|
Type |
Oral Presentation |
Area |
Oral Presentation for Young Physical Chemists II |
Room No. |
Room 305+306 |
Time |
THU 10:00-10:09 |
Code |
PHYS2.O-1 |
Subject |
Fe-oxide nanoparticles/SiO2 as a regenerative organic dye adsorbent |
Authors |
Hyun Ook Seo*, Young Dok Kim1,* Department of Chemical and Energy Engineering, Sangmyung University, Korea 1Department of Chemistry, Sungkyunkwan University, Korea |
Abstract |
Mesoporous SiO2 particles containing Fe-oxide nanoparticles (~10 nm) were prepared by a temperature-regulated chemical vapor deposition and a post-annealing process. The performances of mesoporous SiO2 with and without Fe-oxide nanoparticles towards methylene blue (MB) removal from solution (MB concentration of 5 mg/l) were examined at room temperature under dark conditions. When the Fe-oxide nanoparticles were loaded on SiO2 adsorbents, the initial adsorption capability of the fresh SiO2 particles can be maintained after the regeneration process (400 oC-thermal annealing for 3 hrs). The results of FT-IR analyses of used bare SiO2 and Fe-oxide/SiO2 adsorbents before and after the regeneration process revealed that Fe-oxide nanoparticles were able to catalyze the thermal degradation of adsorbed MB molecules regenerating adsorption sites. The initial adsorption efficiency of SiO2 particles with Fe-oxide nanoparticles can be also fully recovered by a 100 oC-thermal annealing. |
E-mail |
hyun.ook.seo@smu.ac.kr |
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