Methods, systems, and compounds for degrading chlorinated compounds in water. A facile aqueous-based surface treatment of zero-valent iron is provided to increase the reactivity of a zero-valent iron material for degrading chlorinated compounds in the water without the use of a noble metal catalyst. Such a facile aqueous-based surface treatment can be implemented as a surface sulfidation pre-treatment of iron to increase its reactivity towards chlorinated contaminants in water. The disclosed facile aqueous-based surface treatment increases reactivity utilizing sulfur compounds for use in the degradation of the chlorinated compounds in the water.
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