Green Synthesis of Homogeneous Gold Nanoparticles Using <i>Sargassum</i> spp. Extracts and Their Enhanced Catalytic Activity for Organic Dyes
<i>Sargassum</i> species-based extracts were used to carry out the synthesis of homogeneous gold nanoparticles. Various techniques were used to determine the characteristics and composition of the nanoparticles. The UV-Vis results showed that the 50% water/ethanol extract had the most re...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Toxics |
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| Online Access: | https://www.mdpi.com/2305-6304/9/11/280 |
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| author | J. Luis López-Miranda Gustavo A. Molina Rodrigo Esparza Marlen Alexis González-Reyna Rodolfo Silva Miriam Estévez |
| author_facet | J. Luis López-Miranda Gustavo A. Molina Rodrigo Esparza Marlen Alexis González-Reyna Rodolfo Silva Miriam Estévez |
| author_sort | J. Luis López-Miranda |
| collection | DOAJ |
| description | <i>Sargassum</i> species-based extracts were used to carry out the synthesis of homogeneous gold nanoparticles. Various techniques were used to determine the characteristics and composition of the nanoparticles. The UV-Vis results showed that the 50% water/ethanol extract had the most reducing agents and stabilizers. Therefore, this type of extract was used to synthesize nanoparticles and for their subsequent characterization. Crystallinity and crystal size were evaluated using X-ray diffraction. Size and morphology were analyzed using scanning electron microscopy, showing that the gold nanoparticles were mostly spherical, with a size range of 15–30 nm. The catalytic activity of the gold nanoparticles was evaluated through the degradation of organic dyes: methylene blue, methyl orange, and methyl red. The degradation rates were different, depending on the nature of each dye, the simplest to degrade was methylene blue and methyl red was the most difficult to degrade. The results indicated that the use of <i>Sargassum</i> spp. for the synthesis of gold nanoparticles has potential in the remediation of water that is contaminated with organic dyes. Moreover, given the recent serious environmental and economic problems caused by the overpopulation of <i>Sargassum</i> spp. in the Mexican Caribbean, the findings hold promise for their practical and sustainable use in the synthesis of nanomaterials. |
| first_indexed | 2024-03-10T05:01:10Z |
| format | Article |
| id | doaj.art-67b11ed561994bd79381f2ad4fd227c7 |
| institution | Directory Open Access Journal |
| issn | 2305-6304 |
| language | English |
| last_indexed | 2024-03-10T05:01:10Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxics |
| spelling | doaj.art-67b11ed561994bd79381f2ad4fd227c72023-11-23T01:47:39ZengMDPI AGToxics2305-63042021-10-0191128010.3390/toxics9110280Green Synthesis of Homogeneous Gold Nanoparticles Using <i>Sargassum</i> spp. Extracts and Their Enhanced Catalytic Activity for Organic DyesJ. Luis López-Miranda0Gustavo A. Molina1Rodrigo Esparza2Marlen Alexis González-Reyna3Rodolfo Silva4Miriam Estévez5Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, MexicoCentro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, MexicoCentro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, MexicoCentro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, MexicoInstituto de Ingeniería, Universidad Nacional Autónoma de México, Edificio 17, Ciudad Universitaria, Coyoacán, Mexico City 04510, MexicoCentro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico<i>Sargassum</i> species-based extracts were used to carry out the synthesis of homogeneous gold nanoparticles. Various techniques were used to determine the characteristics and composition of the nanoparticles. The UV-Vis results showed that the 50% water/ethanol extract had the most reducing agents and stabilizers. Therefore, this type of extract was used to synthesize nanoparticles and for their subsequent characterization. Crystallinity and crystal size were evaluated using X-ray diffraction. Size and morphology were analyzed using scanning electron microscopy, showing that the gold nanoparticles were mostly spherical, with a size range of 15–30 nm. The catalytic activity of the gold nanoparticles was evaluated through the degradation of organic dyes: methylene blue, methyl orange, and methyl red. The degradation rates were different, depending on the nature of each dye, the simplest to degrade was methylene blue and methyl red was the most difficult to degrade. The results indicated that the use of <i>Sargassum</i> spp. for the synthesis of gold nanoparticles has potential in the remediation of water that is contaminated with organic dyes. Moreover, given the recent serious environmental and economic problems caused by the overpopulation of <i>Sargassum</i> spp. in the Mexican Caribbean, the findings hold promise for their practical and sustainable use in the synthesis of nanomaterials.https://www.mdpi.com/2305-6304/9/11/280gold nanoparticlesgreen synthesis<i>Sargassum</i> spp.organic dyewater treatment |
| spellingShingle | J. Luis López-Miranda Gustavo A. Molina Rodrigo Esparza Marlen Alexis González-Reyna Rodolfo Silva Miriam Estévez Green Synthesis of Homogeneous Gold Nanoparticles Using <i>Sargassum</i> spp. Extracts and Their Enhanced Catalytic Activity for Organic Dyes Toxics gold nanoparticles green synthesis <i>Sargassum</i> spp. organic dye water treatment |
| title | Green Synthesis of Homogeneous Gold Nanoparticles Using <i>Sargassum</i> spp. Extracts and Their Enhanced Catalytic Activity for Organic Dyes |
| title_full | Green Synthesis of Homogeneous Gold Nanoparticles Using <i>Sargassum</i> spp. Extracts and Their Enhanced Catalytic Activity for Organic Dyes |
| title_fullStr | Green Synthesis of Homogeneous Gold Nanoparticles Using <i>Sargassum</i> spp. Extracts and Their Enhanced Catalytic Activity for Organic Dyes |
| title_full_unstemmed | Green Synthesis of Homogeneous Gold Nanoparticles Using <i>Sargassum</i> spp. Extracts and Their Enhanced Catalytic Activity for Organic Dyes |
| title_short | Green Synthesis of Homogeneous Gold Nanoparticles Using <i>Sargassum</i> spp. Extracts and Their Enhanced Catalytic Activity for Organic Dyes |
| title_sort | green synthesis of homogeneous gold nanoparticles using i sargassum i spp extracts and their enhanced catalytic activity for organic dyes |
| topic | gold nanoparticles green synthesis <i>Sargassum</i> spp. organic dye water treatment |
| url | https://www.mdpi.com/2305-6304/9/11/280 |
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