Instant pH sensor based on the functionalized cellulose for detecting strong acid leaks.
cellulose
covalent immobilization
fibre optic sensor
pH sensor
strong acids
Journal
Royal Society open science
ISSN: 2054-5703
Titre abrégé: R Soc Open Sci
Pays: England
ID NLM: 101647528
Informations de publication
Date de publication:
Mar 2022
Mar 2022
Historique:
received:
22
10
2021
accepted:
10
02
2022
entrez:
21
3
2022
pubmed:
22
3
2022
medline:
22
3
2022
Statut:
epublish
Résumé
Acid spills cause large-scale environmental damage and casualties. To respond to such incidents, a sensor capable of detecting acid leaks is required. Cellulose is a useful substrate material for the fast detection of acid leaks because it has high hydrophilicity and porosity. On the other hand, methods of manufacturing cellulose-based sensors are still complicated or time-consuming. Thus, in this study, a simple and rapid synthesis method for a cellulose-based pH sensor was proposed. The functionalization of α-cellulose was achieved via chloroacetyl chloride, and Congo red was covalently immobilized to the functionalized cellulose for detecting strong acids. The manufacturing process was composed of two steps as above and finished within 8 h. The developed sensor exhibited absorbance changes in the pH range of 0.2 to 3.0, and response time was shorter than 1 s. A prototype system using this sensor was manufactured and tested, and it detected acid leaks easily and quickly.
Identifiants
pubmed: 35308630
doi: 10.1098/rsos.211660
pii: rsos211660
pmc: PMC8924762
doi:
Banques de données
figshare
['10.6084/m9.figshare.c.5883677']
Dryad
['10.5061/dryad.b5mkkwhf2']
Types de publication
Journal Article
Langues
eng
Pagination
211660Informations de copyright
© 2022 The Authors.
Déclaration de conflit d'intérêts
No other competing interests.
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