Attapulgite-based antibacterial agent and preparation method thereof

The invention relates to an attapulgite-based antibacterial agent and a preparation method thereof. The attapulgite-based antibacterial agent is prepared by the steps of firstly, loading anatase phase nanometer titanium dioxide on the surface of attapulgite and secondly acting with pyroligneous liquor containing antibacterial metal ions. The anatase phase nanometer titanium dioxide loaded by the antibacterial agent is high in purity, uniform in particle size, uniform in distribution, wide in titanium source and low in cost. The anatase phase nanometer titanium dioxide in the antibacterial agent is loaded on the surface of the attapulgite, antibacterial metal ions are capable of replacing metal ions in attapulgite lattices, the pyroligneous liquor can be adsorbed in a duct of the attapulgite, and therefore, the attapulgite-based antibacterial agent has an excellent and long-acting antibacterial effect suitable for various environments; the pyroligneous liquor as the natural antibacterial agent is added to the