The invention relates to an environment-friendly artificial aggregate capable of degrading gas pollutants by
photocatalysis and a preparation method of the environment-friendly artificial aggregate. The gas
pollutant degrading aggregate is composed of a base material core and a
photocatalysis aggregate
coating layer. The production formula of the environment-friendly artificial aggregate includes a base material,
photocatalysis aggregate
coating pulp, organic dispersing agent and the like; the key components include a photocatalyst, functional additives (stabilizing additives, modifying additives, decorative additives), and the like. The preparation method of the environment-friendly artificial aggregate comprises the following steps of: (1), preparing base material particles; (2), preparing photocatalysis aggregate
coating pulp; (3), packaging the surfaces of the base material particles; and (4),
roasting and preserving the heat. The environment-friendly artificial aggregate is strong in practicability, energy-saving and environment-friendly and high in
operability of the implementation method. The product is good in mechanical performances, safe and non-toxic,
corrosion resistant, free of secondary
pollution, capable of degrading and purifying main harmful substances of the gas
pollutant under the excitation of natural light and efficient and lasting in purifying capacity. Besides, the environment-friendly artificial aggregate can be used as the material for being extensively applied to constructing the facilities including a road, a building, an ornament and the like rich in gas pollutants.