Provided is a small air purification device that can improve the removal performance of acetaldehyde and can be downsized. In the small air purification apparatus 1 using a photocatalyst, the housing 2, the photocatalyst member 3 including titanium oxide disposed in the housing 2, and the photocatalyst member 3 disposed in the housing 2 are irradiated with ultraviolet light. The light emitting unit 4 including a plurality of LED elements 43 and the fan 5 for circulating the air in the housing 2 are included.アセトアルデヒドの除去性能を向上させ、しかも小型化を図ることができる小型空気浄化装置を提供する。光触媒を用いた小型空気浄化装置１において、筐体２と、筐体２内に配置され酸化チタンを含む光触媒部材３と、筐体２内に配置され光触媒部材３に対して紫外光を照射し複数のＬＥＤ素子４３を含む発光部４と、筐体２内の空気を流通させるファン５と、を含むようにした。
