公开(公告)号：US20190227016A1

公开(公告)日：2019-07-25

申请号：US16352620

申请日：2019-03-13

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Il-Doo KIM ,  Ji Su JANG ,  Sang-Joon KIM ,  Seon-Jin CHOI

IPC: G01N27/12 ,  C01G45/02 ,  C01G23/00 ,  C01G9/02 ,  C01B32/168 ,  C01G19/02 ,  C01G49/02

Abstract: Disclosed are a gas sensor member, a gas sensor using the same, and manufacturing methods thereof, and specifically, a gas sensor member using a one-dimensional porous metal oxide nanotube composite material having a double average pore distribution in which mesopores (0.1 nm to 50 nm) and macropores (50 nm to 300 nm) are simultaneously formed on the surface of a nanotube through decomposition of a spherical polymer sacrificial template and continuous crystallization and diffusion of a metal oxide and a nanoparticle catalyst embedded in an apoferritin is uniformly loaded in the inside and on the outer wall and inner wall of a one-dimensional metal oxide nanotube through a high-temperature heat treatment, a gas sensor using the same, and manufacturing methods thereof are disclosed.

公开(公告)号：US20190154645A1

公开(公告)日：2019-05-23

申请号：US16257354

申请日：2019-01-25

Applicant: Korea Advanced Institute of Science and Technology

Inventor： II-Doo KIM ,  Sang-Joon KIM ,  Seon-Jin CHOI

IPC: G01N31/10 ,  C04B35/622 ,  D01D5/00 ,  D01F9/10 ,  B82Y30/00

Abstract: The inventive concepts relate to a member for a gas sensor, a gas sensor using the same and a manufacturing method thereof, and more particularly, to a member for a gas sensor using a one-dimensional metal oxide nanofiber complex material containing hetero nanoparticle catalysts synthesized using apo-ferritins, a gas sensor using the same, and a manufacturing method thereof.According to embodiments of the inventive concepts, apo-ferritins containing hetero nanoparticle catalysts are mixed with an electrospinning solution, the mixture solution is electrospun to form complex nanofibers, and then a high-temperature thermal treatment process is performed to remove the apo-ferritins. Thus, the hetero nanoparticle catalysts are uniformly fastened to an inside and a surface of one-dimensional metal oxide nanofibers to form a member for a gas sensor. As a result, the member for a gas sensor has a high-sensitivity characteristic capable of sensing a very small amount of a gas and excellent selectivity capable of sensing various gases. In addition, a catalyst effect is maximized by the hetero nanoparticle catalysts uniformly distributed without aggregation. Furthermore, the member for a gas sensor and the gas sensor using the same can be mass-produced by a process method capable of effectively forming pores and of fastening high-performance catalysts.

公开(公告)号：US20160077069A1

公开(公告)日：2016-03-17

申请号：US14855975

申请日：2015-09-16

Applicant: Korea Advanced Institute of Science and Technology

Inventor： II-Doo Kim ,  Sang-Joon KIM ,  Seon-Jin CHOI

IPC: G01N31/10 ,  D01D10/02 ,  D01F9/10 ,  D01D5/00

CPC classification number: G01N31/10 ,  B82Y30/00 ,  C04B35/62227 ,  C04B35/62231 ,  D01D5/0038 ,  D01F9/10

Abstract: The inventive concepts relate to a member for a gas sensor, a gas sensor using the same and a manufacturing method thereof, and more particularly, to a member for a gas sensor using a one-dimensional metal oxide nanofiber complex material containing hetero nanoparticle catalysts synthesized using apo-ferritins, a gas sensor using the same, and a manufacturing method thereof.According to embodiments of the inventive concepts, apo-ferritins containing hetero nanoparticle catalysts are mixed with an electrospinning solution, the mixture solution is electrospun to form complex nanofibers, and then a high-temperature thermal treatment process is performed to remove the apo-ferritins. Thus, the hetero nanoparticle catalysts are uniformly fastened to an inside and a surface of one-dimensional metal oxide nanofibers to form a member for a gas sensor. As a result, the member for a gas sensor has a high-sensitivity characteristic capable of sensing a very small amount of a gas and excellent selectivity capable of sensing various gases. In addition, a catalyst effect is maximized by the hetero nanoparticle catalysts uniformly distributed without aggregation. Furthermore, the member for a gas sensor and the gas sensor using the same can be mass-produced by a process method capable of effectively forming pores and of fastening high-performance catalysts.

Abstract translation: 本发明构思涉及一种用于气体传感器的构件，使用该气体传感器的气体传感器及其制造方法，更具体地说，涉及一种使用含有杂质纳米颗粒催化剂的一维金属氧化物纳米纤维复合材料的气体传感器构件 使用载脂蛋白，使用其的气体传感器及其制造方法。 根据本发明构思的实施方案，将含有异质纳米颗粒催化剂的载脂蛋白铁蛋白与静电纺丝溶液混合，将该混合溶液静电纺丝以形成复合纳米纤维，然后进行高温热处理工艺以除去载脂蛋白。 因此，异质纳米颗粒催化剂被均匀地紧固到一维金属氧化物纳米纤维的内部和表面，以形成气体传感器的构件。 结果，用于气体传感器的部件具有能够感测非常少量气体的高灵敏度特性和能够感测各种气体的优异的选择性。 此外，通过均匀分布而不聚集的杂纳米颗粒催化剂使催化剂效果最大化。 此外，气体传感器用构件和使用该气体传感器的气体传感器可以通过能够有效地形成孔隙和紧固高性能催化剂的方法来批量生产。