The invention discloses a
nano silicon dioxide oil-water separation membrane and a preparation method thereof.The preparation method comprises the following steps that S1, a Glue gel solution is added into an absolute ethyl
alcohol solution, the Glue gel solution is diluted through
electromagnetic stirring, and a diluted gel solution is obtained; s2,
fumed silica nanoparticles are added into deionized water, mechanical stirring is performed,
ultrasonic dispersion is performed to enable the
fumed silica nanoparticles to be uniformly dispersed, and a
silica suspension is obtained; s3, the cleaned stainless steel mesh is subjected to
laser etching treatment, and a needed base body is obtained; and S4, soaking a substrate in the prepared gel solution, taking out,
drying, soaking in the prepared
silicon dioxide suspension, taking out,
drying, annealing, and depositing
silicon dioxide on the surface of the substrate to obtain the
nano silicon dioxide oil-water separation membrane. The prepared
nano silicon dioxide oil-water separation membrane has the advantages of high separation efficiency, high
underwater oil
contact angle, high stability, wide applicability and the like, can be widely applied to oil-water separation treatment, and improves the treatment efficiency.