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US 12,337,285 B2Granted
Semipermeable membrane for water treatment, preparing method for the same, and polluted water treatment system including the same
AssigneeResearch & Business Foundation Sungkyunkwan University
InventorsHyungkoun Cho, Youngbeen Kim, Dongsu Kim, Sung Hyeon Jung
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Abstract
The present disclosure relates to a semipermeable membrane for water treatment, including a photoactive layer. The photoactive layer includes a plurality of one-dimensional nano structure bundles and the one-dimensional nano structure is nano-structured so that a surface of the semipermeable membrane for water treatment has a hydrophobicity.
Claims17
A semipermeable membrane for water treatment, comprising:
- a photoactive layer that comprises a photoactive layer surface on which nanorods comprising Sb2X3, where X is S, Se, or Te, are disposed,
- wherein the nanorods are three-dimensionally randomly disposed on the photoactive layer surface,
- wherein a plurality of the nanorods is horizontally disposed on the photoactive layer surface to expose a hydrophobic side of the nanorods,
- wherein a plurality of the nanorods is vertically disposed on the photoactive layer surface to expose an end of the nanorods having a dangling bond,
- wherein the nanorods are oriented on the photoactive layer surface to form a nanostructure accommodating an air cavity between the nanorods to form a hydrophobic surface by the Cassie-Baxter effect that is permeable to a nonpolar solvent but impermeable to a polar solvent,
- wherein the nanorods are horizontally disposed to expose a (h00) plane, a (h01) plane, or a combination thereof;
- and
- the photoactive layer is configured to photodegrade a polluted material upon being irradiated by light.
5 more elements
A semipermeable membrane for water treatment, comprising:
- a first substrate having a surface;
- and
- nanorods comprising Sb2X3, X is S, Se, or Te, disposed on the surface,
- wherein the nanorods are three-dimensionally randomly disposed on the surface,
- wherein a plurality of the nanorods is horizontally disposed on the surface to expose a hydrophobic side of the nanorods,
- wherein a plurality of the nanorods is vertically disposed on the surface to expose an end of the nanorods having a dangling bond,
- wherein the nanorods are oriented on the surface to form a nanostructure accommodating an air cavity between the nanorods on the first substrate to form a hydrophobic surface by the Cassie-Baxter effect,
- wherein the nanorods are disposed to expose a (h00) plane, a (h01) plane, or a combination thereof on the surface of the first substrate;
- the surface of the first substrate is impermeable to a polar solvent while permeable to a nonpolar solvent;
- and
- the nanorods form a photoactive layer that is configured to photodegrade a polluted material in a liquid disposed thereon upon being irradiated by light.
8 more elements
Dependencies are inferred from the claim text.