▎ 摘　　要

NOVELTY - The utility model claims an acid liquid collecting device for preparing single-layer graphene oxide, relating to the technical field of recycling oxidized graphene acid liquid, comprising a filter tank, a waste liquid tank, a liquid tank and a recycling tank, the bottom liquid outlet end of the filter tank is provided with a first branch pipe; the bottom of the first branch pipe is connected with a second branch pipe and a third branch pipe; the top right side of the acid tank is provided with a fourth branch pipe; the inner cavity of the filter tank is provided with a filter screen; the top part of the filter tank is provided with a liquid inlet; the bottom of the waste liquid tank is provided with a first liquid outlet pipe; the middle of the top of the acid liquid tank is provided with a stirring motor; the bottom of the stirring motor is provided with a stirring blade through the stirring shaft; the bottom of the inner cavity of the acid liquid tank is provided with an electric heater; the bottom of the acid liquid tank is provided with a second liquid outlet pipe; the outer part of the recycling box is provided with a water bath tank; the bottom of the recycling box is provided with a third liquid outlet pipe. The utility model is capable of collecting diluted hydrochloric acid for washing in the preparation process of graphene oxide, increasing the use time of diluted hydrochloric acid, and reducing the production cost.