Green SBA-15 as a Fenton Catalytic Support for Efficient Degradation of Indigo Carmine

Green mesoporous SBA-15 was synthesized by using corn stack ash (CSA), a new renewable silica source, as the main raw material. 80 wt% sodium silicate solution from CSA mixed with tetraethyl orthosilicate (TEOS) solution, and fi nally after hydrothermal process, SBA- 15 obtained. Subsequently, iron metal incorporated into prepared used an effi cient Fenton catalyst for degradation of indigo carmine (IC) under various conditions. Effects parameters process: initial pH, H2O2 concentration, Fe content, reaction temperature were studied. It observed that Fe2O3/80CSBA demonstrated good activity not only wide range pH (both acidic basic conditions), but also at room temperature. Using optimum condition, 98% IC removal can be reached within 10 min. Moreover, exhibited long-term stability strong resistance to leaching species, while incorporating 0.5 metal.