.png){kind=icon}
.png){kind=icon}
Return
Biofuel Cell-Based Potentiostat-Free Smart Diaper Sensor for Urinary Glucose Monitoring
.png){kind=icon}
PRE
AI
M
A
T
J
A
DOI：10.1002/anse.202500039.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
A diaper-based, flexible, and miniature enzymatic biofuel cell (EBFC) is fabricated on carbon-coated conductive threads to detect glucose in the absence of a potentiostat. To construct the EBFC anode, 1,4-Naphthoquinone redox mediator is immobilized with glucose oxidase (GOx) on multi-walled carbon nanotubes. Ag/Ag2O redox couple-based cathode is developed and integrated into BFC cathode due to its ability to perform even in a limited oxygen environment. Gold nanowires (AuNWs) are prepared and utilized for electrical wiring of GOx to the electrode surface. The EBFCs performance are found to be greatly enhanced (eight fold) in the presence of AuNWs with a maximum power density of 117 μW cm−2 at an open circuit potential of 0.43 V. The EBFC shows linear increase in short-circuit currents when exposed to different glucose concentrations. This configuration enables precise glucose detection in the absence of a potentiostat. The results indicate that the sensor could detect a wide range of glucose (0.25–10 mM) in artificial urine and real human samples. The sensor exhibits remarkable selectivity toward glucose in the presence of common interferences. To validate the sensor's performance, urine and blood samples are collected from three diabetic and three healthy volunteers. The results show a good correlation between both measurements, with a Pearson correlation coefficient of 0.89, suggesting the efficiency of the smart diaper sensor for real-time urine analysis.
Keywords:
biofuel cells
diaper sensor
glucose detection
short-circuit current
urine analysis
Journal
A
IF:
2.9
Papers:
246
Citations:
393
Organization
Cited Papers