Method for preparing silver nano-rings

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United States of America Patent

PATENT NO 11511345
APP PUB NO 20210138549A1
SERIAL NO

17252739

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Abstract

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This invention relates to the nano metal material preparation technology field, especially to the preparation method of one kind, of nano-rings. This invention uses polyvinyl pyrrolidone of different molecular weights as surface-protecting agent and dissolves silver nitrate in the low molecular weight polyvinyl pyrrolidone ethylene glycol solvent under frozen conditions. Frozen conditions can slow down or inhibit silver ions from being reduced to zero-valent silver, to generate silver nanoparticles coated and complexed with both low and high molecular weight polyvinyl pyrrolidone. Polyvinyl pyrrolidone of different molecular weight shows different selective absorption of silver, and different stability makes it affect the speed of growth of silver atoms along different crystal faces to different extent, which is better for silver nano-ring production, with higher yield. Silver nano-rings made from this invention features perfect circular shape, smooth surface, oval cross-section, and great crystal structure, and can be used as transparent flexible conductive material.

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Patent Owner(s)

  • SHENZHEN HUAKE-TEK CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jin, Shidong Shenzhen, CN 2 0
Li, Xiaoming Shenzhen, CN 125 628
Wang, Haibo Shenzhen, CN 209 591
Wu, Junqing Shenzhen, CN 3 3
Zeng, Xiping Shenzhen, CN 3 0

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