Method for fabricating hollow metal nano particles and hollow metal nano particles fabricated by the method

A method for fabricating hollow metal nano particles, the method comprising:

• forming a solution by adding a first metal salt, a second metal salt, and a surfactant to a solvent;
• and
• forming hollow metal nano particles by adding a reducing agent to the solution,
• wherein the forming of the solution comprises forming a micelle by the surfactant, and surrounding an outer portion of the micelle with the first metal salt and the second metal salt, and
• the forming of the hollow metal nano particles comprises forming the micelle region to a hollow form,
• wherein a molar ratio of the first metal salt to the second metal salt in the solution is 1:5 to 10:1,
• wherein the solvent is water,
• wherein a concentration of the surfactant in the solution is one time to five times of a critical micelle concentration (CMC) to water, and the hollow metal nano particles have an average particle diameter of 30 nm or less.