Synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity
Complicated and strict protocols are followed to tune the size of gold nanoparticles (GNPs) in chemical synthesis methods. In this study, we address the polarity of solvents as a tool for tailoring the size of GNPs in the chemical reduction method. The effects of varying polarity index of the reacti...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Springer Open
2020
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/27802/1/Synthesis%20of%20various%20size%20gold%20nanoparticles%20by%20chemical%20reduction.pdf |
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| author | Hussain, Mohamed Hasaan Noor Fitrah, Abu Bakar Ana Najwa, Mustapa Low, Kim-Fatt Nur Hidayati, Othman Fatmawati, Adam |
| author_facet | Hussain, Mohamed Hasaan Noor Fitrah, Abu Bakar Ana Najwa, Mustapa Low, Kim-Fatt Nur Hidayati, Othman Fatmawati, Adam |
| author_sort | Hussain, Mohamed Hasaan |
| collection | UMP |
| description | Complicated and strict protocols are followed to tune the size of gold nanoparticles (GNPs) in chemical synthesis methods. In this study, we address the polarity of solvents as a tool for tailoring the size of GNPs in the chemical reduction method. The effects of varying polarity index of the reaction medium on synthesizing gold nanoparticles by chemical reduction method have been investigated. Ethanol as a polar solvent, ethanol–water mixture as reaction medium, L-ascorbic acid as reducing agent, and polyvinylpyrrolidone as stabilizer were used to synthesize GNPs. The polarity index of the reaction medium was adjusted by changing the volume ratio of ethanol to water. UV–Vis, dynamic light scattering (DLS), and transmission electron microscopy (TEM) characterizations reveal that the growth of nanoparticles was gradually increased (~ 22 to 219 nm hydrodynamic diameter) with decreasing value of polarity index of the reaction medium (~ 8.2 to 5.2). Furthermore, the high polarity index of the reaction medium produced smaller and spherical nanoparticles, whereas lower polarity index of reaction medium results in bigger size of GNPs with different shapes. These results imply that the mechanistic of the growth, assembly, and aggregation phenomena of ligand or stabilizer-capped GNPs strongly rely on the polarity of solvent molecules. Using the proposed methodology, wide size range of GNPs with different morphology sizes can be synthesized by simply modulating the volume percentage of organic solvent in the reaction medium. |
| first_indexed | 2024-03-06T12:40:59Z |
| format | Article |
| id | UMPir27802 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:40:59Z |
| publishDate | 2020 |
| publisher | Springer Open |
| record_format | dspace |
| spelling | UMPir278022021-01-18T06:42:22Z http://umpir.ump.edu.my/id/eprint/27802/ Synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity Hussain, Mohamed Hasaan Noor Fitrah, Abu Bakar Ana Najwa, Mustapa Low, Kim-Fatt Nur Hidayati, Othman Fatmawati, Adam TP Chemical technology Complicated and strict protocols are followed to tune the size of gold nanoparticles (GNPs) in chemical synthesis methods. In this study, we address the polarity of solvents as a tool for tailoring the size of GNPs in the chemical reduction method. The effects of varying polarity index of the reaction medium on synthesizing gold nanoparticles by chemical reduction method have been investigated. Ethanol as a polar solvent, ethanol–water mixture as reaction medium, L-ascorbic acid as reducing agent, and polyvinylpyrrolidone as stabilizer were used to synthesize GNPs. The polarity index of the reaction medium was adjusted by changing the volume ratio of ethanol to water. UV–Vis, dynamic light scattering (DLS), and transmission electron microscopy (TEM) characterizations reveal that the growth of nanoparticles was gradually increased (~ 22 to 219 nm hydrodynamic diameter) with decreasing value of polarity index of the reaction medium (~ 8.2 to 5.2). Furthermore, the high polarity index of the reaction medium produced smaller and spherical nanoparticles, whereas lower polarity index of reaction medium results in bigger size of GNPs with different shapes. These results imply that the mechanistic of the growth, assembly, and aggregation phenomena of ligand or stabilizer-capped GNPs strongly rely on the polarity of solvent molecules. Using the proposed methodology, wide size range of GNPs with different morphology sizes can be synthesized by simply modulating the volume percentage of organic solvent in the reaction medium. Springer Open 2020-07-02 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/27802/1/Synthesis%20of%20various%20size%20gold%20nanoparticles%20by%20chemical%20reduction.pdf Hussain, Mohamed Hasaan and Noor Fitrah, Abu Bakar and Ana Najwa, Mustapa and Low, Kim-Fatt and Nur Hidayati, Othman and Fatmawati, Adam (2020) Synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity. Nanoscale Research Letters, 15 (1). pp. 1-10. ISSN 1556-276X. (Published) https://doi.org/10.1186/s11671-020-03370-5 https://doi.org/10.1186/s11671-020-03370-5 |
| spellingShingle | TP Chemical technology Hussain, Mohamed Hasaan Noor Fitrah, Abu Bakar Ana Najwa, Mustapa Low, Kim-Fatt Nur Hidayati, Othman Fatmawati, Adam Synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity |
| title | Synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity |
| title_full | Synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity |
| title_fullStr | Synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity |
| title_full_unstemmed | Synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity |
| title_short | Synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity |
| title_sort | synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/27802/1/Synthesis%20of%20various%20size%20gold%20nanoparticles%20by%20chemical%20reduction.pdf |
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