Synthesis of Silver Nanoparticles via AgNO3 and ATP: Size Control Using NaBH4 and Ultracentrifuge

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This study outlines the synthesis of silver nanoparticles (NPs) utilizing silver nitrate (AgNO3), adenosine triphosphate (ATP), and sodium borohydride (NaBH4) at room temperature and atmospheric pressure. The concentration of components is strategically controlled using ultracentrifugation at 45,000 rpm, with isopropanol (i-PrOH) facilitating precipitation. Different Ag:ATP:BH4 ratios (1:0.1:16 for large NPs, 1:5:16 for small NPs, and 1:0.1:16 for medium-sized NPs) yield nanoparticles in distinct size ranges (1.8-10 nm), showcasing a range of bright yellow colors.

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May 15, 2026

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Synthesis of Silver Nanoparticles via AgNO3 and ATP: Size Control Using NaBH4 and Ultracentrifuge

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Synthesis AgNO3, ATP, NaBH4 (rt, 1 atm) Concentrate with ultracentrifuge at 45K and/or ppt using i-PrOH Ag:ATP:BH4- controls size 1:0.1:16  large NPs (5 - 10 nm) 1:5:16  small NPs (1.8 - 2.5 nm) (bright yellow) 1:0.1:16  5 - 10 nm