Abstract
Early fire alarms working at the pre-combustion stage have a promising future to achieve more efficient and intelligent fire management. Herein, a graphene oxide (GO)-based film is provided by introducing two-dimensional conductive titanium carbide (MXene) as a bridge to implement low-temperature alert and coupled with a small self-designed wireless signal conversion device to improve its intelligence. The fire-warning film fabricated by a facile formulation can shorten the response time to 1 s, showing the ultrafast sensitive ability at 250 ºC. Moreover, the warning signal transmission contains the warning message on a computer monitor and precise real-time fire luminosity value on a local and remote computer monitor via the associated luminosity sensor. This work further shortens response time at lower response temperatures, showing improved sensitivity ability. Intriguingly, a luminosity sensor is firstly introduced, fully realizing the combination between signal transmission of fire alarm and the Internet era. This work can also provide theoretical guidance for next-generation smart low-temperature fire alarms.
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