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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...

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Main Authors: Hussain, Mohamed Hasaan, Noor Fitrah, Abu Bakar, Ana Najwa, Mustapa, Low, Kim-Fatt, Nur Hidayati, Othman, Fatmawati, Adam
Format: Article
Language:English
Published: Springer Open 2020
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/27802/1/Synthesis%20of%20various%20size%20gold%20nanoparticles%20by%20chemical%20reduction.pdf
http://umpir.ump.edu.my/id/eprint/27802/
https://doi.org/10.1186/s11671-020-03370-5
https://doi.org/10.1186/s11671-020-03370-5
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spelling my.ump.umpir.278022021-01-18T06:42:22Z 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 https://doi.org/10.1186/s11671-020-03370-5 https://doi.org/10.1186/s11671-020-03370-5
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
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
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.
format Article
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
title 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_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_sort synthesis of various size gold nanoparticles by chemical reduction method with different solvent polarity
publisher Springer Open
publishDate 2020
url http://umpir.ump.edu.my/id/eprint/27802/1/Synthesis%20of%20various%20size%20gold%20nanoparticles%20by%20chemical%20reduction.pdf
http://umpir.ump.edu.my/id/eprint/27802/
https://doi.org/10.1186/s11671-020-03370-5
https://doi.org/10.1186/s11671-020-03370-5
_version_ 1690371127825661952
score 13.211869

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