Volume 22, Issue 10 pp. 1027-1036
Review
Free Access

Graphene Based Electrochemical Sensors and Biosensors: A Review

Yuyan Shao

Yuyan Shao

Pacific Northwest National Laboratory, Richland WA 99352, USA

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Jun Wang

Jun Wang

Pacific Northwest National Laboratory, Richland WA 99352, USA

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Hong Wu

Hong Wu

Pacific Northwest National Laboratory, Richland WA 99352, USA

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Jun Liu

Jun Liu

Pacific Northwest National Laboratory, Richland WA 99352, USA

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Ilhan A. Aksay

Ilhan A. Aksay

Department of Chemical Engineering, Princeton University, Princeton, NJ 08544 USA

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Yuehe Lin

Yuehe Lin

Pacific Northwest National Laboratory, Richland WA 99352, USA

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Abstract

Graphene, emerging as a true 2-dimensional material, has received increasing attention due to its unique physicochemical properties (high surface area, excellent conductivity, high mechanical strength, and ease of functionalization and mass production). This article selectively reviews recent advances in graphene-based electrochemical sensors and biosensors. In particular, graphene for direct electrochemistry of enzyme, its electrocatalytic activity toward small biomolecules (hydrogen peroxide, NADH, dopamine, etc.), and graphene-based enzyme biosensors have been summarized in more detail; Graphene-based DNA sensing and environmental analysis have been discussed. Future perspectives in this rapidly developing field are also discussed.