Patent ID: 7629293

Claim:
A manufacturing method of silver-supporting bamboo charcoal (BC/Ag) comprising steps of: mixing bamboo charcoal powder with a surfactant and alginic acid sodium salt to activate the bamboo charcoal powder; inputting activated bamboo charcoal powder into ammoniacal silver nitrate solution ([Ag(NH 3 )2NO 3 (aq)) at room temperature to compose a mixture, wherein the ammoniacal silver nitrate solution is made by mixing 28 wt % ammonia and 72 wt % silver nitrate, wherein weight ratio of the bamboo charcoal powder and the silver nitrate molecules in the ammoniacal silver nitrate solution has a range of 1:1 to 1:6; dropping a diluted hydrazine solution into the mixture and keeping the mixture reacting at room temperature and nitrogen atmosphere; washing with deionized water and ethanol; and drying to obtain silver supporting bamboo charcoal (BC/Ag) particles.