| 摘要 |
FIELD: production of sorbents. SUBSTANCE: sorbents used for analytical and medical purposes, for fine cleaning of solutions, extraction of metals from industrial and household wastes, sea water, etc. are prepared through electrochemical precipitation of titanium or zirconium hydroxide onto porous carbon material from solution containing titanium or zirconium salt with metal concentration 100-5000 mg/l in 0.1 M solution of sulfuric acid and/or magnesium sulfate or sodium chloride. In this case, carbon material is charged to potential values distanced from stationary dipping potentials by -0.1 to -0.9 V with velocity 0.04- 0.1 mV/s and maintained at reached potential during 1-4 h. In a particular case, precipitation of titanium hydroxide is conducted in presence of hydrogen peroxide. EFFECT: enabled controlling precipitation process in electrode layer and thereby controlling uniform precipitation of hydroxide film on carrier surface. 4 cl, 1 tbl, 14 ex |
