CO2 absorption enhancement by Al2O3 nanoparticles in NaCl aqueous solution

► CO2 solubility of Al2O3/NaCl aqueous solution nanofluids is evaluated. ► GA(Gum Arabic) is a good dispersion stabilizer in NaCl aqueous solution. ► The cluster size plays an important role in the solubility enhancement. ► The nanoparticles contribute to the enhancement of gas-to-liquid mass transfer.