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Green Synthesis of Highly Pure Nano-Silver Sols—Electrolysis
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Green Synthesis of Highly Pure Nano-Silver Sols—Electrolysis
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    摘要:

    以兩高純銀片作電極，以去離子水為電解液，PVP作為輔助電解質(zhì)和穩(wěn)定劑，通過電解法制備了高純納米銀溶膠。探討了PVP含量、電解時間、電流密度對形成的納米銀溶膠的影響。結(jié)果表明：當(dāng)PVP質(zhì)量分?jǐn)?shù)為5%、電解150 min、電流密度為1~2 mA/cm2時，所得球形銀粒子的粒徑1~3 nm、單分散，濃度達(dá)130 μg/g, 而且有極好的存放穩(wěn)定性，室溫避光存放6個月無任何可見的變化。

    Abstract:

    The highly pure nano-silver sols were prepared by an electrolysis method using two highly pure silver flakes as electrodes and deionized water as electrolytic solution, and PVP served as stabilizer. The effects of PVP content, electrolytic time and current density on the colloidal silver nanoparticles were researched. The results indicate that as-synthesized particles were spherical about 1~3 nm in size, and monodispersed and its concentration reached to 130 μg/g under the condition of 5.0 wt% PVP with current density about 1~2 mA/cm2 for 150 min. Moreover, the nano-silver sol had such an excellent stability that it had not any change though it was placed in dark at room temperature for 6 months.

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徐光年,喬學(xué)亮,邱小林,陳建國. Green Synthesis of Highly Pure Nano-Silver Sols—Electrolysis[J].稀有金屬材料與工程,2013,42(2):249~253.[Xu Guangnian, Qiao Xueliang, Qiu Xiaolin, Chen Jianguo. Green Synthesis of Highly Pure Nano-Silver Sols—Electrolysis[J]. Rare Metal Materials and Engineering,2013,42(2):249~253.]
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  • 收稿日期:2012-03-10
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