Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5450434 | Progress in Natural Science: Materials International | 2017 | 6 Pages |
Abstract
A regular nanostructure has been widely confirmed to result ina marked improvement in material performance in biosensing applications. In the present study, a regular nanostructured Prussian blue (PB) film with two heterogeneous crystal layers was synthesized in-situ using a secondary growth method. A PB seed layer was first controlled to form uniform cube-like crystal nuclei through an ultrasonic reaction with a single reactant. Then, well-defined 100 nm PB nanocubes were further crystallized on this seed layer using a self-assembly approach. In order to accelerate the electron transfer rate during the enzyme reaction for glucose detection, the graphene was used as the main cross-linker to immobilize glucose oxidase on the PB film. The as-prepared biosensor exhibited high electrocatalysis and electron conductivity for the detection of trace glucose with a sensitivity of 141.5 μA mMâ1 cmâ2, as well as excellent anti-interference ability in the presence of ascorbic acid and uric acid under a low operation potential of â0.05 V.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yu Liu, Jingmeng Peng, Danfeng Jiang, Zhenyu Chu, Wanqin Jin,