Cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(II) ions
A photoelectrochemical (PEC) sensor with excellent sensitivity and detection toward copper (II) ions (Cu2+) was developed using a cadmium sulphide-reduced graphene oxide (CdS-rGO) nanocomposite on an indium tin oxide (ITO) surface, with triethanolamine (TEA) used as the sacrificial electron donor. T...
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| Language: | English |
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Public Library of Science
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/55228/ http://psasir.upm.edu.my/id/eprint/55228/1/Cadmium%20sulphide-reduced%20graphene%20oxide-modified%20photoelectrode-based%20photoelectrochemical%20sensing%20platform%20for%20copper%28II%29%20ions.pdf |
| _version_ | 1848852748146049024 |
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| author | Ibrahim, I. Lim, H. N. Huang, N. M. A., Pandikumar |
| author_facet | Ibrahim, I. Lim, H. N. Huang, N. M. A., Pandikumar |
| author_sort | Ibrahim, I. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A photoelectrochemical (PEC) sensor with excellent sensitivity and detection toward copper (II) ions (Cu2+) was developed using a cadmium sulphide-reduced graphene oxide (CdS-rGO) nanocomposite on an indium tin oxide (ITO) surface, with triethanolamine (TEA) used as the sacrificial electron donor. The CdS nanoparticles were initially synthesized via the aerosol-assisted chemical vapor deposition (AACVD) method using cadmium acetate and thiourea as the precursors to Cd2+ and S2-, respectively. Graphene oxide (GO) was then dip-coated onto the CdS electrode and sintered under an argon gas flow (50 mL/min) for the reduction process. The nanostructured CdS was adhered securely to the ITO by a continuous network of rGO that also acted as an avenue to intensify the transfer of electrons from the conduction band of CdS. The photoelectrochemical results indicated that the ITO/CdS-rGO photoelectrode could facilitate broad UV-visible light absorption, which would lead to a higher and steady-state photocurrent response in the presence of TEA in 0.1 M KCl. The photocurrent decreased with an increase in the concentration of Cu2+ ions. The photoelectrode response for Cu2+ ion detection had a linear range of 0.5-120 μM, with a limit of detection (LoD) of 16 nM. The proposed PEC sensor displayed ultra-sensitivity and good selectivity toward Cu2+ ion detection. |
| first_indexed | 2025-11-15T10:43:00Z |
| format | Article |
| id | upm-55228 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:43:00Z |
| publishDate | 2016 |
| publisher | Public Library of Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-552282017-11-29T04:01:34Z http://psasir.upm.edu.my/id/eprint/55228/ Cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(II) ions Ibrahim, I. Lim, H. N. Huang, N. M. A., Pandikumar A photoelectrochemical (PEC) sensor with excellent sensitivity and detection toward copper (II) ions (Cu2+) was developed using a cadmium sulphide-reduced graphene oxide (CdS-rGO) nanocomposite on an indium tin oxide (ITO) surface, with triethanolamine (TEA) used as the sacrificial electron donor. The CdS nanoparticles were initially synthesized via the aerosol-assisted chemical vapor deposition (AACVD) method using cadmium acetate and thiourea as the precursors to Cd2+ and S2-, respectively. Graphene oxide (GO) was then dip-coated onto the CdS electrode and sintered under an argon gas flow (50 mL/min) for the reduction process. The nanostructured CdS was adhered securely to the ITO by a continuous network of rGO that also acted as an avenue to intensify the transfer of electrons from the conduction band of CdS. The photoelectrochemical results indicated that the ITO/CdS-rGO photoelectrode could facilitate broad UV-visible light absorption, which would lead to a higher and steady-state photocurrent response in the presence of TEA in 0.1 M KCl. The photocurrent decreased with an increase in the concentration of Cu2+ ions. The photoelectrode response for Cu2+ ion detection had a linear range of 0.5-120 μM, with a limit of detection (LoD) of 16 nM. The proposed PEC sensor displayed ultra-sensitivity and good selectivity toward Cu2+ ion detection. Public Library of Science 2016-05 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/55228/1/Cadmium%20sulphide-reduced%20graphene%20oxide-modified%20photoelectrode-based%20photoelectrochemical%20sensing%20platform%20for%20copper%28II%29%20ions.pdf Ibrahim, I. and Lim, H. N. and Huang, N. M. and A., Pandikumar (2016) Cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(II) ions. PLOS ONE, 11 (5). pp. 1-18. ISSN 1932-6203 http://www.plosone.org/home.action 10.1371/journal.pone.0154557 |
| spellingShingle | Ibrahim, I. Lim, H. N. Huang, N. M. A., Pandikumar Cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(II) ions |
| title | Cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(II) ions |
| title_full | Cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(II) ions |
| title_fullStr | Cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(II) ions |
| title_full_unstemmed | Cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(II) ions |
| title_short | Cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(II) ions |
| title_sort | cadmium sulphide-reduced graphene oxide-modified photoelectrode-based photoelectrochemical sensing platform for copper(ii) ions |
| url | http://psasir.upm.edu.my/id/eprint/55228/ http://psasir.upm.edu.my/id/eprint/55228/ http://psasir.upm.edu.my/id/eprint/55228/ http://psasir.upm.edu.my/id/eprint/55228/1/Cadmium%20sulphide-reduced%20graphene%20oxide-modified%20photoelectrode-based%20photoelectrochemical%20sensing%20platform%20for%20copper%28II%29%20ions.pdf |