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Dyestuffs and heavy metal ions in water are seriously harmful to the ecological environment and human health.Three-dimensional (3D) flowerlike Fe(OH)3 microspheres were synthesized through a green yet low-cost injection method,for the removal of organic dyes and heavy metal ions.The Fe(OH)3 microspheres were characterized by thermal gravimetric analysis (TGA),Fourier transform infrared (FT-IR),and transmission electron microscopy (TEM) techniques.The adsorption kinetics of Congo Red (CR) on Fe(OH)3 microspheres obeyed the pseudo-second-order model.Cr6+ and Pb2+ adsorption behaviors on Fe(OH)3 microspheres followed the Langmuir isotherm model.The maximum adsorption capacities of the synthesized Fe(OH)3 were 308,52.94,and 75.64 mg/g for CR,Cr6+,and Pb2+ respectively.The enhanced adsorption performance originated from its surface properties and large specific surface area of 250 m2/g.The microspheres also have excellent adsorption stability and recyclability.Another merit of the Fe(OH)3 material is that it also acts as a Fenton-like catalyst.These twin functionalities (both as adsorbent and Fenton-like catalyst) give the synthesized Fe(OH)3 microspheres great potential in the field of water treatment.