CN105742657B - 一种麦穗形Te-Pt合金纳米线的制备方法 - Google Patents

一种麦穗形Te-Pt合金纳米线的制备方法 Download PDF

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CN105742657B
CN105742657B CN201610148260.2A CN201610148260A CN105742657B CN 105742657 B CN105742657 B CN 105742657B CN 201610148260 A CN201610148260 A CN 201610148260A CN 105742657 B CN105742657 B CN 105742657B
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CN105742657A (zh
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王騊
王晟
欧阳申珅
彭美灵
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Deqing Jiuyun Materials Science Research Co ltd
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Abstract

本发明涉及一种Te‑Pt合金纳米线的制备方法，具体涉及一种麦穗形的Te‑Pt合金纳米线的制备方法，包括以下步骤：1)使用碲源制备出碲纳米线，按质量份数，称取1‑5份的碲纳米线加入到含有25‑50份无水乙醇的烧杯中，磁力搅拌30‑50分钟使得分散均匀；2)取步骤1)所得的分散溶液，以碲、铂原子摩尔比为10：(1至100)的比例加入所需铂源，分散到超纯水中，放入聚四氟乙烯内衬中，移入反应釜中水热反应4‑6小时，即得麦穗形Te‑Pt合金纳米线成品。本发明制备过程简单，条件易于控制，且本发明制备的直径为25纳米左右的麦穗形碲铂合金纳米线，在微观状态下大长径比的碲铂合金纳米线相互交织在一起，暴露出大的活性面积，具有规整的微纳结构，催化活性高，稳定性好。

Description

一种麦穗形Te-Pt合金纳米线的制备方法
技术领域
本发明涉及一种Te-Pt合金纳米线的制备方法，具体涉及一种麦穗形的Te-Pt合金纳米线的制备方法。
背景技术
目前商用的铂催化剂用量大，但是铂催化剂存在主要问题：(1)贵金属铂的使用价格昂贵且资源稀缺，导致了燃料电池的制作成本很高，因此需要进一步的降低铂的含量，同时提高催化剂的活性；(2)一些中间产物如CO会在甲醇过程中吸附在催化剂表面影响催化性能，需通过调控催化剂的形貌结构和种类，从而提高催化剂的性能和性能的稳定性；(3)开发寻求合理的制备催化剂的合成方法，使其成本低廉、工艺简单并且容易控制的催化剂。以上三个问题成为制约燃料电池商业化进程的重要因素。碲铂合金纳米线材料电催化活性优异，催化性能稳定等优点，可应用于电极或催化剂等方面。
发明内容
本发明的目的在于提供一种麦穗形的Te-Pt合金纳米线的制备方法，该发明通过水热法将铂置换到碲纳米线模板上，随后经过干燥后，即可得到了尺寸均一，形貌相互交织的麦穗形Te-Pt合金纳米线。
为实现上述目的，本发明采用的技术方案是：一种麦穗形Te-Pt合金纳米线的制备方法，包括以下步骤：
1)使用碲源制备出碲纳米线，按质量份数，称取1-5份的碲纳米线加入到含有25-50份无水乙醇的烧杯中，磁力搅拌30-50分钟使得分散均匀；
2)取步骤1)所得的分散溶液，以碲、铂原子摩尔比为10：(1至100)的比例加入所需铂源，分散到超纯水中，放入聚四氟乙烯内衬中，移入反应釜中水热反应4-6小时，即得麦穗形Te-Pt合金纳米线成品。
与现有技术相比，本发明具有以下有益效果：
(1)本发明制备的直径为25纳米左右的麦穗形碲铂合金纳米线，在微观状态下大长径比的碲铂合金纳米线相互交织在一起，暴露出大的活性面积，具有规整的微纳结构；
(2)本发明制备出基于麦穗形Te-Pt合金纳米线材料催化活性高，稳定性好；
(3)本发明制备过程简单，条件易于控制，便于规模生产。
附图说明
图1是本发明的麦穗形Te-Pt合金纳米线的不同倍率下(10万倍)的透射电镜图。
图2是本发明的麦穗形Te-Pt合金纳米线的不同倍率下(40万倍)的透射电镜图。
具体实施方式
下面结合实施例对本发明做进一步阐述，而不是要以此对本发明进行限制。
本发明首先通过水热法将铂置换到碲纳米线模板上，然后经过干燥后即可得到直径为25纳米左右的麦穗形碲铂合金纳米线。微观状态下大长径比的碲铂合金纳米线相互交织在一起，暴露出大的活性面积，具有规整的微纳结构。
实施例1：
一种麦穗形Te-Pt合金纳米线的制备方法，包括以下步骤：
1)使用碲源制备出碲纳米线，按质量份数，称取1份的碲纳米线加入到含有25份无水乙醇的烧杯中，磁力搅拌30分钟使得分散均匀；
2)取步骤1)所得的分散溶液，以碲、铂原子摩尔比为10:1的比例加入所需铂源，分散到超纯水中，放入聚四氟乙烯内衬中，移入反应釜中水热反应4小时，即得麦穗形Te-Pt合金纳米线成品。
如此，便可制备出直径为25纳米的麦穗形碲铂合金纳米线，微观状态下大长径比的碲铂合金纳米线相互交织在一起，暴露出大的活性面积，具有规整的微纳结构。
实施例2：
一种麦穗形Te-Pt合金纳米线的制备方法，包括以下步骤：
1)使用碲源制备出碲纳米线，按质量份数，称取3份的碲纳米线加入到含有35份无水乙醇的烧杯中，磁力搅拌40分钟使得分散均匀；
2)取步骤1)所得的分散溶液，以碲、铂原子摩尔比为10:10的比例加入所需铂源，分散到超纯水中，放入聚四氟乙烯内衬中，移入反应釜中水热反应5小时，即得麦穗形Te-Pt合金纳米线成品。
实施例3：
一种麦穗形Te-Pt合金纳米线的制备方法，包括以下步骤：
1)使用碲源制备出碲纳米线，按质量份数，称取5份的碲纳米线加入到含有50份无水乙醇的烧杯中，磁力搅拌50分钟使得分散均匀；
2)取步骤1)所得的分散溶液，以碲、铂原子摩尔比为10:80的比例加入所需铂源，分散到超纯水中，放入聚四氟乙烯内衬中，移入反应釜中水热反应6小时，即得麦穗形Te-Pt合金纳米线成品。
最后应当说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (1)

1.一种麦穗形Te-Pt合金纳米线的制备方法，其特征在于包括以下步骤：
1)使用碲源制备出碲纳米线，按质量份数，称取1-5份的碲纳米线加入到含有25-50份无水乙醇的烧杯中，磁力搅拌30-50分钟使得分散均匀；
2)取步骤1)所得的分散溶液，以碲、铂原子摩尔比为10：(80-100)的比例加入所需铂源，分散到超纯水中，放入聚四氟乙烯内衬中，移入反应釜中水热反应4-6小时，即得麦穗形Te-Pt合金纳米线成品。
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CN110339833A (zh) * 2019-07-19 2019-10-18 河海大学 一种超薄PtTe纳米线的制备方法及PtTe纳米线
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