Abstract: Mesoporous CoAl2O4 spinel has been successfully synthesized by evaporation-induced self-assembly（EISA） method with aluminum nitrate and cobalt nitrate as inorganic precursors，triblock copolymer pluronic F-127 as surface active agent. X-ray diffraction（XRD） pattern showed that the sample was single-phase cubic material with the spineltype structure.Specific surface area and porous size of the samples sintered under different temperatures were determined by nitrogen adsorption-desorption measurement.It was found that the sample sintered under 650 ℃ had the biggest surface area，and the surface area and pore size were 89.1 m2/g and 7.8 nm，respectively.The CoAl2O4 spinel powders displayed bright blue color with a triple absorption peak around 545，585，and 625 nm by UV-visible spectrometer.

Key words: evaporation-induced self-assembly, spinel, mesoporous cobalt aluminate, nanomaterial