Title :
Amino groups-based polymers for CO2 detection; A comparison between two sensing mechanism models
Author :
Serban, B. ; Kumar, Anakkat Koyilothu Sarin ; Brezeanu, M. ; Cobianu, C. ; Buiu, O. ; Bostan, C. ; Varachiu, N. ; Costea, S.
Author_Institution :
Sensors & Wireless Lab. Bucharest, Honeywell Romania SRL, Bucharest, Romania
Abstract :
Two CO2 sensing mechanisms, based on the Hard Soft Acids Bases (HSAB) and Bronsted-Lowry theories, are discussed and compared. They are evaluated by selecting amino groups-based coating layers, which are deposited on Surface Acoustic Wave (SAW) devices for CO2 detection. Experimentally measured CO2 sensitivities of different coating layers, such as polyallylamine (PAA), polyethyleneimine (PEI), nanocomposite matrix based on PAA-aminocarbon nanotubes and PEI-aminocarbon nanotubes, emeraldine, 4-sulfocalix[4]arene-doped polyaniline, matrix based emeraldine and carbonic anhydrase (PACA) are compared and evaluated according to their corresponding sensing mechanism.
Keywords :
carbon compounds; chemical sensors; doping; insulating coatings; nanocomposites; nanosensors; nanotube devices; polymers; surface acoustic wave devices; Bronsted-Lowry concept; CO2; SAW; coating layer sensitivity; detection process; doping; hard soft acid bases; nanocomposite matrix; nanotubes; polymers; sensing mechanism; surface acoustic wave devices; Carbon dioxide; Coatings; Nanotubes; Plastics; Sensors; Surface acoustic wave devices; Surface acoustic waves; Bronsted-Lowry; CO2 sensor; HSAB; SAW; carbonic anhydrase; polyaniline; polymer;
Conference_Titel :
Semiconductor Conference (CAS), 2011 International
Conference_Location :
Sinaia
Print_ISBN :
978-1-61284-173-1
DOI :
10.1109/SMICND.2011.6095734
