Gold Nanoparticles Synthesis Using Stainless Steel as Solid Reductant: A Critical Overview
Gold nanoparticles (AuNPs) were produced using stainless steel as a solid reductant to assist the synthesis of metal NPs, using HAuCl<sub>4</sub> as a precursor. This method is very easy, quick, and cost-effective, allowing the synthesis of highly stable NPs without additional capping ag...
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| Format: | Article |
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MDPI AG
2020-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/4/622 |
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| author | Margherita Izzi Maria C. Sportelli Luciana Tursellino Gerardo Palazzo Rosaria A. Picca Nicola Cioffi Ángela I. López Lorente |
| author_facet | Margherita Izzi Maria C. Sportelli Luciana Tursellino Gerardo Palazzo Rosaria A. Picca Nicola Cioffi Ángela I. López Lorente |
| author_sort | Margherita Izzi |
| collection | DOAJ |
| description | Gold nanoparticles (AuNPs) were produced using stainless steel as a solid reductant to assist the synthesis of metal NPs, using HAuCl<sub>4</sub> as a precursor. This method is very easy, quick, and cost-effective, allowing the synthesis of highly stable NPs without additional capping agents. However, the reaction mechanism is still under debate. In order to contribute to the investigation of the synthesis of AuNPs using stainless steel, different experimental conditions were tested. Cl<sup>−</sup> concentration, pH of the precursor solution, as well as stainless steel composition were systematically changed. The syntheses were performed recording the open circuit potential to potentiometrically explore the electrochemical properties of the system, under <i>operando</i> conditions. Spectroscopic and morphological characterizations were carried out along with potentiometric monitoring, aiming at correlating the synthesis parameters with the AuNPs characteristics. As a result, an overview of the process features, and of its most reasonable mechanism were obtained. |
| first_indexed | 2024-03-11T10:11:08Z |
| format | Article |
| id | doaj.art-ad64c83fc2f74c268e735bbee18c5f12 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T10:11:08Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-ad64c83fc2f74c268e735bbee18c5f122023-11-16T14:30:12ZengMDPI AGNanomaterials2079-49912020-03-0110462210.3390/nano10040622Gold Nanoparticles Synthesis Using Stainless Steel as Solid Reductant: A Critical OverviewMargherita Izzi0Maria C. Sportelli1Luciana Tursellino2Gerardo Palazzo3Rosaria A. Picca4Nicola Cioffi5Ángela I. López Lorente6Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona, 4, 70126 Bari, ItalyDepartment of Chemistry, University of Bari “Aldo Moro”, Via Orabona, 4, 70126 Bari, ItalyDepartment of Chemistry, University of Bari “Aldo Moro”, Via Orabona, 4, 70126 Bari, ItalyDepartment of Chemistry, University of Bari “Aldo Moro”, Via Orabona, 4, 70126 Bari, ItalyDepartment of Chemistry, University of Bari “Aldo Moro”, Via Orabona, 4, 70126 Bari, ItalyDepartment of Chemistry, University of Bari “Aldo Moro”, Via Orabona, 4, 70126 Bari, ItalyDepartamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071 Córdoba, SpainGold nanoparticles (AuNPs) were produced using stainless steel as a solid reductant to assist the synthesis of metal NPs, using HAuCl<sub>4</sub> as a precursor. This method is very easy, quick, and cost-effective, allowing the synthesis of highly stable NPs without additional capping agents. However, the reaction mechanism is still under debate. In order to contribute to the investigation of the synthesis of AuNPs using stainless steel, different experimental conditions were tested. Cl<sup>−</sup> concentration, pH of the precursor solution, as well as stainless steel composition were systematically changed. The syntheses were performed recording the open circuit potential to potentiometrically explore the electrochemical properties of the system, under <i>operando</i> conditions. Spectroscopic and morphological characterizations were carried out along with potentiometric monitoring, aiming at correlating the synthesis parameters with the AuNPs characteristics. As a result, an overview of the process features, and of its most reasonable mechanism were obtained.https://www.mdpi.com/2079-4991/10/4/622gold nanoparticlestainless steel corrosionplasmonic particleaqueous metal colloid |
| spellingShingle | Margherita Izzi Maria C. Sportelli Luciana Tursellino Gerardo Palazzo Rosaria A. Picca Nicola Cioffi Ángela I. López Lorente Gold Nanoparticles Synthesis Using Stainless Steel as Solid Reductant: A Critical Overview Nanomaterials gold nanoparticle stainless steel corrosion plasmonic particle aqueous metal colloid |
| title | Gold Nanoparticles Synthesis Using Stainless Steel as Solid Reductant: A Critical Overview |
| title_full | Gold Nanoparticles Synthesis Using Stainless Steel as Solid Reductant: A Critical Overview |
| title_fullStr | Gold Nanoparticles Synthesis Using Stainless Steel as Solid Reductant: A Critical Overview |
| title_full_unstemmed | Gold Nanoparticles Synthesis Using Stainless Steel as Solid Reductant: A Critical Overview |
| title_short | Gold Nanoparticles Synthesis Using Stainless Steel as Solid Reductant: A Critical Overview |
| title_sort | gold nanoparticles synthesis using stainless steel as solid reductant a critical overview |
| topic | gold nanoparticle stainless steel corrosion plasmonic particle aqueous metal colloid |
| url | https://www.mdpi.com/2079-4991/10/4/622 |
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