CN102009185B - 一种银纳米带的制备方法 - Google Patents
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Abstract
本发明属于新材料技术领域，具体为一种银纳米带的制备方法。该方法以硝酸银为金属盐前驱体，以水为溶剂，以氨基苯甲醚为还原剂，在水热反应釜中于100～240℃反应1～24小时，得到厚度20～100纳米，宽度100～1000纳米，长度为1～100微米的聚氨基苯甲醚保护的银纳米带。该方法制备的银纳米带除具备一般纳米材料高比表面的特征外，还具备形貌可控，尺寸可调的特点，这种银纳米带有望在导电材料、电磁屏蔽、防静电、灭菌消毒、表面增强拉曼等光、电及新型复合材料领域获得广发的应用。
Description
技术领域
本发明属于新材料技术领域，具体涉及一种银纳米带的制备方法。
背景技术
纳米材料是本世纪新材料技术研究的热点领域之一。由于银纳米带具有进行高效的电子传输和光子激发所需的最小尺度特性，因此对于它们的研究逐渐成为热点。除此之外，由于其独特的电子、光学、热力学和力学性质及其在电子学、光子学、生物化学传感、成像和催化方面等潜在应用而吸引了大量研究者的关注。
近年来，湿化学还原法以其简单温和、便于调控、产物均匀以及有利于大规模制备等优点而被广泛采用于银纳米结构材料的制备(M.Rycenga等Adv.Mater.2008，20，2416-2420；L.J.Sherry等，Nano Lett.2005，5，2034-2038；M.Tsuji等，Cryst.Growth Des.2007，7，311-320)。但是湿化学方法合成的一维银纳米结构仅限于银纳米线，对银纳米带的制备研究相对来说还较为少见(B.Q.Liu，W.Luo，X.P.Zhao.，Mater.Res.Bull.2009，44，682-687.YugangSun，Brian Mayers，Younan Xia..Nano letters，2003，3，675-679)，且溶液方法或者需要使用氧化铝等硬模板，或者需要借助表面活性剂(如聚乙烯吡咯烷酮)作为结构导向剂，制备过程极为繁琐，一般需要复杂的后续模板移除工序，产率较低。这种实验室的制备方法不利于银纳米带的大规模工业化应用。
发明内容
本发明的目的是提供一种经济合理的银纳米带制备方法，这种方法不使用各种硬模板或者表面活性剂作为结构导向剂，并且简单便捷，绿色环保，适合大规模工业化应用。
本发明的目的是通过以下技术方案实现的：
一种银纳米带的制备方法，其特征在于包括如下步骤：
(1)将硝酸银、氨基苯甲醚在水溶液中混合，经搅拌或超声波溶解，得到均匀的混合溶液；
(2)将步骤(1)中的混合溶液置入高压反应釜中并密封，于100～240℃反应1～48小时；
(3)冷却后经过滤或离心分离，得到目标固体产物，所得固体产物为厚度20～100纳米，宽度100～1000纳米，长度为1～100微米的表面均匀覆盖一层聚氨基苯甲醚保护的银纳米带。
本发明与现有技术相比，具有以下优点和积极效果：1、不使用各种硬模板或者表面活性剂作为结构导向剂，以硝酸银为金属盐前驱体，以氨基苯甲醚为还原剂，以水溶液作为反应载体，简单便捷，绿色环保，因而具备光明的工业化应用前景。2、本方法制备的银纳米带厚度20～100纳米，宽度100～1000纳米，长度为1～100微米，表面有一层聚氨基苯甲醚保护膜。本方法制备的银纳米带尺寸均匀，形貌可控，在复合功能材料领域有着很大的应用优势和产业化前景。
作为本发明改进的技术方案，上述所述步骤(1)中硝酸银和氨基苯甲醚的摩尔比为1∶0.08～16.50。
作为本发明改进的技术方案，所述硝酸银的浓度为0.2～42.5g/L。
作为本发明进一步改进的技术方案：上述所述硝酸银的质量浓度为3％，氨基苯甲醚的体积浓度为0.25％，步骤(2)的反应温度为180℃，反应时间为10小时。通过该优化技术方案所制备的银纳米带厚度约为30纳米，宽度约为1微米，长度约为50微米，有望在导电导热、电磁屏蔽、表面增强拉曼、微型电缆等领域获得广泛应用。
作为上述方案的进一步改进，上述步骤(3)的反应产物可经无水乙醇和纯水清洗以除去可能的杂质。
附图说明
图1是产品的X射线粉末衍射(XRD)图；
图2A是产品A的扫描电镜图；
图2B是产品B的扫描电镜图；
图2C是产品C的扫描电镜图；
图2D是产品D的扫描电镜图；
具体实施方式
实施例1
(1)将硝酸银、氨基苯甲醚在水溶液中混合，经搅拌或超声波溶解，得到均匀的混合溶液，其中，硝酸银溶液的质量浓度为3％，氨基苯甲醚的体积浓度为0.25％；
(2)将步骤(1)中的混合溶液置入高压反应釜中并密封，反应温度为180℃，反应时间为10小时；
(3)冷却后经过滤或离心分离，得到目标固体产物。
(4)反应产物经无水乙醇和纯水清洗以除去可能的杂质，获得产物A。
实施例2
硝酸银溶液的质量浓度为3％，氨基苯甲醚的体积浓度为0.5％，反应温度为180℃，反应时间为10小时。反应产物可经无水乙醇和纯水清洗以除去可能的杂质，获得产物B。(其他同实施例1)
实施例3
硝酸银溶液的质量浓度为3％，氨基苯甲醚的体积浓度为0.75％，反应温度为180℃，反应时间为10小时。反应产物可经无水乙醇和纯水清洗以除去可能的杂质，获得产物C。(其他同实施例1)
实施例4
硝酸银溶液的质量浓度为3％，氨基苯甲醚的体积浓度为1％，反应温度为180℃，反应时间为10小时。反应产物可经无水乙醇和纯水清洗以除去可能的杂质，获得产物D。(其他同实施例1)
Claims (2)
1.一种银纳米带的制备方法，其特征在于包括如下步骤：
(1)将硝酸银、氨基苯甲醚在水溶液中混合，经搅拌或超声波溶解，得到均匀的混合溶液；
(2)将步骤(1)的混合溶液置入高压反应釜中并密封，于180℃反应10小时；
(3)冷却后经过滤或离心分离，得到目标固体产物，所得固体产物为厚度20～100纳米，宽度100～1000纳米，长度为1～100微米的表面均匀覆盖一层聚氨基苯甲醚保护的银纳米带；
所述硝酸银的质量浓度为3％，氨基苯甲醚的体积浓度为0.25％。
2.根据权利要求1所述的一种银纳米带的制备方法，其特征在于：上述步骤(3)的反应产物经无水乙醇和纯水清洗以除去杂质。
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| CN102407342B (zh) * | 2011-10-31 | 2013-06-05 | 山东大学 | 粒径可精确控制的纳米银粉的制备方法 |
| CN109848436A (zh) * | 2019-03-01 | 2019-06-07 | 淮海工学院 | 一种制备银纳米带的方法 |
| CN115475952B (zh) * | 2022-09-09 | 2024-01-26 | 淮阴师范学院 | 一种银纳米带的制备方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1266761A (zh) * | 2000-03-23 | 2000-09-20 | 南京大学 | 纳米级银粉的制备方法 |
| CN1709791A (zh) * | 2005-07-05 | 2005-12-21 | 华东理工大学 | 一种制备银纳米线的方法 |
| CN1709618A (zh) * | 2005-07-08 | 2005-12-21 | 昆明理工大学 | 一种纳米、亚微米银粉的制备方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1266761A (zh) * | 2000-03-23 | 2000-09-20 | 南京大学 | 纳米级银粉的制备方法 |
| CN1709791A (zh) * | 2005-07-05 | 2005-12-21 | 华东理工大学 | 一种制备银纳米线的方法 |
| CN1709618A (zh) * | 2005-07-08 | 2005-12-21 | 昆明理工大学 | 一种纳米、亚微米银粉的制备方法 |
Non-Patent Citations (1)
| Title |
|---|
| 姜妲等.单晶银纳米带的合成与机理分析.《功能材料》.2006,第37卷(第11期), * |
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