Activated graphene oxide adsorbent for removing tetracycline and preparation method of adsorbent

The invention discloses a preparation method of an activated graphene oxide adsorbent for removing tetracycline. The preparation method comprises the following steps: according to percentage by mass, namely the ratio of purified graphite oxide to KOH powder of 1 to 4, grinding and uniformly mixing the purified graphite oxide and the KOH powder in an agate mortar so as to obtain mixed powder; adding the mixed powder to a ceramic pipe, then adding to a quartz tube furnace, calcining at 750 DEG C for 2h in N2 protective effect, then reducing temperature at temperature decreasing rate of 30 DEG C/min, and turning off nitrogen when the quartz tube furnace is cooled to room temperature so as to obtain the activated graphene oxide adsorbent for removing tetracycline. The activated graphene oxide adsorbent for removing tetracycline, disclosed by the invention, can improve the specific surface area and the hydrophilicity of the graphene oxide, and greatly improve the adsorption performance of a water solution to tetracycline. The preparation method disclosed by the invention is simple in process, and since a conventional chemical reagent is adopted in a preparing process, cost is saved.