Effect of citrate ratio and temperature on gold nanoparticle size and morphology
Effect of citrate ratio and temperature on gold nanoparticle size and morphology
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DOI：
10.1088/2053-1591/3/10/105027
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发表时间：
2016-10-01
影响因子：
2.3
通讯作者：
Padalkar, Sonal
中科院分区：
文献类型：
--
作者：
Minh Tran;DePenning, Rebekah;Padalkar, Sonal
采用柠檬酸盐还原法合成了金纳米粒子（Au NPs）。通过改变温度和柠檬酸盐与金前体（Na（3）Ct/HAuCl 4）的比率，密切研究了NP尺寸和形态的演变。主要研究了100 ℃以下的反应温度。ANa（3）Ct/HAuCl_4比值范围为1.25：1 ~ 4.33：1。NP的大小和形态受到Na（3）Ct/HAuCl 4比例的强烈影响，而温度起着微妙的作用。还监测了反应时间。与低浓度样品相比，较高浓度样品需要几乎一个数量级更长的反应时间。
Gold nanoparticles (Au NPs) were synthesized by the citrate reduction method. The evolution of NP size and morphology was closely studied by varying temperature and citrate to gold precursor (Na(3)Ct/HAuCl4) ratio. The reaction temperatures below 100 degrees C were mainly studied. ANa(3)Ct/HAuCl4 ratio range of 1.25:1 to 4.33:1 was the focus of our investigation. The NP size and morphology was strongly influenced by the Na(3)Ct/HAuCl4 ratio, while the temperature played a subtle role. The reaction times were also monitored. The higher concentration samples required almost an order of magnitude longer reaction time compared to the low concentration samples.