Nafion Modified Titanium Nitride pH Sensor for Future Biomedical Applications.
Sensors (Basel)
; 23(2)2023 Jan 07.
Article
in English
| MEDLINE | ID: covidwho-2216746
ABSTRACT
pH sensors are increasingly being utilized in the biomedical field and have been implicated in health applications that aim to improve the monitoring and treatment of patients. In this work, a previously developed Titanium Nitride (TiN) solid-state pH sensor is further enhanced, with the potential to be used for pH regulation inside the human body and for other biomedical, industrial, and environmental applications. One of the main limitations of existing solid-state pH sensors is their reduced performance in high redox mediums. The potential shift E0 value of the previously developed TiN pH electrode in the presence of oxidizing or reducing agents is 30 mV. To minimize this redox shift, a Nafion-modified TiN electrode was developed, tested, and evaluated in various mediums. The Nafion-modified electrode has been shown to shift the E0 value by only 2 mV, providing increased accuracy in highly redox samples while maintaining acceptable reaction times. Overcoming the redox interference for pH measurement enables several advantages of the Nafion-modified TiN electrode over the standard pH glass electrode, implicating its use in medical diagnosis, real-time health monitoring, and further development of miniaturized smart sensors.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Tin
/
Titanium
Type of study:
Experimental Studies
Limits:
Humans
Language:
English
Year:
2023
Document Type:
Article
Affiliation country:
S23020699
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