Citation

Chen G, Yuan B, Wang Y, Chen X, Huang C, Shang S, Tao H, Liu J, Sun W, Yang P, Shi G. J. Colloid. Interface Sci. 2020; 578: 412-421.

Copyright

(Copyright © 2020, Elsevier Publishing)

DOI

10.1016/j.jcis.2020.05.112

PMID

32535423

Abstract

A novel nacre-like flame-retardant paper based on graphene oxide (GO), and phytic acid (PTA) is fabricated via evaporation-induced self-assembly. This facile method is time saving and low energy consuming. A facile approach is proposed to improve thermal oxidative stability of GO paper by in situ phosphorus doping during flame exposure. Then fire-alarm system is designed based on the high-temperature thermal reduction characteristic of GO. The GO paper functionalized with PTA (GO-PTA) can provide ultrasensitive, reliable and longtime fire early-warning signal. Fire alarm can be triggered at approximately 0.50 s when GO-PTA samples are attacked by fire. Phosphorus atoms are in situ doped into graphene layers during fire exposure, endowing GO-PTA paper with outstanding thermal oxidative stability, and thus alarm duration time of GO is greatly improved. The work develops advanced fire detection and early-warning sensors that provide reliable and continuous signals, which provide more available time for fire evacuation.

Language: en

Keywords

Fire resistance; Fire warning response; Graphene oxide paper; Nacre; Phosphorus doping