公开(公告)号：US20240173710A1

公开(公告)日：2024-05-30

申请号：US18319760

申请日：2023-05-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Su Keun KUK ,  Hyun Chul LEE ,  Sang Min JI ,  Sungwoo KANG ,  Dong Sik YANG

IPC: B01J35/00 ,  A61L9/20 ,  B01J35/02

CPC classification number: B01J35/004 ,  A61L9/205 ,  B01J35/0013 ,  B01J35/023 ,  A61L2101/02

Abstract: A p-n heterojunction photocatalyst, an air purifier including the p-n heterojunction photocatalyst, and a method of preparing the p-n heterojunction photocatalyst. The p-n heterojunction photocatalyst includes a granule type composite which includes: first compound particles; and second compound particles on at least a portion of surfaces of the first compound particles, wherein the composite has a size of about 0.9 μm to about 5 μm based on a major axis, a standard deviation of the size is about ±0.9 μm or less, and upon exposure to energy irradiation, the composite generates a reactive oxygen species of singlet oxygen (1O2) to induce photolysis of gaseous pollutants.