重生的柠檬酸钠法合成尺寸可在2到330纳米范围内精细调控的、均一类球形的金纳米颗粒
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- 英文论文题名：Revitalizing Frens Method to Synthesize Uniform,Quasi-Spherical Gold Nanoparticles with Deliberately Regulated Sizes from 2 to 330 nm
- 论文作者：夏海兵
- 英文论文作者：Haibing Xia ; State Key Laboratory of Crystal Materials ; Shandong University
- 年：2016
- 作者机构：山东大学晶体材料国家重点实验室;
- 论文关键词：金颗粒 ; 尺寸调控 ; 柠檬酸钠 ; 晶体生长
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
- 语种：中文
- 分类号：O614.123;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：145k
- 原文格式：D
- 会议级别：全国
摘要
此工作中,我们通过使用动态光散射和Zeta电位仪仔细评估了金纳米颗粒的尺寸和表面电荷的时间演变,成功地发展了一个新的且一致的描述柠檬酸钠还原氯金酸制备金纳米颗粒生长的模型。这个新模型证明了金纳米颗粒的成核和生长全部发生在Au~+离子和丙酮二羧酸钠(来自柠檬酸钠还原氯金酸的产物)的复合物(Au~+/SAD)形成的颗粒中,并且遵守Lamer模型。伴随着金纳米颗粒在Au~+/SAD复合物颗粒中生长的同时,这些Au~+/SAD复合物颗粒也经历着可逆的聚集。这个行为导致了反应介质异常的颜色变化,但是对于金纳米颗粒的影响很小。基于这个新模型,我们通过简单的柠檬酸钠法,一步成功地制备了尺寸可在2到330纳米范围内精细调控的单分散、类球形的金纳米颗粒。
In this work,we have successfully developed a new and consistent model to describe the growth of gold nanoparticles(Au NPs) via citrate reduction of HAuCl_4 by carefully assessing the temporal evolution of the NP sizes and surface charges by means of dynamic light scattering and zeta potential measurement.The new model demonstrates that the nucleation and growth of the Au NPs occur exclusively in the particles of the complexes of Au~+ ions and sodium acetone dicarboxylate(SAD) derived from citrate/HAuCl_4 redox reaction,which proceed in a way described by classic LaMer Model.Concomitant with the Au NP growing therein,the Au~+/SAD complex particles undergo reversible agglomeration with the reaction time,which may result in the abnormal color change of the reaction media,but have little impact on the Au NP growth.Built on the new model,we have successfully produced monodisperse,quasi-spherical Au NPs with sizes precisely regulated from 2 to 330 nm via simple citrate reduction in a one-pot manner.
In this work,we have successfully developed a new and consistent model to describe the growth of gold nanoparticles(Au NPs) via citrate reduction of HAuCl_4 by carefully assessing the temporal evolution of the NP sizes and surface charges by means of dynamic light scattering and zeta potential measurement.The new model demonstrates that the nucleation and growth of the Au NPs occur exclusively in the particles of the complexes of Au~+ ions and sodium acetone dicarboxylate(SAD) derived from citrate/HAuCl_4 redox reaction,which proceed in a way described by classic LaMer Model.Concomitant with the Au NP growing therein,the Au~+/SAD complex particles undergo reversible agglomeration with the reaction time,which may result in the abnormal color change of the reaction media,but have little impact on the Au NP growth.Built on the new model,we have successfully produced monodisperse,quasi-spherical Au NPs with sizes precisely regulated from 2 to 330 nm via simple citrate reduction in a one-pot manner.
引文