▎ 摘　　要

NOVELTY - Preparing fast response to fentanyl iron metal organic frame/nanocarbon material comprises (i) adding the iron salt and organic ligand into the solvent, dissolving fully, transferring into the reaction vessel to react, washing with methanol, deionized water, ethanol and acetone sequentially and vacuum drying at 80℃ for 12 hours to obtain the iron metal organic frame; and (ii) adding 10 mg iron metal organic frame and 1-100 mg nano-carbon into a solvent for ultrasonic reaction to obtain a dispersion liquid, taking the dispersion liquid, applying it to a glassy carbon electrode and naturally drying. USE - The method is useful for preparing fast response to fentanyl iron metal organic frame/nanocarbon material. ADVANTAGE - The method prepares fast response to fentanyl iron metal organic frame/nanocarbon material which promotes the sensitivity and response rate which shows excellent performance in electrochemical fast detection technology thus realizes a super detection limit and excellent detection repeatability and stability in electrochemical environment and air and become a potential application material in the rapid detection technology of fentanyl. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Iron metal organic frame/nanocarbon material, prepared as mentioned above; and Application of the iron metal organic frame/nanocarbon material in the fast detection technology of fentanyl has the iron metal organic frame /nanocarbon material has an ultra-low detection limit of 10 nM for fentanyl.