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iron silicate, also known as fayalite, is used in industrial metal refining and recycling processes. It is produced by slow cooling in large cast iron pots to a high-quality, crystalline rock with edge lengths of up to 1,000 mm. It is a useful and economic alternative to natural rocks, with the advantage that it can be shaped into commercial grain sizes and weight classes.

The atomic structure of iron silicate (Fe2SiO4) is determined by the shape and bonding pattern of a series of tetrahedra that are made up of silicon and oxygen. These tetrahedra form chains and sheets that are bonded together in different ways to produce the physical properties of the minerals, such as hardness, cleavage, and melting temperature.

X-ray diffraction is an excellent tool for determining the crystal structure of a mineral. It is especially effective for silicates, since they often take many different atomic shapes.

Zinc-iron silicate was synthesized by dissolving Zn(NO3)2, Fe(NO3)3, and Na2SiO3 in 1 L ultra-pure water and then slowly titrated with 0.2 mol L-1 of a solution of Na2SiO3. SEM, EDS, XRD, FTIR, and XPS analyses showed that the synthesized zinc-iron silicate was mainly composed by Fe-Si, Zn-Si binary oxides, ZnO, and Fe2O3.

A heterogeneous catalytic ozonation process was used to investigate the removal efficiency of 4-chloronitrobenzene (AA) from aqueous solutions using amorphous zinc-iron silicate. Various AA removal efficiencies were obtained by varying the Zn/Fe molar ratio of the catalyst. The highest AA removal was achieved using a catalyst with a 1 : 1 Zn/Fe molar ratio.