurificationofmethyleneblue |