Photocatalyst filter and electronic device comprising same

An electronic device comprising:

• a housing;
• a photocatalyst filter;
• a first sensor provided in the housing and configured to measure a quality of air inside the electronic device;
• a blower fan configured to introduce air into the housing;
• a light source configured to emit light to the photocatalyst filter;
• and
• a processor configured to:
• control the blower fan and the light source,
• determine a degree of contamination of air inside the electronic device based on a first sensor value of the first sensor for a predetermined time period;
• determine a degree of contamination of air outside the electronic device based on a second sensor value of a second sensor that is provided outside of the housing for the predetermined time period;
• and
• recycle the photocatalyst filter based on an amount of increase of the first sensor value being larger than an amount of increase of the second sensor value over the predetermined time period, or based on an amount of decrease of the first sensor value being smaller than an amount of decrease of the second sensor value over the predetermined time period, wherein the first sensor and the second sensor are configured to measure a concentration of a same contaminant in air.