Research Of Cu-carrying (Ag-carrying) Attapulgite Inorganic Antibacterial Agent And The Properties

The researches about the Cu-carrying antibacterial agents and Ag-carrying antibacterial agents by using attaulgite as the carrier were done in this thesis. The results showed that: 1. To be used as the I carrier, crude attapulgite should be purified. 2. Being treated by HC1 acid solution, the attapulgite was turned into the II carrier with higher absorbing ability, and could also be bleached. 3: The better process conditions for Cu-carrying was that the II carrier was dipping into the 0.15mol/L copper ions solution in a 90 ℃ water bath for 6 hours under the pressure of 0.04~0.02Mpa. The better process for Ag-carrying was that the II carrier was dipping into the 0.03mol/L silver ions solution in a 60℃ water bath for 5 hours under the pressure of 0.04~0.02Mpa.Properties research showed: 1. The made inorganic antibacterial agents were efficacious for bacillus coli and staphylococcal bacteria. 2.In static water, the antibacterial agents could be slow-released well. 3. The Cu-carrying antibacterial agent powder had better light stability than Ag-carrying agent powder.XRD, infrared analysis and atomic absorption spectrophotometer results showed that, the copper and silver existed in the form of ions in the inorganic antibacterial agents, the carrier retained the original crystal structure of attapulgite, and other abilities were still remained.