Premium
A 1,2‐propylene oxide sensor utilizing cataluminescence on CeO 2 nanoparticles
Author(s) -
Liu Hongmei,
Zhang Yantu,
Zhen Yanzhong,
Ma Yuan,
Zuo Weiwei
Publication year - 2014
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2680
Subject(s) - chemistry , detection limit , chloroform , methanol , acetone , formaldehyde , propylene oxide , nanoparticle , catalysis , acetic acid , luminescence , oxide , inorganic chemistry , nuclear chemistry , analytical chemistry (journal) , ethylene oxide , nanotechnology , materials science , chromatography , organic chemistry , copolymer , polymer , optoelectronics
A simple and sensitive gas sensor was proposed for the determination of 1,2‐propylene oxide (PO) based on its cataluminescence (CTL) by oxidation in the air on the surface of CeO 2 nanoparticles. The luminescence characteristics and optimal conditions were investigated in detail. Under optimized conditions, the linear range of the CTL intensity versus the concentration of PO was 10–150 ppm, with a correlation coefficient ( r ) of 0.9974 and a limit of detection (S/N = 3) of 0.9 ppm. The relative standard deviation for 40 ppm PO was 1.2% (n = 7). There was no or only weak response to common foreign substances including acetone, formaldehyde, ethyl acetate, acetic acid, chloroform, propanol, carbon tetrachloride, ether and methanol. There was no significant change in the catalytic activity of the sensor for 100 h. The proposed method was simple and sensitive, with a potential of detecting PO in the environment and industry. Copyright © 2014 John Wiley & Sons, Ltd.