This course covers the recent applications of environmentally friendly and green technology for long-term decarbonization (e.g., carbon capture, utilization, and sequestration), green remediation (e.g., detoxification of air pollutants and water pollutants), and sustainable energy (e.g., hydrogen, ammonia, CO2 to fuel), and value-added waste upcycling. The course covers examples of interfacial and catalytic reactions in industry that are environmentally sustainable, in terms of reducing material use (e.g., hazardous solvents), toxic by-product emission, and waste generation. The course will review the underlying principles and new concepts of environmental chemistry as well as material design and fabrication, followed by the discussion of performances and limitations in the context of scientific research and field applications in civil and environmental engineering.