A photocatalytic and electrochemical study of gold nanoparticles synthesized by a green approach
Quasi-spherical gold nanoparticles mixed with a controlled amount of gold nano triangles were obtained through a green chemical method using leaf extract of Loeselia mexicana . Moreover, the influence of the extract and HAuCl _4 solution concentration in the morphology of the nanoparticles was studi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ab61bd |
| _version_ | 1797747062012379136 |
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| author | R Herrero-Calvillo A Santoveña-Uribe R Esparza G Rosas |
| author_facet | R Herrero-Calvillo A Santoveña-Uribe R Esparza G Rosas |
| author_sort | R Herrero-Calvillo |
| collection | DOAJ |
| description | Quasi-spherical gold nanoparticles mixed with a controlled amount of gold nano triangles were obtained through a green chemical method using leaf extract of Loeselia mexicana . Moreover, the influence of the extract and HAuCl _4 solution concentration in the morphology of the nanoparticles was studied. The nanoparticle preparation was performed by varying the concentration of the extract and precursor salt. The catalytic activity of the as-prepared nanoparticles was studied by the reduction of methylene blue, rhodamine B, and gentian violet organic dyes. Also, cyclic voltammetry profiles were obtained in order to analyze the electrochemical response of the nanoparticles. The morphology and structural characterization were analyzed by UV–vis, SEM, TEM, FTIR, and XRD. The SEM analysis reveals gold nanoparticles with spherical and triangular morphologies. The UV–vis spectra revealed that the extract concentration influenced the morphology and amount of the obtained gold nanoparticles. The XRD and TEM analysis showed that gold nanoparticles presented a face-centered cubic lattice structure. The cyclic voltammetry analysis confirms a high-sensitivity electrochemical response and stability corresponding to the gold nano triangles. Finally, the presence of gold nano triangles shapes influenced the efficiency of the degradation of the dyes due to their high specific surface area. |
| first_indexed | 2024-03-12T15:45:46Z |
| format | Article |
| id | doaj.art-23ec74f9751e4acdaf24a0c0497f337c |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:45:46Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-23ec74f9751e4acdaf24a0c0497f337c2023-08-09T15:26:11ZengIOP PublishingMaterials Research Express2053-15912020-01-017101501910.1088/2053-1591/ab61bdA photocatalytic and electrochemical study of gold nanoparticles synthesized by a green approachR Herrero-Calvillo0A Santoveña-Uribe1R Esparza2G Rosas3https://orcid.org/0000-0002-6120-8222Instituto de Investigación en Metalurgia y Materiales, UMSNH, edificio U, Ciudad Universitaria , C P 58030, Morelia, Michoacán, MéxicoCentro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México , Santiago de Querétaro, Qro., MéxicoCentro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México , Santiago de Querétaro, Qro., MéxicoInstituto de Investigación en Metalurgia y Materiales, UMSNH, edificio U, Ciudad Universitaria , C P 58030, Morelia, Michoacán, MéxicoQuasi-spherical gold nanoparticles mixed with a controlled amount of gold nano triangles were obtained through a green chemical method using leaf extract of Loeselia mexicana . Moreover, the influence of the extract and HAuCl _4 solution concentration in the morphology of the nanoparticles was studied. The nanoparticle preparation was performed by varying the concentration of the extract and precursor salt. The catalytic activity of the as-prepared nanoparticles was studied by the reduction of methylene blue, rhodamine B, and gentian violet organic dyes. Also, cyclic voltammetry profiles were obtained in order to analyze the electrochemical response of the nanoparticles. The morphology and structural characterization were analyzed by UV–vis, SEM, TEM, FTIR, and XRD. The SEM analysis reveals gold nanoparticles with spherical and triangular morphologies. The UV–vis spectra revealed that the extract concentration influenced the morphology and amount of the obtained gold nanoparticles. The XRD and TEM analysis showed that gold nanoparticles presented a face-centered cubic lattice structure. The cyclic voltammetry analysis confirms a high-sensitivity electrochemical response and stability corresponding to the gold nano triangles. Finally, the presence of gold nano triangles shapes influenced the efficiency of the degradation of the dyes due to their high specific surface area.https://doi.org/10.1088/2053-1591/ab61bdgreen synthesisgold nanoparticlesgold nanotrianglescatalytic activityelectrochemistrystructural characterization |
| spellingShingle | R Herrero-Calvillo A Santoveña-Uribe R Esparza G Rosas A photocatalytic and electrochemical study of gold nanoparticles synthesized by a green approach Materials Research Express green synthesis gold nanoparticles gold nanotriangles catalytic activity electrochemistry structural characterization |
| title | A photocatalytic and electrochemical study of gold nanoparticles synthesized by a green approach |
| title_full | A photocatalytic and electrochemical study of gold nanoparticles synthesized by a green approach |
| title_fullStr | A photocatalytic and electrochemical study of gold nanoparticles synthesized by a green approach |
| title_full_unstemmed | A photocatalytic and electrochemical study of gold nanoparticles synthesized by a green approach |
| title_short | A photocatalytic and electrochemical study of gold nanoparticles synthesized by a green approach |
| title_sort | photocatalytic and electrochemical study of gold nanoparticles synthesized by a green approach |
| topic | green synthesis gold nanoparticles gold nanotriangles catalytic activity electrochemistry structural characterization |
| url | https://doi.org/10.1088/2053-1591/ab61bd |
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