CN110116216A - 一种氮化硼纳米管-银杂化颗粒材料的制备方法 - Google Patents

一种氮化硼纳米管-银杂化颗粒材料的制备方法 Download PDF

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CN110116216A
CN110116216A CN201810117805.2A CN201810117805A CN110116216A CN 110116216 A CN110116216 A CN 110116216A CN 201810117805 A CN201810117805 A CN 201810117805A CN 110116216 A CN110116216 A CN 110116216A
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boron nitride
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孙蓉
傅晨洁
曾小亮
鲁济豹
李晨
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Shenzhen Institute of Advanced Technology of CAS
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Abstract

本发明实施例提供一种氮化硼纳米管‑银杂化颗粒的制备方法，涉及纳米材料制备技术领域。其中，该方法包括：按照氮化硼纳米管与硝酸银的质量比100:1～10，将氮化硼纳米管的溶液与硝酸银混合，加入硼氢化钠，搅拌，反应1～4h，过滤，干燥，得到氮化硼纳米管‑银杂化颗粒，其中，硼氢化钠与硝酸银的质量比为1～2:1。利用硼氢化钠作为还原剂还原硝酸银，使生成的银纳米颗粒沉积在氮化硼纳米管上面，工艺简单，适合大批量生产。

Description

一种氮化硼纳米管-银杂化颗粒材料的制备方法
技术领域
本发明属于纳米材料制备技术领域，尤其涉及一种氮化硼纳米管-银杂化颗粒的制备方法。
背景技术
金属纳米粒子由于具有量子尺寸效应、体积效应、表面效应，可以应用于磁学、光学、热学等领域。将金属纳米粒子与无机材料相结合，可使得无机材料的性能大大改善。氮化硼纳米管作为无机材料，与碳纳米管具有相似的管状结构，不仅具有类似于碳纳米管的导热、机械性能，还具有良好的化学稳定性，优良的绝缘性，较低的热膨胀系数，良好的耐腐蚀性等优良性能。
但是现有的氮化硼纳米管银杂化颗粒的制备方法繁琐、工艺复杂，不能满足各行各业的需求。
发明内容
本发明提供一种氮化硼纳米管-银杂化颗粒的制备方法，旨在解决现有的制备方法繁琐、工艺复杂的问题。
本发明提供的一种氮化硼纳米管-银杂化颗粒的制备方法，包括：
按照氮化硼纳米管与硝酸银的质量比100:1～10，将氮化硼纳米管的溶液与硝酸银混合；
加入硼氢化钠，搅拌，反应1～4h，过滤，干燥，得到氮化硼纳米管-银杂化颗粒；其中，硼氢化钠与硝酸银的质量比为1～2:1。
本发明提供的一种氮化硼纳米管-银杂化颗粒的制备方法，利用硼氢化钠作为还原剂还原硝酸银，使生成的银纳米颗粒沉积在氮化硼纳米管上面，工艺简单，适合大批量生产。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例。
图1是本发明实施例1制备得到的氮化硼纳米管-银杂化颗粒的透射电镜测试图。
具体实施方式
为使得本发明的发明目的、特征、优点能够更加的明显和易懂，下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而非全部实施例。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明提供的一种氮化硼纳米管-银杂化颗粒的制备方法，该方法包括：
步骤一、按照氮化硼纳米管与硝酸银的质量比100:1～10，将氮化硼纳米管的溶液与硝酸银混合；
步骤二、加入硼氢化钠，搅拌，反应1～4h，过滤，干燥，得到氮化硼纳米管-银杂化颗粒；
其中，硼氢化钠与硝酸银的质量比为1～2:1。
本发明提供的一种氮化硼纳米管-银杂化颗粒的制备方法，利用硼氢化钠作为还原剂还原硝酸银，使生成的银纳米颗粒沉积在氮化硼纳米管上面，得到的氮化硼纳米管-银杂化颗粒中银的直径为5～15nm，银纳米颗粒占氮化硼纳米管-银杂化颗粒的质量百分比为0.1～0.5％。上述制备方法简单，适合大批量生产。
具体地，步骤一中，氮化硼纳米管的溶液选用的溶剂为异丙醇、去离子水和乙醇中的任意一种。氮化硼纳米管溶液的浓度为0.1～0.5mg/mL。氮化硼纳米管的直径为30～60nm，长度为0.2～1.2um。优选地，氮化硼纳米管溶液的浓度为0.3mg/mL。氮化硼纳米管的直径为60nm，长度为1um。
具体地，步骤二中，硼氢化钠选用浓度为0.01～0.05mg/mL的硼氢化钠溶液，优选为0.04mg/mL。搅拌速率为300～500rpm，干燥温度为50～80摄氏度，优选地，搅拌速率为500rpm，干燥温度为50摄氏度。
优选地，硼氢化钠与硝酸银的质量比为1.5:1。
实施例1
称取50mg直径为40nm长度为0.7um的氮化硼纳米管置于烧杯中，加入100mL异丙醇，超声24h，得到浓度为0.5mg/mL的氮化硼纳米管分散液。
按照氮化硼纳米管与硝酸银的质量比100:5，取氮化硼纳米管分散液和浓度为0.03mg/mL硝酸银溶液混合，在转速为400rpm的条件下进行磁力搅拌，并滴加浓度为0.04mg/mL硼氢化钠溶液(硼氢化钠与硝酸银的质量比为1.5:1)，反应1h，过滤，在50摄氏度的条件下烘干，得到氮化硼纳米管-银杂化颗粒。
对实施例1制备得到的氮化硼纳米管-银杂化颗粒材料进行TEM(透射电镜)测试，如图1所示，图1为实施例1制备到的得到的氮化硼纳米管-银杂化颗粒的透射电镜测试图。由图1可以看出，实施例1制备得到的氮化硼纳米管-银杂化颗粒中，沉积在氮化硼纳米管上的银纳米颗粒的尺寸为5nm～15nm。
实施例2
称取10mg直径为30nm长度为0.2um的氮化硼纳米管置于烧杯中，加入100mL异丙醇，超声48h，得到浓度为0.1mg/mL的氮化硼纳米管分散液。
按照氮化硼纳米管与硝酸银的质量比100:1，取氮化硼纳米管分散液和浓度为0.04mg/mL硝酸银溶液混合，在转速为500rpm的条件下进行磁力搅拌，并滴加浓度为0.01mg/mL硼氢化钠溶液(硼氢化钠与硝酸银的质量比为2:1)，反应2h，过滤，在80摄氏度的条件下烘干，得到氮化硼纳米管-银杂化颗粒。
实施例3
称取30mg直径为60nm长度为1.2um的氮化硼纳米管置于烧杯中，加入100mL异丙醇，超声36h，得到浓度为0.3mg/mL的氮化硼纳米管分散液。
按照氮化硼纳米管与硝酸银的质量比100:10，取氮化硼纳米管分散液和浓度为0.02mg/mL硝酸银溶液混合，在转速为500rpm的条件下进行磁力搅拌，并滴加浓度0.05mg/mL的硼氢化钠溶液(硼氢化钠与硝酸银的质量比为1:1)，反应4h，过滤，在60摄氏度的条件下烘干，得到氮化硼纳米管-银杂化颗粒。
对实施例1～3制备得到的氮化硼纳米管-银杂化颗粒材料作为聚合物(纤维素)的导热填料，并对其进行导热性能测试，如表1所示，表1为实施例1～3制备得到的氮化硼纳米管-银杂化颗粒作为聚合物(纤维素)导热填料的导热系数表。由表1可以看出，实施例1制备得到的氮化硼纳米管-银杂化颗粒作为聚合物(纤维素)的导热填料，在其掺入量为25wt％时，其导热系数提高至18.816Wm-1K-1。
表1
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (9)

1.一种氮化硼纳米管-银杂化颗粒的制备方法，其特征在于，所述方法包括：
按照氮化硼纳米管与硝酸银的质量比100:1～10，将氮化硼纳米管的溶液与硝酸银混合；
加入硼氢化钠，搅拌，反应1～4h，过滤，干燥，得到氮化硼纳米管-银杂化颗粒；
其中，硼氢化钠与硝酸银的质量比为1～2:1。
2.根据权利要求1所述的方法，其特征在于，氮化硼纳米管的溶液选用的溶剂为异丙醇、去离子水或乙醇中的任意一种。
3.根据权利要求1或2所述的方法，其特征在于，氮化硼纳米管溶液的浓度为0.1～0.5mg/mL。
4.根据权利要求1所述的方法，其特征在于，氮化硼纳米管的直径为30～60nm，长度为0.2～1.2um。
5.根据权利要求1所述的方法，其特征在于，硝酸银选用浓度为0.01～0.04mg/mL的硝酸银溶液。
6.根据权利要求1所述的方法，其特征在于，硼氢化钠选用浓度为0.01～0.05mg/mL的硼氢化钠溶液。
7.根据权利要求1所述的方法，其特征在于，搅拌速率为300～500rpm。
8.根据权利要求1所述的方法，其特征在于，干燥温度为50～80摄氏度。
9.根据权利要求1所述的方法，其特征在于，硼氢化钠与硝酸银的质量比为1.5:1。
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