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Mesostructured iron oxides(MIOs) were nanocasted from a plugged hexagonal templated silica(PHTS) with a Brunauer-Emmett-Teller(BET) surface area of 694 m 2 /g.Results of X-ray diffraction(XRD),transmission electron microscopy(TEM) and N 2 adsorption-desorption suggest that the nanocasted MIOs are synthetic hematite(α-Fe2O3) with a wormhole-like mesoporous network.As(V) adsorption test shows that the selected MIO-MIO-500(calcinated at 500 °C) with a BET surface area of 82 m 2 /g has a maximum adsorption capacity of 5.39 mg/g for As(V),which is 2.5 times as large as that of natural hematite adsorbent.The study suggests that MIOs could be potentially used as the adsorbent of As(V) in wastewater.
Mesostructured iron oxides (MIOs) were nanocasted from a plugged hexagonal templated silica (PHTS) with a Brunauer-Emmett-Teller (BET) surface area of 694 m 2 / g. Results of X-ray diffraction (XRD) TEM) and N2 adsorption-desorption suggest that the nanocasted MIOs are synthetic hematite (α-Fe2O3) with a wormhole-like mesoporous network. As (V) adsorption test shows that the selected MIO- MIO- 500 (calcinated at 500 ° C ) with a BET surface area of 82 m 2 / g has a maximum adsorption capacity of 5.39 mg / g for As (V), which is 2.5 times as large as that of natural hematite adsorbent. The study suggests that MIOs could be potentially used as the adsorbent of As (V) in wastewater.