Carbon Nanotube-Based Chemiresistive Sensor Array for Dissolved Gases.

ABSTRACT: Dissolved gases such as oxygen (DO) and ammonia (dNH3) are among the most consequential parameters for the assessment of water quality. Since the concentrations of DO and dNH3 are interdependent through the nitrogen cycle, simultaneous monitoring can be useful in many applications. For example, in wastewater treatment, aeration baths are used to adjust the rate of removal of ammonia by the bioactive sludge. Here, we have developed a sensing array which can monitor dissolved molecular oxygen (DO) and dissolved un-ionized ammonia (dNH3) continuously and simultaneously. This was achieved by functionalizing two sensors made from single-walled carbon nanotube (SWCNT) films with two different molecules: phenyl-capped aniline tetramer (PCAT) and iron phthalocyanine (II) (FePc). It was found that

SUBMITTER: Kirby T 

PROVIDER: S-EPMC11603318 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature