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...
| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/64421/ http://psasir.upm.edu.my/id/eprint/64421/1/MST%20poster%20111117%2020.pdf |
| _version_ | 1848854997463203840 |
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| author | Alang Ahmad, Shahrul Ainliah Mohd Saufi, Nik Muhammad Irfan Hakimi |
| author_facet | Alang Ahmad, Shahrul Ainliah Mohd Saufi, Nik Muhammad Irfan Hakimi |
| author_sort | Alang Ahmad, Shahrul Ainliah |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T11:18:45Z |
| format | Conference or Workshop Item |
| id | upm-64421 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:18:45Z |
| publishDate | 2017 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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). |
| spellingShingle | Alang Ahmad, Shahrul Ainliah Mohd Saufi, Nik Muhammad Irfan Hakimi Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection |
| title | 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_short | Thiol capped gold nanoparticles-based colorimetric sensor for mercury detection |
| title_sort | thiol capped gold nanoparticles-based colorimetric sensor for mercury detection |
| url | http://psasir.upm.edu.my/id/eprint/64421/ http://psasir.upm.edu.my/id/eprint/64421/1/MST%20poster%20111117%2020.pdf |