| CPC B22F 9/24 (2013.01) [B01J 23/52 (2013.01); B01J 23/72 (2013.01); B01J 35/45 (2024.01); B01J 37/344 (2013.01); B22F 1/054 (2022.01); B22F 1/0553 (2022.01); B01J 2235/10 (2024.01); B01J 2235/30 (2024.01); B22F 2202/11 (2013.01); B22F 2301/10 (2013.01); B22F 2301/255 (2013.01); B22F 2304/054 (2013.01)] | 17 Claims |

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1. A composition, comprising: a nanoparticle having six pointed areas so that the nanoparticle resembles a six-pointed star, wherein a distance from opposing points of the six-pointed star is about 400 to 480 nanometers and a thickness of about 20 to 50 nanometers.
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