(229c) Characterization of TiO2 Nanotubular Sensor for Detecting Tuberculosis Volatile Organic Compounds
AIChE Annual Meeting
Monday, October 30, 2017 - 3:57pm to 4:18pm
To take advantage of the presence of these unique VOCs, a hierarchical cobalt functionalized Titanium oxide nanotubular substrate has been made. In our previous work, we showed that at certain biased voltages methyl nicotinate and p-anisate will bind with functionalized TiO2 nanotubes2. The sensor response is measured between the baseline current and the final current. Several variables affect the sensor response to VOCs, such as nanotubular morphology, the percentage of cobalt in the TiO2 nanotubes, the gas flow rate and both the concentration and volume of the VOC provided to the sensor.
In this work, we will present results of testing sensors with various morphologies at different volumes, flow rates and concentrations of the two biomarkers mentioned in order to characterize trends in sensor response. This will help us optimize our results from the field and measure the patientâs stage of disease. Sensor morphology and the amount of cobalt on TiO2 nanotubes will also affect the baseline current of the sensor. In order to improve the sensorâs performance, we will examine a range of baseline currents and its influence on reliability of the response and current signal to noise ratio. Detailed analysis of the sensor performance to different variable ranges will be presented.
- Tuberculosis (TB) Data and Statistics. https://www.cdc.gov/tb/statistics/ Accessed 12/16/2016, 2016.
- Bhattacharyya D, Smith YR, Misra M, Mohanty SK. Electrochemical detection of methyl nicotinate biomarker using functionalized anodized titania nanotube arrays. Materials Research Express 2015;2(2):025002.