Platinum, atomic number 78, is listed with the symbol Pt. Platinum nanoparticles are gained in the form of colloid and suspension. Platinum nanoparticles are obtained in the size between 2 to 100 nanometers. Platinum nanoparticles have a large surface area. By reducing hexachloroplatinate, these nanoparticles can be quickly gained. Platinum nanoparticles are being used successfully to prepare the nanowires and plastics. Similarly, the use of platinum nanoparticles in the industry of textiles and coatings is of significant importance. Due to radioactive properties, platinum nanoparticles are one of the utmost essential elements which are used in the process of cancer therapy. Platinum nanoparticles have crucial characteristics that are beneficial in the processes of electrocatalyst and catalytic converter. Its uses cannot be reduced in the above fields. It can also be the part of sensing and photovoltaic application. The use of platinum nanoparticles in the field of solar energy cannot be kept away in the list of applications.