▎ 摘　　要

NOVELTY - Preparation of modified graphene oxide/hydroxyapatite nanowire composite paper involves (i) placing the graphene oxide in water, and ultrasonically stripping to obtain 1 mg/mL graphene oxide dispersion liquid, (ii) adding 1-2 mg/mL organic molecular solution and 1- 2.5 mg/l hydroxyapatite nanowire solution into the prepared graphene dioxide dispersion solution, heat-stirring in an oil bath until the solution is fully mixed, and (iii) leaving the above solution, cooling the mixed solution at room temperature, after vacuum-assisted suction filtration, and drying. USE - Preparation of modified graphene oxide/hydroxyapatite nanowire composite paper used in preparation of fire early warning device (all claimed) e.g. smoke sensor and infrared sensor. ADVANTAGE - The modified graphene oxide/hydroxyapatite nanowire composite paper has fast fire response performance and excellent structure stability, and can be connected with the low-voltage direct current power supply, early warning lamp and other devices are connected in series to form a set of fire early warning device, solves the defects of the existing smoke alarm sensor and the infrared alarm sensor in use, effectively prevents fire risk, and reduces and even avoids the generation of fire and loss caused by it.