A novel nitrite biosensor based on the direct electrochemistry of horseradish peroxidase immobilized on porous Co3O4 nanosheets and reduced graphene oxide composite modified electrode
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- 作者：Hui Liua ; liuhui@sust.edu.cn" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae ; Kai Guoa ; 1Author Vitae ; Jing Lva ; 1Author Vitae ; Yuan GaobAuthor Vitae ; Congyue DuanaAuthor Vitae ; Lu DengaAuthor Vitae ; Zhenfeng Zhua ; Author Vitae
- 关键词：Biosensor ; Porous Co3O4 hexagonal nanosheets ; Direct electron transfer ; Nitrite
- 刊名：Sensors & Actuators: B. Chemical
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：238
- 期：Complete
- 页码：249-256
- 全文大小：2772 K
文摘
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Porous Co3O4 hexagonal nanosheets have been synthesized.
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A novel mediator-free biosensor, Co3O4-HRP/rGO/GCE, has been fabricated.
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The biosensor displays a wide linear range of 1–5400 μM for NaNO2.
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The biosensor exhibits a low detection limit of 0.21 μM for NaNO2.