Superhydrophobic polypropylene membrane with fabricated antifouling interface for vacuum membrane distillation treating high concentration sodium/magnesium saline water

Bioinspired Hybrid Micro/Nanostructure Composited Membrane with Intensified Mass Transfer and Antifouling for High Saline Water Membrane Distillation

“…Thus, with the above-mentioned nanometer scale eddy and turbulence, combined with the micrometer scale gap between the fluorinated SiO 2 particle, the potential deposition of the nucleus particles can be hindered when the solution flow generated vapor to go through the gap between the micro/ nanostructure, which achieved an outstanding antifouling of crystal and relevant solid particles during the MD process (shown in Figure 2d, just like the cross-flow filtration function of fish gill). 46 Meanwhile, according to our previous research 15,47 the crystals could autodetach from the membrane surface due to the proper microscale force field and flow pattern. The intensified micro/nanoflow pattern will definitely benefit this autodetachment mechanism.…”

“…Thus, the potential interfacial-inducted nucleation (heterogeneous nucleation, known as nucleation, preferentially occurs on foreign bodies) should be considered when introducing the micro/nanoscale particle into the membrane surface. Herein, the classic model 48,49 of particles on lowering the nucleation barrier can be quantified by an interfacial correlation factor f(m, R′), which is defined as follows 50,15…”

Unprecedented scaling/fouling resistance of omniphobic polyvinylidene fluoride membrane with silica nanoparticle coated micropillars in direct contact membrane distillation

“…These membranes were obtained by the combination of surface patterning and surface modification technologies. So far surface patterning methods include nano-micro fabrication by casting [34,35] or imprinting [36] and nanoparticles coating (SiO2, ZnO and TiO2) [13,[37][38][39][40][41][42], and surface modification involves the coating of the surface with low surface energy materials such as silanization [43,44] and plasma fluorination [45][46][47][48][49][50]. Successes in fouling control and wetting mitigation in MD have been observed [17,18,20,26].…”

Enhanced Pollution Flashover of a Slurry Coalescence Superhydrophobic Coating

“…Superhydrophobic coatings with greater static water contact angles and lower sliding angles are well known for their selfcleaning performances [7,8], which are beneficial for applications in the prevention of pollution [9,10], icing [11,12], and frosting [13,14]. Due to gravity, wind, or an electric field, the separated water droplets on a superhydrophobic surface will slip, merge, or jump away, resulting in a sparse distribution of water and leaving large dry areas [15,16].…”