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Functionalized graphene paper with the function of fuse and its flame-triggered self-cutting performance for fire-alarm sensor application.
- Source :
-
Materials Chemistry & Physics . Sep2020, Vol. 252, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- Electrical fire is the most frequently occurred fire accident, and fire sensors with self-cutting and ultrasensitive fire-alarm response capability are urgent to be designed and developed. Herein, conductive reduced graphene oxide paper (RGOP) with hierarchical structure is prepared by a facile evaporation-assisted self-assembly of graphene oxide (GO) dispersion and then reduction by hydrazine hydrate vapor. The oxidative decomposition of RGOP containing sodium chloride (RGOP-NaCl) is promoted by the addition of NaCl. When being exposed to flame, RGOP-NaCl strips are readily ruptured. Based on this distinctive self-cutting performance of RGOP-NaCl under fire attacking, a novel fire detection and alarm device is designed by establishing controlling and operation circuits. Under fire encountering, an ultrafast warning response (approximately 5.3 s) of RGOP-NaCl is triggered. Fire-alarm time of RGOP-NaCl is adjustable by varying the content of NaCl. Furthermore, this RGOP-NaCl has the function of fuse and can cut off the conductive circuit timely under fire attacking. This finding will provide a novel thought for the design of advanced fire-alarm sensor and will also expand the application of graphene paper. Image 1 • Conductive RGOP-NaCl is prepared by evaporation-induced self-assembly method. • This RGOP-NaCl exhibits ultrasensitive fire-warning response. • RGOP-NaCl has the function of fuse and self-cutting performance under fire attack. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02540584
- Volume :
- 252
- Database :
- Academic Search Index
- Journal :
- Materials Chemistry & Physics
- Publication Type :
- Academic Journal
- Accession number :
- 145320770
- Full Text :
- https://doi.org/10.1016/j.matchemphys.2020.123292