摘要:
A method of manufacturing a hydrophilic membrane and hydrophilic membranes having improved antifouling property using a supercritical fluid or a subcritical fluid. The method involves combining a coating solution from a hydrophilic group-containing monomer, an initiator, a cross-linking agent and a supercritical fluid or subcritical fluid in a high pressure solution vessel and transferring the coating solution to a membrane in a high pressure coating vessel, coating the surfaces and micropores of the membranes through cross-linking polymerization reactions. Non-reacted coating material is returned to the high pressure solution vessel. The membranes are removed from the coating vessel, cleaned and dried. The hydrophilic membrane manufactured by the present invention is excellent in properties of hydrophobic membranes such as thermal stability, chemical stability and mechanical strength, and surfaces and micropores of the membranes are uniformly coated.
摘要:
A method of manufacturing a hydrophilic membrane and hydrophilic membranes having improved antifouling property using a supercritical fluid or a subcritical fluid. The method involves combining a coating solution from a hydrophilic group-containing monomer, an initiator, a cross-linking agent and a supercritical fluid or subcritical fluid in a high pressure solution vessel and transferring the coating solution to a membrane in a high pressure coating vessel, coating the surfaces and micropores of the membranes through cross-linking polymerization reactions. Non-reacted coating material is returned to the high pressure solution vessel. The membranes are removed from the coating vessel, cleaned and dried. The hydrophilic membrane manufactured by the present invention is excellent in properties of hydrophobic membranes such as thermal stability, chemical stability and mechanical strength, and surfaces and micropores of the membranes are uniformly coated.
摘要:
A method of fabricating a transparent electrode for use in a quantum dot sensitized solar cell, and a quantum dot sensitized solar cell fabricated according to the method are provided. According to the fabrication method, (S1) quantum dot precursor is introduced into a high pressure storage vessel and a quantum dot precursor is dissolved using subcritical fluid or supercritical fluid; (S2) the quantum dot precursor fluid prepared at (S1) is transported to contact with a conductive thin layer substrate comprised of a metal oxide placed in a high pressure reaction vessel, thereby causing the quantum dot precursor to be adsorbed in the metal oxide thin layer; (S3) non-adsorbed quantum dot precursor fluid of (S2) is transported and thus recovered to the high pressure storage vessel together with the subcritical fluid or supercritical fluid; and (S4) the subcritical fluid or supercritical fluid is removed from the high pressure reaction vessel, and the quantum dot precursor, adsorbed at (S2), is reacted with a second element which constitutes the quantum dot or a compound comprising the second element.
摘要:
Disclosed are a method of producing metal nanoparticles continuously, and metal nanoparticles produced thereby. The method comprises: (a) preparing a metal precursor solution by dissolving a metal precursor in alcohol; (b) continuously putting the metal precursor solution into a reactor having supercritical conditions, thereby producing metal nanoparticles; (c) cooling the solution obtained in step (b); and (d) separating and collecting the metal nanoparticles from the solution obtained in step (c).
摘要:
A method for fabricating graphene sheets or graphene particles includes (a) dispersing graphene oxide in an alcohol solution to prepare a graphene oxide dispersion solution, (b) reducing the graphene oxide dispersion solution under a supercritical condition to prepare graphene sheets or graphene particles, each of which is as a cluster of the graphene sheets, and (c) separating the graphene sheets or graphene particles, followed by washing and drying, and a method for fabricating a graphene film is configured to fabricate a graphene film in form of a thin film using the graphene sheets or graphene particles fabricated according to the method.
摘要:
Disclosed is a method for producing a renewable fuel using a supercritical fluid. The method includes charging a supported catalyst into a continuous reactor and adding a catalyst activating material thereto to activate the supported catalyst, feeding an oil or fat, hydrogen and a supercritical fluid into the continuous reactor and allowing hydrogenation and hydrodeoxygenation reactions of the oil or fat in the supercritical fluid to proceed, and collecting a renewable fuel as the reaction product. The method enables the production of an oxygen-free renewable fuel in a higher yield at a lower hydrogen pressure and a lower reaction temperature than conventional methods for producing renewable fuels.
摘要:
A method for synthesizing lithium titanium oxide-based anode active material nanoparticles, and more particularly, a method for synthesizing lithium titanium oxide-based anode active material nanoparticles using a supercritical fluid condition is disclosed herein. The method may include (a) preparing a lithium precursor solution and a titanium precursor solution, (b) forming lithium titanium oxide-based anode active material nanoparticles by introducing the lithium precursor solution and titanium precursor solution into an reactor at a supercritical fluid condition, and (c) cleaning and drying the nanoparticles, and may further include (d) calcinating the nanoparticles at 500-1000° C. for 10 minutes to 24 hours after the step (c).
摘要:
Provided is a member or content search method in a virtual private community (VPC) network including at least one of a first VPC including communication devices owned by a predetermined user, a second VPC that may be positioned in an upper layer of the first VPC, and a third VPC that may be positioned in an upper layer of the second VPC, the method including receiving, by one of the communication devices, a search request comprising one of VPC identifiers of a user, verifying a VPC corresponding to the VPC identifiers that may be included in the search request, in response to the search request, and searching for members included in the verified VPC, a VPC positioned in a lower layer of the verified VPC, or contents owned by the members included in the verified VPC.
摘要:
Provided is a member or content search method in a virtual private community (VPC) network including at least one of a first VPC including communication devices owned by a predetermined user, a second VPC that may be positioned in an upper layer of the first VPC, and a third VPC that may be positioned in an upper layer of the second VPC, the method including receiving, by one of the communication devices, a search request comprising one of VPC identifiers of a user, verifying a VPC corresponding to the VPC identifiers that may be included in the search request, in response to the search request, and searching for members included in the verified VPC, a VPC positioned in a lower layer of the verified VPC, or contents owned by the members included in the verified VPC.
摘要:
Disclosed are an underwater moving apparatus and a moving method thereof. The underwater moving apparatus of an exemplary embodiment of the present invention includes a body; a propelling device installed on a rear side of the body; a thruster unit including an up and down directional thruster and a left and right directional thruster installed at the body; and a plurality of leg units positioned at both side portions of the body and including a multi-joint module.