Samsung Electronics Co., Ltd.

Postech Academy-industry Foundation

Postech Research and Business Development Foundation

Wonyong Choi

Hee-jin Park

Seunghyun Weon

Sungwon Kim

Jee-yeon Kim

Jee Yeon Kim

Sae-mi Kim

Shinbi Lee

Proposed are a photocatalyst, including titanium dioxide particles including titanium dioxide (TiO), a carbon material located on all or part of the surface of the titanium dioxide particles and including at least one selected from the group consisting of graphene, reduced graphene oxide (rGO), and carbon nanotubes (CNTs), and bimetallic nanoparticles supported on the carbon material and including first metal nanoparticles and second metal nanoparticles, and a water treatment method using the same. In the photocatalyst and the water treatment method using the same, the photocatalyst including bimetallic nanoparticles and graphene oxide is prepared, thereby exhibiting high reduction efficiency and high selectivity to nitrogen gas even without the use of an external electron donor.

Photocatalyst comprising bimetallic nanoparticles and graphene oxide for denitrification reaction, and water treatment method using same

Disclosed is a method for manufacturing a photocatalytic filter for air purification. The present manufacturing method comprises the steps of: oxidizing a titanium metal to obtain a nanostructured titanium dioxide (TiO2); adding the nanostructured titanium dioxide to an acidic fluorine-containing solution to allow a reaction to occur therebetween for a predetermined period of time; and, after treatment in the acidic fluorine-containing solution, performing heat treatment on the nanostructured titanium dioxide.

Method for manufacturing photocatalytic filter for air purification

Disclosed is a method for producing a photocatalyst for air cleaning. The present production method comprises the steps of: preparing titanium dioxide (TiO); attaching platinum to a surface of the titanium dioxide; and attaching fluoro to the platinum-attached surface of the titanium dioxide to obtain surface-modified titanium dioxide.

Method for producing photocatalyst and photocatalyst filter for air cleaning

Growing community of inventors

Pohang-si, South Korea

Wonyong Choi