QCM-Based HCl Gas Sensors Using Spin-Coated Aminated Polystyrene Colloids
Hydrogen chloride (HCl) gas is highly toxic to the human body. Therefore, HCl gas detection sensors should be installed at workplaces where trace HCl gas is continuously generated. Even though various polymer-based HCl-gas-sensing films have been developed, simpler and novel sensing platforms should...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-07-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/7/1591 |
| _version_ | 1797562167260610560 |
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| author | Young-Jae Jin Jinyoung Park |
| author_facet | Young-Jae Jin Jinyoung Park |
| author_sort | Young-Jae Jin |
| collection | DOAJ |
| description | Hydrogen chloride (HCl) gas is highly toxic to the human body. Therefore, HCl gas detection sensors should be installed at workplaces where trace HCl gas is continuously generated. Even though various polymer-based HCl-gas-sensing films have been developed, simpler and novel sensing platforms should be developed to ensure the cost effectiveness and reusability of the sensing platforms. Therefore, we present a simple strategy to fabricate reusable HCl-gas-sensing platforms using aminated polystyrene (a-PS) colloids and investigate their sensitivity, reusability, and selectivity using a quartz crystal microbalance (QCM). The reusable <i>a</i>-PS(1.0) colloidal sensor with a high degree of amination (DA) exhibited the highest binding capacity (102 μg/mg) based on the frequency change (Δ<i>f</i>) during the HCl gas adsorption process. Further, its sensitivity and limit of detection (LOD) were 3.88 Hz/ppm and 5.002 ppm, respectively, at a low HCl gas concentration (<10 ppm). In addition, the sensitivity coefficient (<i>k</i>*) of the <i>a</i>-PS(1.0) colloid sensor with respect to HCHO was higher than that in the case of HF because of the lower binding affinity of the former with the <i>a</i>-PS(1.0) colloids. Based on these results, highly sensitive and reproducible <i>a</i>-PS colloids could be reused as an HCl-gas-sensing platform and used as an HCl sorbent in a gas column filter. |
| first_indexed | 2024-03-10T18:24:35Z |
| format | Article |
| id | doaj.art-47f4e22626aa47bda9a59f6b9e179c7c |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T18:24:35Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-47f4e22626aa47bda9a59f6b9e179c7c2023-11-20T07:06:49ZengMDPI AGPolymers2073-43602020-07-01127159110.3390/polym12071591QCM-Based HCl Gas Sensors Using Spin-Coated Aminated Polystyrene ColloidsYoung-Jae Jin0Jinyoung Park1School of Applied Chemical Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, KoreaSchool of Applied Chemical Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, KoreaHydrogen chloride (HCl) gas is highly toxic to the human body. Therefore, HCl gas detection sensors should be installed at workplaces where trace HCl gas is continuously generated. Even though various polymer-based HCl-gas-sensing films have been developed, simpler and novel sensing platforms should be developed to ensure the cost effectiveness and reusability of the sensing platforms. Therefore, we present a simple strategy to fabricate reusable HCl-gas-sensing platforms using aminated polystyrene (a-PS) colloids and investigate their sensitivity, reusability, and selectivity using a quartz crystal microbalance (QCM). The reusable <i>a</i>-PS(1.0) colloidal sensor with a high degree of amination (DA) exhibited the highest binding capacity (102 μg/mg) based on the frequency change (Δ<i>f</i>) during the HCl gas adsorption process. Further, its sensitivity and limit of detection (LOD) were 3.88 Hz/ppm and 5.002 ppm, respectively, at a low HCl gas concentration (<10 ppm). In addition, the sensitivity coefficient (<i>k</i>*) of the <i>a</i>-PS(1.0) colloid sensor with respect to HCHO was higher than that in the case of HF because of the lower binding affinity of the former with the <i>a</i>-PS(1.0) colloids. Based on these results, highly sensitive and reproducible <i>a</i>-PS colloids could be reused as an HCl-gas-sensing platform and used as an HCl sorbent in a gas column filter.https://www.mdpi.com/2073-4360/12/7/1591PS colloidal beadaminationHCl gasQCMsensitivity |
| spellingShingle | Young-Jae Jin Jinyoung Park QCM-Based HCl Gas Sensors Using Spin-Coated Aminated Polystyrene Colloids Polymers PS colloidal bead amination HCl gas QCM sensitivity |
| title | QCM-Based HCl Gas Sensors Using Spin-Coated Aminated Polystyrene Colloids |
| title_full | QCM-Based HCl Gas Sensors Using Spin-Coated Aminated Polystyrene Colloids |
| title_fullStr | QCM-Based HCl Gas Sensors Using Spin-Coated Aminated Polystyrene Colloids |
| title_full_unstemmed | QCM-Based HCl Gas Sensors Using Spin-Coated Aminated Polystyrene Colloids |
| title_short | QCM-Based HCl Gas Sensors Using Spin-Coated Aminated Polystyrene Colloids |
| title_sort | qcm based hcl gas sensors using spin coated aminated polystyrene colloids |
| topic | PS colloidal bead amination HCl gas QCM sensitivity |
| url | https://www.mdpi.com/2073-4360/12/7/1591 |
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