A significant global issue that exacerbates environmental harm and health issues is the decline in air quality. When it comes to preserving sustainability and attaining high efficiency under ambient conditions, conventional air purification techniques frequently fall short. A novel family of catalysts known as quantum-catalyst materials has surfaced, using quantum mechanical events to propel the degradation of pollutants with exceptional efficiency. These materials provide improved light absorption, charge carrier production, and reactive species synthesis by utilizing phenomena including electron tunneling, quantum confinement, and surface plasmon resonance, which leads to greater catalytic performance. The fundamentals of quantum catalysis, the categorization and effects of common air pollutants, and the synthesis and characteristics of important quantum-catalyst materials like titanium dioxide, noble metal nanoparticles, metal oxides, and carbon-based hybrids are all thoroughly reviewed in this chapter. Alongside the real-world applications of these materials in indoor air purification systems, self-cleaning coatings, and automotive applications, the intricate mechanisms and kinetics of pollutant degradation are examined. The chapter concludes with a discussion of the potential for widespread use of quantum catalysts in sustainable air quality management, as well as their limitations and future trends.