A Tunable Colorimetric Carbon Dioxide Sensor Based on Ion-Exchanger- and Chromoionophore-Doped Hydrogel

Zhang, Yupu1; Du, Xinfeng1; Zhai, Jingying2; Xie, Xiaojiang1

2023-03

10.1002/anse.202300002

Analysis & Sensing   影响因子和分区

2629-2742

We report here a colorimetric carbon dioxide (CO2) optode sensor with a polypropylene microporous membrane on top of a thin layer (30 mu m) of polyurethane hydrogel. The diffusion of CO2 across the polypropylene membrane induced pH changes in the hydrogel containing a lipophilic indicator, a cation exchanger, and a cationic amine. The ratio of the indicator and the cation exchanger was successfully utilized to adjust the sensitivity of the CO2 response. Increasing the relative amount of the cation exchanger made the sensor much more sensitive to CO2 in the lower concentration range. Moreover, the carbarmic formation reaction between the primary amine and CO2 was investigated. The results indicated a very small contribution of carbarmic formation to the overall pH change. With a detection limit of 0.014% for the CO2 partial pressure, the sensor was successful applied to monitor CO2 evolution during yeast catalyzed flour fermentation.

carbon dioxide colorimetric sensor optodes hydrogel ion-exchange

SCI ; ESCI

英语

第一 ; 通讯

National Key Research and Development Program of China[2021YFA0715900] ; Department of Science and Technology of Guangdong Province[2021A1515010330]

Chemistry ; Science & Technology - Other Topics

Chemistry, Analytical ; Nanoscience & Nanotechnology

WOS:001132171000003

WILEY-V C H VERLAG GMBH

人工提交

1.Department of Chemistry Southern University of Science and Technology 1088 Xueyuan Boulvard Shenzhen 518055 (P. R. China)
2.Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology 1088 Xueyuan Boulvard Shenzhen 518055 (P. R. China)

Zhang, Yupu,Du, Xinfeng,Zhai, Jingying,et al. A Tunable Colorimetric Carbon Dioxide Sensor Based on Ion-Exchanger- and Chromoionophore-Doped Hydrogel[J]. Analysis & Sensing,2023,3(6).

Zhang, Yupu,Du, Xinfeng,Zhai, Jingying,&Xie, Xiaojiang.(2023).A Tunable Colorimetric Carbon Dioxide Sensor Based on Ion-Exchanger- and Chromoionophore-Doped Hydrogel.Analysis & Sensing,3(6).

Zhang, Yupu,et al."A Tunable Colorimetric Carbon Dioxide Sensor Based on Ion-Exchanger- and Chromoionophore-Doped Hydrogel".Analysis & Sensing 3.6(2023).