Nafion Modified Titanium Nitride pH Sensor for Future Biomedical Applications.

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.

Application of all solid-state 3D printed pH sensor to beverage samples using matrix matched standard.

In this work, an all solid-state potentiometric pH sensor is developed, which employs a thin-film sputter deposited RuO working electrode, a polyvinylbutyral-SiO modified RuO reference electrode and 3D printed electrode housing. The developed sensor exhibits linear pH response (- 55.7 mV/pH, R = 0.