In recognition of their special qualities and wide range of uses, nanomaterials have grown in importance in environmental science. This chapter discusses the various types of nanomaterials, how they are produced, and their use in environmental remediation. It draws attention to the several types of nanomaterials, including those based on metal, carbon, and polymers, and their functional properties and environmental applications. The influence of various synthesis methods on the properties and efficacy of nanomaterials is analysed, encompassing sol–gel, hydrothermal, and chemical vapor deposition techniques. Furthermore, the use of nanomaterials for soil, water and air pollution remediation is investigated, demonstrating their ability to address environmental issues through catalysis, adsorption and degradation. The chapter emphasizes how promising nanomaterials are for improving the efficiency of technologies for environmental cleanup and encouraging long-term approaches to pollution control.