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Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection

Conjugation of mercaptopropionic acid (MPA) as a thiol-capping agent linked with gold nanoparticles (AuNPs) enables colorimetric heavy metal detection. The synthesized AuNPs followed by thiol-capped AuNPs shows a color changes from red wine to deep color of gold nanoparticles. The quantitative measu...

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Main Authors: Alang Ahmad, Shahrul Ainliah, Mohd Saufi, Nik Muhammad Irfan Hakimi
Format: Conference or Workshop Item
Language:English
Published: 2017
Online Access:http://psasir.upm.edu.my/id/eprint/64421/1/MST%20poster%20111117%2020.pdf
http://psasir.upm.edu.my/id/eprint/64421/
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spelling my.upm.eprints.644212018-07-05T09:31:21Z http://psasir.upm.edu.my/id/eprint/64421/ Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection Alang Ahmad, Shahrul Ainliah Mohd Saufi, Nik Muhammad Irfan Hakimi Conjugation of mercaptopropionic acid (MPA) as a thiol-capping agent linked with gold nanoparticles (AuNPs) enables colorimetric heavy metal detection. The synthesized AuNPs followed by thiol-capped AuNPs shows a color changes from red wine to deep color of gold nanoparticles. The quantitative measurement was performed with UV-Vis absorption spectrum, indicating a sharp peak centered at range of 520 nm to 540 nm shifted to 561.50 nm upon linked capping agent. Fourier transform infrared (FT-IR) analysis further confirmed the presence of ligand capped on AuNPs. For this project, thiol-capped AuNPs was used to detect Hg (II). The color changes were observed as the various concentration of Hg (II). Further characterization was performed with UVVis, showing the shifting of the maximum absorption peak. This indicates the method used to determine Hg (II) was simple and fast which can detect as low as 0.1 mM. 2017 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/64421/1/MST%20poster%20111117%2020.pdf Alang Ahmad, Shahrul Ainliah and Mohd Saufi, Nik Muhammad Irfan Hakimi (2017) Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection. In: 5th International Symposium on Applied Engineering and Sciences (SAES2017), 14-15 Nov. 2017, Universiti Putra Malaysia. (p. 20).
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Conjugation of mercaptopropionic acid (MPA) as a thiol-capping agent linked with gold nanoparticles (AuNPs) enables colorimetric heavy metal detection. The synthesized AuNPs followed by thiol-capped AuNPs shows a color changes from red wine to deep color of gold nanoparticles. The quantitative measurement was performed with UV-Vis absorption spectrum, indicating a sharp peak centered at range of 520 nm to 540 nm shifted to 561.50 nm upon linked capping agent. Fourier transform infrared (FT-IR) analysis further confirmed the presence of ligand capped on AuNPs. For this project, thiol-capped AuNPs was used to detect Hg (II). The color changes were observed as the various concentration of Hg (II). Further characterization was performed with UVVis, showing the shifting of the maximum absorption peak. This indicates the method used to determine Hg (II) was simple and fast which can detect as low as 0.1 mM.
format Conference or Workshop Item
author Alang Ahmad, Shahrul Ainliah
Mohd Saufi, Nik Muhammad Irfan Hakimi
spellingShingle Alang Ahmad, Shahrul Ainliah
Mohd Saufi, Nik Muhammad Irfan Hakimi
Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection
author_facet Alang Ahmad, Shahrul Ainliah
Mohd Saufi, Nik Muhammad Irfan Hakimi
author_sort Alang Ahmad, Shahrul Ainliah
title Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection
title_short Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection
title_full Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection
title_fullStr Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection
title_full_unstemmed Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection
title_sort thiol capped gold nanoparticles-based colorimetric sensor for mercury detection
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/64421/1/MST%20poster%20111117%2020.pdf
http://psasir.upm.edu.my/id/eprint/64421/
_version_ 1643838018247720960
score 13.211869

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