Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions
The modification of graphene quantum dots (GQDs) may drastically enhance their properties, therefore resulting in various related applications. This paper reported the preparation of novel cetyltrimethylammonium bromide/hydroxylated graphene quantum dots (CTAB/HGQDs) thin film using the spin coating...
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MDPI AG
2020-06-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/11/2591 |
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| author | Nur Ain Asyiqin Anas Yap Wing Fen Nor Azah Yusof Nur Alia Sheh Omar Nur Syahira Md Ramdzan Wan Mohd Ebtisyam Mustaqim Mohd Daniyal |
| author_facet | Nur Ain Asyiqin Anas Yap Wing Fen Nor Azah Yusof Nur Alia Sheh Omar Nur Syahira Md Ramdzan Wan Mohd Ebtisyam Mustaqim Mohd Daniyal |
| author_sort | Nur Ain Asyiqin Anas |
| collection | DOAJ |
| description | The modification of graphene quantum dots (GQDs) may drastically enhance their properties, therefore resulting in various related applications. This paper reported the preparation of novel cetyltrimethylammonium bromide/hydroxylated graphene quantum dots (CTAB/HGQDs) thin film using the spin coating technique. The properties of the thin film were then investigated and studied. The functional groups existing in CTAB/HGQDs thin film were confirmed by the Fourier transform infrared (FTIR) spectroscopy, while the atomic force microscope (AFM) displayed a homogenous surface of the thin film with an increase in surface roughness upon modification. Optical characterizations using UV-Vis absorption spectroscopy revealed a high absorption with an optical band gap of 4.162 eV. Additionally, the photoluminescence (PL) spectra illustrated the maximum emission peak of CTAB/HGQDs thin film at a wavelength of 444 nm. The sensing properties of the as-prepared CTAB/HGQDs thin film were studied using a surface plasmon resonance technique towards the detection of several heavy metal ions (HMIs) (Zn<sup>2+</sup>, Ni<sup>2+</sup>, and Fe<sup>3+</sup>). This technique generated significant results and showed that CTAB/HGQDs thin film has great potential for HMIs detection. |
| first_indexed | 2024-03-10T19:19:44Z |
| format | Article |
| id | doaj.art-46adbcd4e9ef4fc1bad4e4088e1c949f |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T19:19:44Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-46adbcd4e9ef4fc1bad4e4088e1c949f2023-11-20T03:03:11ZengMDPI AGMaterials1996-19442020-06-011311259110.3390/ma13112591Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal IonsNur Ain Asyiqin Anas0Yap Wing Fen1Nor Azah Yusof2Nur Alia Sheh Omar3Nur Syahira Md Ramdzan4Wan Mohd Ebtisyam Mustaqim Mohd Daniyal5Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, MalaysiaFunctional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, MalaysiaFunctional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, MalaysiaDepartment of Physics, Faculty of Science, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, MalaysiaFunctional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, MalaysiaThe modification of graphene quantum dots (GQDs) may drastically enhance their properties, therefore resulting in various related applications. This paper reported the preparation of novel cetyltrimethylammonium bromide/hydroxylated graphene quantum dots (CTAB/HGQDs) thin film using the spin coating technique. The properties of the thin film were then investigated and studied. The functional groups existing in CTAB/HGQDs thin film were confirmed by the Fourier transform infrared (FTIR) spectroscopy, while the atomic force microscope (AFM) displayed a homogenous surface of the thin film with an increase in surface roughness upon modification. Optical characterizations using UV-Vis absorption spectroscopy revealed a high absorption with an optical band gap of 4.162 eV. Additionally, the photoluminescence (PL) spectra illustrated the maximum emission peak of CTAB/HGQDs thin film at a wavelength of 444 nm. The sensing properties of the as-prepared CTAB/HGQDs thin film were studied using a surface plasmon resonance technique towards the detection of several heavy metal ions (HMIs) (Zn<sup>2+</sup>, Ni<sup>2+</sup>, and Fe<sup>3+</sup>). This technique generated significant results and showed that CTAB/HGQDs thin film has great potential for HMIs detection.https://www.mdpi.com/1996-1944/13/11/2591graphene quantum dotscetyltrimethylammonium bromidethin filmstructuralopticalSPR |
| spellingShingle | Nur Ain Asyiqin Anas Yap Wing Fen Nor Azah Yusof Nur Alia Sheh Omar Nur Syahira Md Ramdzan Wan Mohd Ebtisyam Mustaqim Mohd Daniyal Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions Materials graphene quantum dots cetyltrimethylammonium bromide thin film structural optical SPR |
| title | Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions |
| title_full | Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions |
| title_fullStr | Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions |
| title_full_unstemmed | Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions |
| title_short | Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions |
| title_sort | investigating the properties of cetyltrimethylammonium bromide hydroxylated graphene quantum dots thin film for potential optical detection of heavy metal ions |
| topic | graphene quantum dots cetyltrimethylammonium bromide thin film structural optical SPR |
| url | https://www.mdpi.com/1996-1944/13/11/2591 |
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