Electrochemical determination of mercury in surface water samples using Au nanoparticles /electrochemically reduced graphene oxide modified electrode
In the present work, we utilized Au nanoparticles /electrochemically reduced graphene oxide ( AuNPs/ErGO) as a modifier of glassy carbon electrode to detect Hg(II) in surface water by a voltammetric method. The careful execution of the fabrication of AuNPs/ErGO on a glassy carbon electrode, achieved...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ada5c1 |
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| author | Ha Thuy Trang Ho Xuan Anh Vu Pham Khac Lieu Tran Ngoc Tuyen Huynh Van Chung Ho Van Thanh Hoang Ho Thuy Duong Nguyen Hai Phong Nguyen Dinh Luyen Dinh Quang Khieu |
| author_facet | Ha Thuy Trang Ho Xuan Anh Vu Pham Khac Lieu Tran Ngoc Tuyen Huynh Van Chung Ho Van Thanh Hoang Ho Thuy Duong Nguyen Hai Phong Nguyen Dinh Luyen Dinh Quang Khieu |
| author_sort | Ha Thuy Trang |
| collection | DOAJ |
| description | In the present work, we utilized Au nanoparticles /electrochemically reduced graphene oxide ( AuNPs/ErGO) as a modifier of glassy carbon electrode to detect Hg(II) in surface water by a voltammetric method. The careful execution of the fabrication of AuNPs/ErGO on a glassy carbon electrode, achieved through the electrochemical reduction of graphene oxide (GO) and Au(III) solution using cyclic voltammetry, was a testament to our dedication and commitment. The modified electrode surface and the obtained materials were characterized by using a range of analytical techniques, including x-ray diffraction, Fourier Infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, energy-dispersive x-ray spectroscopy, elemental distribution maps, and electrochemical impedance spectroscopy. The results revealed the highly dispersed Au nanoparticles around 10–20 nm on the reduced graphene oxide matrix. Differential pulse-anodic stripping voltamtemtry (DP-ASV) was used for quantitative determinations, and the linear calibration curves were obtained in the Hg(II) concentration ranges of 2 to 15 ppb. The proposed DP-ASV approach offers a highly selective and sensitive method for Hg(II) determination with a limit of detection of 0.680 ppb. The study also meticulously addressed the common interfering species in aqueous solutions. Finally, the modified electrode was applied to sensitively determine Hg(II) in tap, lake, and river water samples with satisfactory results. |
| format | Article |
| id | doaj-art-681a1cb2c84244e5a77dafe1b81eae32 |
| institution | Kabale University |
| issn | 2053-1591 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj-art-681a1cb2c84244e5a77dafe1b81eae322025-01-16T18:49:15ZengIOP PublishingMaterials Research Express2053-15912025-01-0112101500510.1088/2053-1591/ada5c1Electrochemical determination of mercury in surface water samples using Au nanoparticles /electrochemically reduced graphene oxide modified electrodeHa Thuy Trang0Ho Xuan Anh Vu1Pham Khac Lieu2https://orcid.org/0000-0002-9002-1416Tran Ngoc Tuyen3Huynh Van Chung4https://orcid.org/0000-0001-7519-1196Ho Van Thanh5Hoang Ho Thuy Duong6Nguyen Hai Phong7Nguyen Dinh Luyen8Dinh Quang Khieu9https://orcid.org/0000-0003-3473-6377University of Sciences, Hue University , 530000, Vietnam; University of Education, Hue University , 530000, VietnamUniversity of Sciences, Hue University , 530000, VietnamUniversity of Sciences, Hue University , 530000, VietnamUniversity of Sciences, Hue University , 530000, VietnamBuon Ma Thuot Medical University , 630000, VietnamThua Thien Hue College of Education , 530000, VietnamUniversity of Education, Hue University , 530000, VietnamUniversity of Sciences, Hue University , 530000, VietnamUniversity of Education, Hue University , 530000, VietnamUniversity of Sciences, Hue University , 530000, VietnamIn the present work, we utilized Au nanoparticles /electrochemically reduced graphene oxide ( AuNPs/ErGO) as a modifier of glassy carbon electrode to detect Hg(II) in surface water by a voltammetric method. The careful execution of the fabrication of AuNPs/ErGO on a glassy carbon electrode, achieved through the electrochemical reduction of graphene oxide (GO) and Au(III) solution using cyclic voltammetry, was a testament to our dedication and commitment. The modified electrode surface and the obtained materials were characterized by using a range of analytical techniques, including x-ray diffraction, Fourier Infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, energy-dispersive x-ray spectroscopy, elemental distribution maps, and electrochemical impedance spectroscopy. The results revealed the highly dispersed Au nanoparticles around 10–20 nm on the reduced graphene oxide matrix. Differential pulse-anodic stripping voltamtemtry (DP-ASV) was used for quantitative determinations, and the linear calibration curves were obtained in the Hg(II) concentration ranges of 2 to 15 ppb. The proposed DP-ASV approach offers a highly selective and sensitive method for Hg(II) determination with a limit of detection of 0.680 ppb. The study also meticulously addressed the common interfering species in aqueous solutions. Finally, the modified electrode was applied to sensitively determine Hg(II) in tap, lake, and river water samples with satisfactory results.https://doi.org/10.1088/2053-1591/ada5c1electrochemically reduced graphene oxidemercurydifferential pulse-anodic stripping voltammetrygold |
| spellingShingle | Ha Thuy Trang Ho Xuan Anh Vu Pham Khac Lieu Tran Ngoc Tuyen Huynh Van Chung Ho Van Thanh Hoang Ho Thuy Duong Nguyen Hai Phong Nguyen Dinh Luyen Dinh Quang Khieu Electrochemical determination of mercury in surface water samples using Au nanoparticles /electrochemically reduced graphene oxide modified electrode Materials Research Express electrochemically reduced graphene oxide mercury differential pulse-anodic stripping voltammetry gold |
| title | Electrochemical determination of mercury in surface water samples using Au nanoparticles /electrochemically reduced graphene oxide modified electrode |
| title_full | Electrochemical determination of mercury in surface water samples using Au nanoparticles /electrochemically reduced graphene oxide modified electrode |
| title_fullStr | Electrochemical determination of mercury in surface water samples using Au nanoparticles /electrochemically reduced graphene oxide modified electrode |
| title_full_unstemmed | Electrochemical determination of mercury in surface water samples using Au nanoparticles /electrochemically reduced graphene oxide modified electrode |
| title_short | Electrochemical determination of mercury in surface water samples using Au nanoparticles /electrochemically reduced graphene oxide modified electrode |
| title_sort | electrochemical determination of mercury in surface water samples using au nanoparticles electrochemically reduced graphene oxide modified electrode |
| topic | electrochemically reduced graphene oxide mercury differential pulse-anodic stripping voltammetry gold |
| url | https://doi.org/10.1088/2053-1591/ada5c1 |
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