Provided is a refrigerator including a heat-insulating main body (101) which is formed of a heat-insulating material and includes storage compartments (102, 103, 104, 105, 106) formed inside, doors (107, 108, 109, 110, 111) which are provided at an opening of the heat-insulating main body, a cooling unit (115) which cools air in the heat-insulating main body (101) to generate cool air, and a cool-air circulation path along which the cool air circulates between the storage compartments (102, 103, 104, 105, 106). The refrigerator (100) includes, in the cool-air circulation path, a support (201) which supports a photocatalyst and an irradiation unit (202) which irradiates the support with excitation light which excites the photocatalyst.
