▎ 摘　　要

NOVELTY - Loaded nano zero-valent iron continuous flow micro-reactor comprises a stainless steel tube and a film layer loaded on the stainless steel inner wall, and where the film layer is composite catalytic film of reduced graphene oxide/polypyrrole nanocomposite/nano zero-valent iron. USE - Loaded nano zero-valent iron continuous flow micro-reactor used in the removal of water environmental pollutant p-nitrophenol (clamed). ADVANTAGE - The loaded nano zero-valent iron continuous flow micro-reactor is easy to prepare, has high reaction activity, high mass transfer and heat transfer efficiency, improves the recoverability and reactivity of the catalyst. DETAILED DESCRIPTION - Loaded nano zero-valent iron continuous flow micro-reactor comprises a stainless steel tube and a film layer loaded on the stainless steel inner wall, and where the film layer is a composite catalytic film of reduced graphene oxide/polypyrrole nanocomposite (rGO/PPy)/nano zero-valent iron (nZVI). INDEPNDENT CLAIMS are included for the following: 1. a method for preparing a loaded nano zero-valent iron continuous flow micro-reactor, which involves: a. subjecting to ultrasonic dispersion of graphene oxide in deionized water, and adding pyrrole monomer and sodium lauryl sulfate to obtain a homogeneous electrolyte solution A; b. taking a stainless steel tube, connect one end to a syringe, and immerse the other end in electrolyte A, deliver electrolyte A to the stainless steel tube through the syringe, use the stainless steel tube as the anode, and take the stainless steel wire as the cathode for dynamic electrochemical deposition and depositing the rGO/PPy film on the wall to obtain the rGO/PPy microreactor; c. taking ferrous sulfate solution as electrolyte B, using rGO/PPy microreactor as cathode, stainless steel wire as anode, and carrying out dynamic electrochemical deposition to deposit nZVI on the surface of rGO/PPy film, to rGO/PPy /nZVI microreactor; and 2. a method for using loaded nano zero-valent iron continuous flow micro-reactor, which involves: transporting the p-nitrophenol reaction solution and hydrogen peroxide through the rGO/PPy/nZVI microreactor, and collecting the reaction effluent at the other end of the microreactor, where the p-nitrophenol reaction solution concentration is 10-50mg/L, hydrogen peroxide concentration is 6.52-13.04 millimole/L, the pH of the system is 2-4, and the flow rate is 0.2-0.5 mL/minutes.