In the Time of Nanoscience, When All Gadgets and Developments Are Decreasing and Littler With Improved Properties Catalysis Is a Significant Area of Research. With This In Mind, We Present a Summary of the Applications of Nanoscience In Catalysis, Energy Conversion, and Energy Conservation. In the Present Study We Are Trying to Condense In-Writing Knowledge That Is Beneficial to Individuals to Use Nano-Estimated Inspiration In Day-To-Day Life. Improvement of Synergistic Properties Is Discussed Here Due to Reduced Impetus Size to Nano Scale.