Cu2O nanoparticles for the degradation of methyl parathion
Methyl parathion (MP) is one of the most neurotoxic pesticides. An inexpensive and reliable one-step degradation method of MP was achieved through an aqueous suspension of copper(I) oxide nanoparticles (NPs). Three different NPs sizes (16, 29 and 45 nm), determined with X-ray diffraction (XRD) and h...
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2020-10-01
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| Series: | Beilstein Journal of Nanotechnology |
| Subjects: | |
| Online Access: | https://doi.org/10.3762/bjnano.11.137 |
| _version_ | 1819296440688574464 |
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| author | Juan Rizo David Díaz Benito Reyes-Trejo M. Josefina Arellano-Jiménez |
| author_facet | Juan Rizo David Díaz Benito Reyes-Trejo M. Josefina Arellano-Jiménez |
| author_sort | Juan Rizo |
| collection | DOAJ |
| description | Methyl parathion (MP) is one of the most neurotoxic pesticides. An inexpensive and reliable one-step degradation method of MP was achieved through an aqueous suspension of copper(I) oxide nanoparticles (NPs). Three different NPs sizes (16, 29 and 45 nm), determined with X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM), were synthesized using a modified Benedict’s reagent. 1H nuclear magnetic resonance (NMR) results show that the hydrolytic degradation of MP leads to the formation of 4-nitrophenol (4-NPh) as the main product. While the P=S bond of MP becomes P=O, confirmed by 31P NMR. Although Cu2O is a widely known photocatalyst, the degradation of methyl parathion was associated to the surface basicity of Cu2O NPs. Indirect evidence for the basicity of Cu2O NPs was achieved through UV–vis absorption of 4-NPh. Likewise, it was shown that the surface basicity increases with decreasing nanoparticle size. The presence of CuCO3 on the surface of Cu2O, identified using X-ray photoelectron spectroscopy (XPS), passivates its surface and consequently diminishes the degradation of MP. |
| first_indexed | 2024-12-24T04:58:09Z |
| format | Article |
| id | doaj.art-1c029c0e22894d1d87c6ee88f41ac2f9 |
| institution | Directory Open Access Journal |
| issn | 2190-4286 |
| language | English |
| last_indexed | 2024-12-24T04:58:09Z |
| publishDate | 2020-10-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj.art-1c029c0e22894d1d87c6ee88f41ac2f92022-12-21T17:14:19ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862020-10-011111546155510.3762/bjnano.11.1372190-4286-11-137Cu2O nanoparticles for the degradation of methyl parathionJuan Rizo0David Díaz1Benito Reyes-Trejo2M. Josefina Arellano-Jiménez3Facultad de Química, Universidad Nacional Autónoma de México, Coyoacán 04510, MéxicoFacultad de Química, Universidad Nacional Autónoma de México, Coyoacán 04510, MéxicoLaboratorio de Productos Naturales, Área de Química, Universidad Autónoma Chapingo, Texcoco 56230, MéxicoMaterial Science and Engineering, The University of Texas at Dallas, Texas 75080, United StatesMethyl parathion (MP) is one of the most neurotoxic pesticides. An inexpensive and reliable one-step degradation method of MP was achieved through an aqueous suspension of copper(I) oxide nanoparticles (NPs). Three different NPs sizes (16, 29 and 45 nm), determined with X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM), were synthesized using a modified Benedict’s reagent. 1H nuclear magnetic resonance (NMR) results show that the hydrolytic degradation of MP leads to the formation of 4-nitrophenol (4-NPh) as the main product. While the P=S bond of MP becomes P=O, confirmed by 31P NMR. Although Cu2O is a widely known photocatalyst, the degradation of methyl parathion was associated to the surface basicity of Cu2O NPs. Indirect evidence for the basicity of Cu2O NPs was achieved through UV–vis absorption of 4-NPh. Likewise, it was shown that the surface basicity increases with decreasing nanoparticle size. The presence of CuCO3 on the surface of Cu2O, identified using X-ray photoelectron spectroscopy (XPS), passivates its surface and consequently diminishes the degradation of MP.https://doi.org/10.3762/bjnano.11.137copper(i) oxide (cu2o)cu2o nanoparticlesdegradationmethyl parathionsurface basicity |
| spellingShingle | Juan Rizo David Díaz Benito Reyes-Trejo M. Josefina Arellano-Jiménez Cu2O nanoparticles for the degradation of methyl parathion Beilstein Journal of Nanotechnology copper(i) oxide (cu2o) cu2o nanoparticles degradation methyl parathion surface basicity |
| title | Cu2O nanoparticles for the degradation of methyl parathion |
| title_full | Cu2O nanoparticles for the degradation of methyl parathion |
| title_fullStr | Cu2O nanoparticles for the degradation of methyl parathion |
| title_full_unstemmed | Cu2O nanoparticles for the degradation of methyl parathion |
| title_short | Cu2O nanoparticles for the degradation of methyl parathion |
| title_sort | cu2o nanoparticles for the degradation of methyl parathion |
| topic | copper(i) oxide (cu2o) cu2o nanoparticles degradation methyl parathion surface basicity |
| url | https://doi.org/10.3762/bjnano.11.137 |
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