Solubilizing degradation agent for nitrobenzene in water as well as preparation method and application of solubilizing degradation agent

The invention discloses a solubilizing degradation agent for nitrobenzene in water as well as a preparation method and application of the solubilizing degradation agent. The preparation method comprises the following steps: completely dissolving ferrous sulfate in an ethanol solution to obtain a ferrous sulfate solution; the preparation method comprises the following steps: sequentially adding a sodium hydroxide solution and a sodium borohydride solution into a ferrous sulfate solution, fully stirring to obtain a mixture A, adding a sodium dithionite solution into the mixture A, carrying out ultrasonic oscillation, sequentially cleaning with deionized water and absolute ethyl alcohol, and removing supernate to obtain a nano-iron suspension; the nano-iron suspension is frozen and dried to obtain the solubilizing degradation agent for nitrobenzene in water, and the obtained solubilizing degradation agent for nitrobenzene in water can effectively achieve the purpose of treating nitrobenzene polluted underground