Oxidative Treatment of Rhodamine B Solution on CoOx/sepiolite Catalysts

Thao Nguyen Tien, Dang Van Long, Nguyen Bich Ngoc, Nguyen Thi Nhu
2020 Fine Chemical Engineering  
Sepiolite loaded with different cobalt oxide contents has been prepared by the precipitation method followed by calcination at 410ºC. The synthesized Co-loaded samples were characterized by physical methods using XRD, SEM, BET, and H2-TPR. The obtained solids have a large specific area and good distribution of cobalt oxide nanoparticles on sepiolite carrier. The catalysts were tested for the oxidative removal of rhodamine B solution and found that 1.0 – 3.0 wt.% cobalt ion/sepiolite samples
more » ... piolite samples exhibited the highest decoloration efficiency of rhodamine B (88-90%) in the presence of hydrogen peroxide at room temperature after the treatment of 30 mg/L of RhB solution in 210 minutes.
doi:10.37256/fce.112020283.37-46 fatcat:4bcb73xjazgcrikwa5xvcupod4