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水相法制備小粒徑金溶膠
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甘肅省科學(xué)事業(yè)費項目（QS001-C32-01）


Preparation of Au Colloid of Small Size in Aqueous Solution
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    摘要:

    采用檸檬酸三鈉還原氯金酸法制備金溶膠。研究了還原劑用量、試劑加入順序、反應(yīng)時間、攪拌速度等因素對金溶膠濃度、粒徑、形貌和分散性的影響，使用紫外-可見分光光度計和透射電子顯微鏡對金溶膠的光學(xué)特性、粒徑、形貌及結(jié)構(gòu)進行表征。結(jié)果表明：制備小粒徑金溶膠的最優(yōu)條件為檸檬酸三鈉(0.034 mol/L)與氯金酸(0.024 mol/L)溶液體積比為3:1，將氯金酸加入檸檬酸三鈉溶液中為宜，反應(yīng)時間6 min，攪拌速度約650 r/min；在此最優(yōu)條件下可成功制備出形貌均一、分散性好、穩(wěn)定性佳的金溶膠，其平均粒徑約6

    Abstract:

    Au colloid was prepared by reducing HAuCl4·4H2O with Na3C6H5O7·2H2O. The effects of reductant amounts, mixing procedures, reaction time and stirring speed on the concentration, size, shape and monodispersity of Au colloid were investigated. UV-vis and TEM were used to characterize the size, shape, structure and optical properties of the samples. It's found that the optimal conditions for preparing Au colloid of small size are Na3C6H5O7(aq):HAuCl4(aq)=3:1(V:V), mixing Na3C6H5O7 firstly, reacting for 6 min and 650 r/min stirring speed. The colloid was prepared successfully which has superiority in shape, monodispersity and stability. The size of nanoparticles is only about 6~7 nm

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毛 斌,劉 斌,王運福,李工農(nóng),宋玉哲,馬莉萍,劉國漢.水相法制備小粒徑金溶膠[J].稀有金屬材料與工程,2009,38(3):515~518.[Mao Bin, Liu Bin, Wang Yunfu, Li Gongnong, Song Yuzhe, Ma Liping, Liu Guohan. Preparation of Au Colloid of Small Size in Aqueous Solution[J]. Rare Metal Materials and Engineering,2009,38(3):515~518.]
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  • 收稿日期:2008-02-16
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