Affiliation:
1. State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University (NPU) and Shaanxi Joint Laboratory of Graphene Xi'an 710072 P. R. China
2. Key Laboratory of Micro/Nano Systems for Aerospace (Ministry of Education) Shaanxi Province Key Laboratory of Micro and Nano Electro‐Mechanical Systems School of Mechanical Engineering NPU Xi'an 710072 P. R. China
Abstract
AbstractWearable glucose sensors are of great significance and highly required in mobile health monitoring and management but suffering from limited long‐term stability and wearable adaptability. Here a simultaneous component and structure engineering strategy is presented, which involves Pt with abundant Ni to achieve three‐dimensional, dual‐structural Pt‐Ni hydrogels with interconnected networks of PtNi nanowires and Ni(OH)2 nanosheets, showing prominent electrocatalytic activity and stability in glucose oxidation under neutral condition. Specifically, the PtNi(1:3) dual hydrogels shows 2.0 and 270.6 times’ activity in the glucose electro‐oxidation as much as the pure Pt and Ni hydrogels. Thanks to the high activity, structural stability, good flexibility, and self‐healing property, the PtNi(1:3) dual gel‐based non‐enzymatic glucose sensing chip is endowed with high performance. It features a high sensitivity, an excellent selectivity and flexibility, and particularly an outstanding long‐term stability over 2 months. Together with a pH sensor and a wireless circuit, an accurate, real‐time, and remote monitoring of sweat glucose is achieved. This facile design of novel dual‐structural metallic hydrogels sheds light to rationally develop new functional materials for high‐performance wearable biosensors.
Funder
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
24 articles.
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