| Autor: |
El-Khouly, Sahar M., Fathy, Nady A., Farag, Hala K., Aboelenin, Reham M.M. |
| Zdroj: |
Desalination & Water Treatment; January 2020, Vol. 174 Issue: 1 p344-353, 10p |
| Abstrakt: |
This work aims to assess the adsorption and catalytic wet oxidation (CWO) performance of In2O3supported on carbonaceous nanohybrid (In2O3-CNH). CNH was prepared from carbon xerogel reinforced with graphene oxide through sol-gel of resorcinol–formaldehyde then followed by carbonization at 500°C for 2 h. The morphological, chemical and textural properties of nanohybrids obtained were determined using scanning electron microscopy/energy-dispersive X-ray spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy and N2gas adsorption at –196°C measurements. The adsorption efficiency of CNH and In2O3-CNH samples toward methyl orange dye (MO) was studied. CWO experiments over the In2O3-CNH catalyst were performed at different variables like the temperature, pH of the solution and initial dye concentrations. The reusability of the nanohybrid catalyst was employed also. Adsorption results showed that In2O3-CNH possesses larger adsorption capacity (58.8 mg/g) than that of CNH (32.2 mg/g). The most effective catalytic oxidation performance of In2O3-CNH was attained at a temperature of 40°C, pH 4 and initial MO concentration of 20 mg/L to degrade fully the dye within 30 min. Results of reusability showed excellent catalytic performance for In2O3-CNH during four CWO cycles, indicating superior degradation toward MO dye up to 88% till 180 min at the fourth CWO run. Overall, the obtained In2O3-CNH has higher adsorptive and catalytic activity than that of CNH individually, confirming that In2O3nanoparticles played a key role as reactive sites at the surface of CNH |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
