Synthesis, characterization of titania supported on mesoporous MCM-41 and its application for the removal of methylene blue | ||
| Delta University Scientific Journal | ||
| Volume 5, Issue 2, September 2022, Pages 321-339 PDF (1.02 M) | ||
| Document Type: Original research papers | ||
| DOI: 10.21608/dusj.2022.275549 | ||
| Authors | ||
| Reda Salama; Sohier Abd Elhakim* ; Salem Samra* ; Shady El-Dafrawy* ; Amr Awad Ibrahim* ; Awad Ahmed* | ||
| Abstract | ||
| Solid acid substance of MCM-41 prepared by sol-gel method followed by incorporation of TiO2 within the mesochannels through a simple and effective impregnation method. TiO2 loaded on MCM-41 were synthesized at room temperature using tetraethoxysillane (TEOS), Cetyltrimethylammonium bromide (CTAB) as template and titanium (IV) isopropoxide (TIP) as titanium source. The resultant mesoporous TiO2/MCM-41 samples were calcined at 550 0C. The resultant samples were characterized using X-ray diffraction patterns (XRD), BET measurements, FT-IR and high-resolution transmission electron microscopy (TEM). Nitrogen adsorption-desorption measurements were used to measure surface area and average pores diameter at -1960C. The TiO2/MCM-41 with higher Ti/Si ratio shows low structural integrity and the formation of Ti-oxide species leading to a considerable decrease in surface area. The activities of TiO2/MCM-41 for adsorption of methylene blue (MB) studied in details. Adsorption increase with the modification of MCM-41 by TiO2 up to 25% of TiO2 then decreased. The samples of 25% TiO2 loaded on MCM-41 show higher catalytic activity. | ||
| Keywords | ||
| TiO2 loaded MCM-41; sol-gel; TEOS; water treatment; Methylene Blue | ||
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