| 单分散近球形和片状金粉的制备及表征 |
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| 引用本文： | 罗慧,李世鸿,曾一明,刘继松,李文琳,幸七四,梁云,姚志强,张骏.单分散近球形和片状金粉的制备及表征[J].贵金属,2017,38(1):15-21. |
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| 作者姓名： | 罗慧 李世鸿 曾一明 刘继松 李文琳 幸七四 梁云 姚志强 张骏 |
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| 作者单位： | 贵研铂业股份有限公司稀贵金属综合利用新技术国家重点实验室,昆明,650106 |
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| 基金项目： | The fund of the State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals，Development &Industrialization of Buried Conductive and Via-Fill gold pastes used on LTCC Substrate，Key Technologies of Preparing LTCC Electronic Pastes and Their Industrial Applications |
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| 摘 要： | 以HAuCl4·4H2O为前驱体,抗坏血酸(VC)为还原剂,线性聚乙烯亚胺(L-PEI)为表面活性剂在水相中制备了单分散的近球形和片状金粉.采用SEM、XRD和激光粒度分析仪对金粉的形貌、粒径、结晶和分散性进行了测试和表征.研究了还原剂和金前驱体的摩尔比、L-PEI浓度、温度及反应溶液的pH对近球形和片状金粉的形貌和粒径大小的影响.给出了制备微米级近球形和片状金粉的反应条件,同时也提出了近球形和片状金粉的成核和晶核生长的可能解释.
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| 关 键 词： | 金属材料 近球形金粉 片状金粉 制备 表征 |
Preparation and Characterization of Monodispersed Near-sphere and Flake Gold Powders |
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| LUO Hui,LI ShiHong,ZENG Yiming,LIU Jisong,LI Wenlin,XING Qisi,LIANG Yun,YAO Zhiqiang and ZHANG Jun.Preparation and Characterization of Monodispersed Near-sphere and Flake Gold Powders[J].Precious Metals,2017,38(1):15-21. |
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| Authors: | LUO Hui LI ShiHong ZENG Yiming LIU Jisong LI Wenlin XING Qisi LIANG Yun YAO Zhiqiang and ZHANG Jun |
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| Affiliation: | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co. Ltd., Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co. Ltd., Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co. Ltd., Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co. Ltd., Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co. Ltd., Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co. Ltd., Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co. Ltd., Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co. Ltd., Kunming 650106, China and State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co. Ltd., Kunming 650106, China |
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| Abstract: | Monodispersed near-sphere and flake gold powders were prepared by the direct reduction of chloroauric acid tetrahydrate (HAuCl4·4H2O) in water. using ascorbic acid (VC) as the reducing agent and lineal polyethyleneimine (L-PEI) as the surfactant. SEM, XRD and laser particle sizer were used to test the morphology, size, crystal form and dispersity of obtained gold powders. The molar ratio of VC to HAuCl4·4H2O, concentration of L-PEI, temperature as well as pH value of the reaction solution were investigated, and their effects on morphology and size of near-sphere and flake gold particles were discussed. The conditions for preparing near-sphere and flake gold powders in range of one to several micrometers were optimized. Possible explanations for the nuclei formation and growth of near- sphere and flake gold particles were also proposed. |
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| Keywords: | metal materials near-sphere gold flake gold preparation characterization |
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