Metal Sulfide Nanomaterials for Environmental Applications presents the fundamentals necessary to understand the latest developments and possibilities of applied use, specifically for chemical detection/sensing and monitoring in air, soil, and water matrices as well as for chemical reaction engineering purposes (conversion, photocatalysis, adsorption) to facilitate removal of pollutants. Organic contaminants, volatile organic compounds, and heavy metals pose long-term threats to natural ecosystems and human health. Particularly in the last decade, metal sulfide nanomaterials have piqued researchers' interest due to their outstanding physicochemical characteristics that make them amenable to modulation, as well as their qualitative and quantitative structure-activity relationship.