Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7233171 | Biosensors and Bioelectronics | 2014 | 6 Pages |
Abstract
Tungsten disulfide (WS2) nanosheets were discovered to possess intrinsic peroxidase-like activity and catalyze the peroxidase substrate 3,3â²,5,5â²-tetramethylbenzidine (TMB) to produce a color reaction in the presence of H2O2. Based on this finding, a colorimetric method and a portable test kit for the visual detection of blood glucose have been developed by using glucose oxidase (GOx) and WS2 nanosheets-catalyzed reactions. The linear range for glucose was ranged from 5 to 300 μM (R2=0.999) with the detection limit of 2.9 μM. The portable test kit was successfully evaluated glucose levels in serum samples from normal persons and diabetes persons by the observable color change from pale yellow to yellow-green, blue-green.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Tianran Lin, Liangshuang Zhong, Zhiping Song, Liangqia Guo, Hanyin Wu, Qingquan Guo, Ying Chen, FengFu Fu, Guonan Chen,