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• MnFe 2 O 4 @TiO 2 -rGO adsorbent was successfully prepared. • MnFe 2 O 4 @TiO 2 -rGO composite has excellent insoluble property under acidic conditions. • MnFe 2 O 4 @TiO 2 -rGO composite presents excellent adsorption properties for ciprofloxacin (CIP) and Cu2+. • Magnetic separation technology was used to separate MnFe 2 O 4 @TiO 2 -rGO with pollutant from aqueous solution. • MnFe 2 O 4 @TiO 2 -rGO composite presents excellent regeneration–reuse property. An efficient nanocomposite adsorbent of magnetic core-shell MnFe 2 O 4 @TiO 2 nanoparticles loaded on reduced graphene oxide (MnFe 2 O 4 @TiO 2 -rGO) was successfully synthesized via a hydrothermal followed by sol-gel route. By using the ciprofloxacin (CIP) and Cu2+ as target pollutants, the adsorption properties of MnFe 2 O 4 @TiO 2 -rGO were systematically learned as well as the factors dependance on the adsorption properties, such as temperature, adsorption time, initial pollutant concentration and pH. The adsorption thermodynamics and kinetics for CIP and Cu2+ were also explored. According to the experimental results, the maximum adsorption capacities for CIP and Cu2+ are 122.87 and 225.99 mg/g, respectively. Their adsorption behaviors conform to the Langmuir isotherm and follow a pseudo-second-order kinetic model at all temperature. It is proposed that adsorption is spontaneous and endothermic chemisorption. Furthermore, the MnFe 2 O 4 @TiO 2 -rGO adsorbent can be easily recycled from polluted solution by external magnetic field. After the adsorbent recycled 6 times, the adsorption capacities for CIP and Cu2+ could still reach up to 76.56 and 118.45 mg/g, respectively. Based on the excellent adsorption performance, magnetic separation and recycling performance, therefore, it is highly believed that our MnFe 2 O 4 @TiO 2 -rGO adsorbent has huge potential applications in the field of water purification. [ABSTRACT FROM AUTHOR]