The next generation of sustainable design ought to help us reduce the impacts on the environment in a challenge to live more ecologically on day-to-day basis. Architects and designers from all around the world are joining a movement to create buildings that mitigate global warming and climate change. Zero-energy and carbon neutral architecture has emerged as a top priority, although low-energy and low-carbon design is often more readily achieved [4]. The study examines Tripoli as a city-case study that suffers from high levels of toxic gas emissions mainly CO2. It aims to put the basic strategy toward Tripoli zero-carbon city on basis of zero carbon buildings that uses nano-materials technology as a solution.