Absorption and Emission of infrared radiation

Absorption of radiant heat by all objects and surfaces will cause the temperature of the object to rise.

while

Emission of infrared radiation will cause the temperature of the object to fall.

In general,

good emitter is a good absorber (of radiant heat)
bad emitter is also a bad absorber (of radiant heat)

Good emitter and absorber:
Dull, black surfaces

Bad emitter and absorber:

Shiny, white surfaces