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Non-enzymatic glucose sensor based on hierarchical Au/Ni/boron-doped diamond heterostructure electrode for improving performances

Non-enzymatic glucose sensor based on hierarchical Au/Ni/boron-doped diamond heterostructure electrode for improving performances
Non-enzymatic glucose sensor based on hierarchical Au/Ni/boron-doped diamond heterostructure electrode for improving performances

A novel hierarchical Au/Ni/boron-doped diamond (BDD) heterostructure electrode was fabricated by two-step heat-treatment. The heterostructure that hierarchical Au/Ni nanoparticles are embedded on the surface of BDD was demonstrated by transmission electron microscope (TEM). Cyclic voltammetry (CV) and amperometric detection were used to test electrochemical properties of the prepared electrodes. The Au/Ni/BDD electrode exhibited enhanced catalytic activity and stability in glucose detection, as compared to that of the Au/BDD and Ni/BDD electrodes. On the optimal NaOH concentration and applied potential, the Au/Ni/BDD electrode exhibited an extremely wide detection range of 0.005-32 mM with high sensitivity of 1229.5 μAmM−1cm−2 and an excellent long-term stability (maintains 94.8% of initial current after one month). In addition, the prepared electrode also exhibited a low detection limit of 2 μM (S/N = 3), good selectivity and reproducibility. At last, the reasons for enhanced catalytic activity and excellent stability of Au/Ni/BDD electrode were discussed.

0013-4651
B373-B380
Zheng, Kuangzhi
284722c4-5089-4a7c-aa37-da5ed54859a0
Longn, Hangyu
1cee22b1-e94d-4bdf-a197-899efc7a5c5e
Wei, Qiuping
707ad8e3-bb70-49b8-9d0c-869d2aa5983f
Ma, Li
1ba2adc7-e4d8-4a7b-8cfd-10d9ff41564b
Qiao, Leilei
83026a98-712e-44f6-8c52-95f4bbc26efc
Li, Can
4a677df4-c96f-4d7a-985b-4d3b2cb2eda1
Meng, Lingcong
8de7a0cb-c6aa-4dfd-94f5-bcdae5105a56
Lin, Cheng Te
bd5be3af-e962-4e86-8a7f-c564ecf3fd9e
Jiang, Yunlu
efdcb0cd-592f-4195-a0d6-8df423351339
Zhao, Ting
55410ee0-0d3c-46d8-b853-3492149fdbfe
Zhou, Kechao
e787d024-1ccb-436a-8321-e83060350f89
Zheng, Kuangzhi
284722c4-5089-4a7c-aa37-da5ed54859a0
Longn, Hangyu
1cee22b1-e94d-4bdf-a197-899efc7a5c5e
Wei, Qiuping
707ad8e3-bb70-49b8-9d0c-869d2aa5983f
Ma, Li
1ba2adc7-e4d8-4a7b-8cfd-10d9ff41564b
Qiao, Leilei
83026a98-712e-44f6-8c52-95f4bbc26efc
Li, Can
4a677df4-c96f-4d7a-985b-4d3b2cb2eda1
Meng, Lingcong
8de7a0cb-c6aa-4dfd-94f5-bcdae5105a56
Lin, Cheng Te
bd5be3af-e962-4e86-8a7f-c564ecf3fd9e
Jiang, Yunlu
efdcb0cd-592f-4195-a0d6-8df423351339
Zhao, Ting
55410ee0-0d3c-46d8-b853-3492149fdbfe
Zhou, Kechao
e787d024-1ccb-436a-8321-e83060350f89

Zheng, Kuangzhi, Longn, Hangyu, Wei, Qiuping, Ma, Li, Qiao, Leilei, Li, Can, Meng, Lingcong, Lin, Cheng Te, Jiang, Yunlu, Zhao, Ting and Zhou, Kechao (2019) Non-enzymatic glucose sensor based on hierarchical Au/Ni/boron-doped diamond heterostructure electrode for improving performances. Journal of the Electrochemical Society, 166 (6), B373-B380. (doi:10.1149/2.0561906jes).

Record type: Article

Abstract

A novel hierarchical Au/Ni/boron-doped diamond (BDD) heterostructure electrode was fabricated by two-step heat-treatment. The heterostructure that hierarchical Au/Ni nanoparticles are embedded on the surface of BDD was demonstrated by transmission electron microscope (TEM). Cyclic voltammetry (CV) and amperometric detection were used to test electrochemical properties of the prepared electrodes. The Au/Ni/BDD electrode exhibited enhanced catalytic activity and stability in glucose detection, as compared to that of the Au/BDD and Ni/BDD electrodes. On the optimal NaOH concentration and applied potential, the Au/Ni/BDD electrode exhibited an extremely wide detection range of 0.005-32 mM with high sensitivity of 1229.5 μAmM−1cm−2 and an excellent long-term stability (maintains 94.8% of initial current after one month). In addition, the prepared electrode also exhibited a low detection limit of 2 μM (S/N = 3), good selectivity and reproducibility. At last, the reasons for enhanced catalytic activity and excellent stability of Au/Ni/BDD electrode were discussed.

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e-pub ahead of print date: 28 March 2019

Identifiers

Local EPrints ID: 434840
URI: http://eprints.soton.ac.uk/id/eprint/434840
ISSN: 0013-4651
PURE UUID: 4574f7f1-65b1-46de-a47a-5c0c752281b0
ORCID for Lingcong Meng: ORCID iD orcid.org/0000-0002-3995-3584

Catalogue record

Date deposited: 11 Oct 2019 16:30
Last modified: 26 Nov 2021 03:10

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Contributors

Author: Kuangzhi Zheng
Author: Hangyu Longn
Author: Qiuping Wei
Author: Li Ma
Author: Leilei Qiao
Author: Can Li
Author: Lingcong Meng ORCID iD
Author: Cheng Te Lin
Author: Yunlu Jiang
Author: Ting Zhao
Author: Kechao Zhou

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