Vertical copper oxide nanowire arrays attached three-dimensional macroporous framework as a self-supported sensor for sensitive hydrogen peroxide detection
A hierarchical nanostructure consisting of uniform copper oxide nanowires vertically grown on three-dimensional copper framework (CuO NWs/3D-Cu foam) was prepared by a two-step synthetic process. The uniform CuO NWs anchored onto the 3D foam exhibited outstanding electrocatalytic activity towards hy...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-02-01
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| Series: | Arabian Journal of Chemistry |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535219300310 |
| _version_ | 1818380573210574848 |
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| author | D.M. Nguyen H.N. Bich P.D. Hai Anh P.H. Ai-Le Q.B. Bui |
| author_facet | D.M. Nguyen H.N. Bich P.D. Hai Anh P.H. Ai-Le Q.B. Bui |
| author_sort | D.M. Nguyen |
| collection | DOAJ |
| description | A hierarchical nanostructure consisting of uniform copper oxide nanowires vertically grown on three-dimensional copper framework (CuO NWs/3D-Cu foam) was prepared by a two-step synthetic process. The uniform CuO NWs anchored onto the 3D foam exhibited outstanding electrocatalytic activity towards hydrogen peroxide reduction due to the unique one‐dimensional direction with its excellent catalytic activity and large surface area of 3D substrate, which enhanced electroactive sites and charge conductivity. As a result, a wide linear detection range of 1 µM–1 mM, good sensitivity of 8.87 µA/(mM ⋅ cm2), low detection limit of 0.98 µM, and rapid response time of 5 s to hydrogen peroxide were achieved under a working potential of −0.4 V in phosphate buffer solution (pH of 7.4). In addition, the CuO NWs/3D-Cu foam material showed excellent selectivity to hydrogen peroxide and good resistance against poisonous interferents, including ascorbic acid, dopamine, urea, uric acid, and potassium chloride. Furthermore, the CuO NWs/3D-Cu foam presented good reproducibility, stability, and accurate detection for hydrogen peroxide in real sample; therefore, it may be considered to be a potential free-standing hydrogen peroxide sensor in practical analysis applications. Keywords: Copper oxide nanowires, Three-dimensional substrate, Electrocatalyst, Hydrogen peroxide detection, Self-supported sensors |
| first_indexed | 2024-12-14T02:20:50Z |
| format | Article |
| id | doaj.art-f5249e12a6df44dc987817cdd0668d8e |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-12-14T02:20:50Z |
| publishDate | 2020-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-f5249e12a6df44dc987817cdd0668d8e2022-12-21T23:20:30ZengElsevierArabian Journal of Chemistry1878-53522020-02-0113239343945Vertical copper oxide nanowire arrays attached three-dimensional macroporous framework as a self-supported sensor for sensitive hydrogen peroxide detectionD.M. Nguyen0H.N. Bich1P.D. Hai Anh2P.H. Ai-Le3Q.B. Bui4Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet NamCenter of Excellence for Green Energy and Environmental Nanomaterials, Nguyen Tat Thanh University, Ho Chi Minh City, Viet NamAutomotive Engineering and Technology, Sao Do University, Hai Duong, Viet Nam; SYMME, Université Savoie Mont Blanc, FR-74000 Annecy, FranceFaculty of Chemical Engineering-Industrial University of Ho Chi Minh City, Ho Chi Minh City, Viet NamSustainable Developments in Civil Engineering Research Group, Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Corresponding author.A hierarchical nanostructure consisting of uniform copper oxide nanowires vertically grown on three-dimensional copper framework (CuO NWs/3D-Cu foam) was prepared by a two-step synthetic process. The uniform CuO NWs anchored onto the 3D foam exhibited outstanding electrocatalytic activity towards hydrogen peroxide reduction due to the unique one‐dimensional direction with its excellent catalytic activity and large surface area of 3D substrate, which enhanced electroactive sites and charge conductivity. As a result, a wide linear detection range of 1 µM–1 mM, good sensitivity of 8.87 µA/(mM ⋅ cm2), low detection limit of 0.98 µM, and rapid response time of 5 s to hydrogen peroxide were achieved under a working potential of −0.4 V in phosphate buffer solution (pH of 7.4). In addition, the CuO NWs/3D-Cu foam material showed excellent selectivity to hydrogen peroxide and good resistance against poisonous interferents, including ascorbic acid, dopamine, urea, uric acid, and potassium chloride. Furthermore, the CuO NWs/3D-Cu foam presented good reproducibility, stability, and accurate detection for hydrogen peroxide in real sample; therefore, it may be considered to be a potential free-standing hydrogen peroxide sensor in practical analysis applications. Keywords: Copper oxide nanowires, Three-dimensional substrate, Electrocatalyst, Hydrogen peroxide detection, Self-supported sensorshttp://www.sciencedirect.com/science/article/pii/S1878535219300310 |
| spellingShingle | D.M. Nguyen H.N. Bich P.D. Hai Anh P.H. Ai-Le Q.B. Bui Vertical copper oxide nanowire arrays attached three-dimensional macroporous framework as a self-supported sensor for sensitive hydrogen peroxide detection Arabian Journal of Chemistry |
| title | Vertical copper oxide nanowire arrays attached three-dimensional macroporous framework as a self-supported sensor for sensitive hydrogen peroxide detection |
| title_full | Vertical copper oxide nanowire arrays attached three-dimensional macroporous framework as a self-supported sensor for sensitive hydrogen peroxide detection |
| title_fullStr | Vertical copper oxide nanowire arrays attached three-dimensional macroporous framework as a self-supported sensor for sensitive hydrogen peroxide detection |
| title_full_unstemmed | Vertical copper oxide nanowire arrays attached three-dimensional macroporous framework as a self-supported sensor for sensitive hydrogen peroxide detection |
| title_short | Vertical copper oxide nanowire arrays attached three-dimensional macroporous framework as a self-supported sensor for sensitive hydrogen peroxide detection |
| title_sort | vertical copper oxide nanowire arrays attached three dimensional macroporous framework as a self supported sensor for sensitive hydrogen peroxide detection |
| url | http://www.sciencedirect.com/science/article/pii/S1878535219300310 |
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