CN109012677B - CuFeO2/ZnO三维纳米p-n异质结材料的制备方法 - Google Patents

CuFeO2/ZnO三维纳米p-n异质结材料的制备方法 Download PDF

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CN109012677B
CN109012677B CN201810901438.5A CN201810901438A CN109012677B CN 109012677 B CN109012677 B CN 109012677B CN 201810901438 A CN201810901438 A CN 201810901438A CN 109012677 B CN109012677 B CN 109012677B
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蒋腾飞
许聪
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Yangzhou University
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Abstract

本发明公开了一种CuFeO2/ZnO三维纳米p‑n异质结材料的制备方法,其步骤为:将CuFeO2纳米片加入到Zn(NO3)2与乌洛托品的混合前驱液中,形成均匀的悬浊液后,将该悬浊液通过水热或常压加热的方法,反应一段时间后得到三维纳米异质结构。所述方法过程简便、原料廉价,所制备的CuFeO2/ZnO三维纳米p‑n异质结材料具有较高的光电化学性能。

Description

CuFeO2/ZnO三维纳米p-n异质结材料的制备方法
技术领域
本发明涉及能源材料领域,特别是涉及应用于光催化还原水的CuFeO2纳米片上外延生长ZnO纳米棒阵列的三维纳米异质结构的制备方法。
背景技术
p型半导体CuFeO2与n型半导体ZnO可构筑成p-n异质结,并具有光电化学分解水制氢的应用潜力。文献[Chemsuschem, 2015, 1359-1367; J. Mater. Chem. A, 2017, 165-171]报道了基于CuFeO2的光电极材料的制备,但到目前为止,尚未有制备CuFeO2/ZnO三维纳米p-n异质结材料的报道。
发明内容
本发明的目的是提供一种CuFeO2/ZnO三维纳米p-n异质结材料的制备方法。
为实现上述目的,本发明的技术方案是:
首先配制不同浓度的Zn(NO3)2与乌洛托品(HMT)的混合前驱液,再通过超声将CuFeO2纳米片加入到该前驱液中,形成均匀的悬浊液后,将该悬浊液通过水热或常压加热的方法,反应一段时间后得到三维纳米异质结构,将产物分别三次水洗和醇洗后转入50℃烘箱中干燥10 h,这种方法简便成本低,所得到的三维纳米异质结构稳定。
进一步的,所述的Zn(NO3)2与乌洛托品(HMT)的物质的量之比为1:2~1:10,该比例下形成的CuFeO2/ZnO三维纳米异质结构。
进一步的,所述的CuFeO2纳米片与Zn(NO3)2的质量比例为2:1~1:10,在此比例下可以形成均一稳定的悬浊母液。
进一步的,所述的悬浊液的反应温度为60℃~200℃,反应时间为0.5 h~36 h,其目的在于控制ZnO纳米棒在CuFeO2表面的阵列生长。
所述的产物的干燥温度为50℃,干燥时间10 h。保证材料充分干燥。
与现有技术相比,本发明的有益效果是:所述方法工艺过程简便、原料廉价,制得的CuFeO2/ZnO三维纳米p-n异质结材料具有较高的光电化学性能。
附图说明
图1是本发明所用CuFeO2纳米片的扫描电镜图。
图2是本发明实施例1所制备材料的扫描电镜图。
图3是本发明实施例1所制备材料的光电流—时间曲线图。
图4是本发明实施例2所制备材料的扫描电镜图。
图5是本发明实施例2所制备材料的光电流—时间曲线图。
图6是本发明实施例3所制备材料的扫描电镜图。
图7是本发明实施例3所制备材料的光电流—时间曲线图。
具体实施方式
实施例1
一种CuFeO2/ZnO三维纳米p-n异质结材料的制备方法,方法步骤如下:
称取12 mg Zn(NO3)2,再量取5 ml浓度为20 mmol/L乌洛托品(HMT)混合加入40 ml去离子水形成Zn(NO3)2与乌洛托品(HMT)的混合前驱液,接着称取3 mg CuFeO2纳米片(其形貌如图1所示),通过超声将CuFeO2纳米片加入到该前驱液中,形成均匀的悬浊液后将该母液移入50 ml反应釜内,在100℃的烘箱中反应3 h,将产物分别三次水洗和醇洗后转入50℃烘箱中干燥10 h,得到CuFeO2/ZnO的三维纳米异质结构。
图2是本发明实施例1所制备材料的扫描电镜图,从图中可以看出ZnO纳米棒已经很好的阵列生长在CuFeO2纳米片表面。
图3是本发明实施例1所制备材料的光电流—时间曲线图,从曲线中可知实施例1所制备材料的光响应电流约为3 μA/cm-2
实施例2
一种CuFeO2/ZnO三维纳米p-n异质结材料的制备方法,方法步骤如下:
称取120 mg Zn(NO3)2,再量取10 ml浓度为20 mmol/L乌洛托品(HMT)混合加入40ml去离子水形成Zn(NO3)2与乌洛托品(HMT)的混合前驱液,接着称取25 mg CuFeO2纳米片,通过超声将CuFeO2纳米片加入到该前驱液中,形成均匀的悬浊液后将该母液移入50 ml反应釜内,在160℃的烘箱中反应12 h,将产物分别三次水洗和醇洗后转入50℃烘箱中干燥10h,得到CuFeO2/ZnO的三维纳米异质结构。
图4是本发明实施例2所制备材料的扫描电镜图,从图中可以看出ZnO纳米棒已经很好的阵列生长在CuFeO2纳米片表面。
图5是本发明实施例2所制备材料的光电流—时间曲线图,从曲线中可知实施例1所制备材料的光响应电流约为2 μA/cm-2
实施例3
一种CuFeO2/ZnO三维纳米p-n异质结材料的制备方法,方法步骤如下:
称取10 mg Zn(NO3)2,再量取10 ml浓度为20 mmol/L乌洛托品(HMT)混合加入40ml去离子水形成Zn(NO3)2与乌洛托品(HMT)的混合前驱液,接着称取2.5 mg CuFeO2纳米片,通过超声将CuFeO2纳米片加入到该前驱液中,形成均匀的悬浊液后将该母液移入100 ml圆底烧瓶内,在80℃的条件下水浴加热2 h,将产物分别三次水洗和醇洗后转入50℃烘箱中干燥10 h,得到CuFeO2/ZnO的三维纳米异质结构。
图6是本发明实施例3所制备材料的扫描电镜图,从图中可以看出ZnO纳米棒已经很好的阵列生长在CuFeO2纳米片表面。
图7是本发明实施例3所制备材料的光电流—时间曲线图,从曲线中可知实施例1所制备材料的光响应电流约为7 μA/cm-2

Claims (2)

1.CuFeO2/ZnO三维纳米p-n异质结材料的制备方法,其特征在于,将CuFeO2纳米片加入到Zn(NO3)2与乌洛托品的混合前驱液中,形成均匀的悬浊液后,将该悬浊液通过水热或常压加热的方法,反应一段时间后得到三维纳米异质结构;
其中,
所述的混合前驱液中,Zn(NO3)2与乌洛托品的物质的量之比为1:2~1:10;
CuFeO2纳米片与Zn(NO3)2的质量比例为2:1~1:10;
悬浊液的反应温度为60℃~200℃,反应时间为0.5 h~36 h。
2.根据权利要求1所述的制备方法,其特征在于,将悬浊液通过水热或常压加热的方法反应后,清洗并干燥后得到三维纳米异质结构,其中,干燥温度为50℃,干燥时间为10 h。
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