Electrochemical biosensor based on topological insulator Bi.sub.2Se.sub.3 tape electrode for HIV-1 DNA detection
A large-size Bi.sub.2Se.sub.3 tape electrode (BTE) was prepared by peeling off a 2 x 1 x 0.5 cm high-quality single crystal. The feasibility of using the flexible BTE as an efficient bioplatform to load Au nanoparticles and probe DNA for HIV-1 DNA electrochemical sensing was explored. Differential p...
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Published in | Mikrochimica acta (1966) Vol. 189; no. 8 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Springer
01.08.2022
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Abstract | A large-size Bi.sub.2Se.sub.3 tape electrode (BTE) was prepared by peeling off a 2 x 1 x 0.5 cm high-quality single crystal. The feasibility of using the flexible BTE as an efficient bioplatform to load Au nanoparticles and probe DNA for HIV-1 DNA electrochemical sensing was explored. Differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) show that the resultant biosensor has a wide linear range from 0.1 fM to 1 pM, a low detection limit of 50 aM, excellent selectivity, reproducibility and stability, and is superior to the pM DNA detection level of Pt-Au, graphene-AuNPs hybrid biosensors. This outstanding performance is attributed to the intrinsic surface state of Bi.sub.2Se.sub.3 topological insulator in facilitating electron transfer. Therefore, BTE electrochemical biosensor platform has great potential in the application for sensitive detection of DNA biomarkers. Graphical abstract |
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AbstractList | A large-size Bi.sub.2Se.sub.3 tape electrode (BTE) was prepared by peeling off a 2 x 1 x 0.5 cm high-quality single crystal. The feasibility of using the flexible BTE as an efficient bioplatform to load Au nanoparticles and probe DNA for HIV-1 DNA electrochemical sensing was explored. Differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) show that the resultant biosensor has a wide linear range from 0.1 fM to 1 pM, a low detection limit of 50 aM, excellent selectivity, reproducibility and stability, and is superior to the pM DNA detection level of Pt-Au, graphene-AuNPs hybrid biosensors. This outstanding performance is attributed to the intrinsic surface state of Bi.sub.2Se.sub.3 topological insulator in facilitating electron transfer. Therefore, BTE electrochemical biosensor platform has great potential in the application for sensitive detection of DNA biomarkers. A large-size Bi.sub.2Se.sub.3 tape electrode (BTE) was prepared by peeling off a 2 x 1 x 0.5 cm high-quality single crystal. The feasibility of using the flexible BTE as an efficient bioplatform to load Au nanoparticles and probe DNA for HIV-1 DNA electrochemical sensing was explored. Differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) show that the resultant biosensor has a wide linear range from 0.1 fM to 1 pM, a low detection limit of 50 aM, excellent selectivity, reproducibility and stability, and is superior to the pM DNA detection level of Pt-Au, graphene-AuNPs hybrid biosensors. This outstanding performance is attributed to the intrinsic surface state of Bi.sub.2Se.sub.3 topological insulator in facilitating electron transfer. Therefore, BTE electrochemical biosensor platform has great potential in the application for sensitive detection of DNA biomarkers. Graphical abstract |
Audience | Academic |
Author | Xiong, Xiaolu Shi, Qingfan Zhang, Xu Zhu, Peng Li, Shanshan Jiang, Yujiu Ma, Yurong |
Author_xml | – sequence: 1 fullname: Xiong, Xiaolu – sequence: 2 fullname: Zhu, Peng – sequence: 3 fullname: Li, Shanshan – sequence: 4 fullname: Jiang, Yujiu – sequence: 5 fullname: Ma, Yurong – sequence: 6 fullname: Shi, Qingfan – sequence: 7 fullname: Zhang, Xu |
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DOI | 10.1007/s00604-022-05365-8 |
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Snippet | A large-size Bi.sub.2Se.sub.3 tape electrode (BTE) was prepared by peeling off a 2 x 1 x 0.5 cm high-quality single crystal. The feasibility of using the... |
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SubjectTerms | DNA Electric properties Ethylenediaminetetraacetic acid HIV (Viruses) HIV testing |
Title | Electrochemical biosensor based on topological insulator Bi.sub.2Se.sub.3 tape electrode for HIV-1 DNA detection |
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