CN112934238A - 一种ZnS纳米片复合光催化剂 - Google Patents
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- 239000002135 nanosheet Substances 0.000 title claims abstract description 86
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000001704 evaporation Methods 0.000 claims description 15
- 230000008020 evaporation Effects 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 abstract description 77
- 239000005083 Zinc sulfide Substances 0.000 abstract description 10
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003054 catalyst Substances 0.000 abstract description 8
- 238000002207 thermal evaporation Methods 0.000 abstract description 7
- 230000001699 photocatalysis Effects 0.000 abstract description 3
- 239000004408 titanium dioxide Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
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Abstract
本发明公开了一种ZnS纳米片复合光催化剂,所述催化剂由ZnS纳米片层、TiO2层和ZnS纳米片层组成层状结构,所述层状结构的厚度为10nm~20nm;所述层状结构中最外层的ZnS纳米片层的厚度为2nm~5nm。该催化剂基于热蒸发制备硫化锌纳米片,同时与同样具有禁带宽度的二氧化钛复合形成三层结构,通过控制层状结构厚度和外层厚度,得到的催化剂具有高的光催化性能。
Description
技术领域
本发明属于纳米材料技术领域,具体涉及一种ZnS纳米片复合光催化剂。
背景技术
作为一种优秀的半导体材料,硫化锌所具有的荧光效应和电致发光效应使其在光学、电学和电子元器件制造和改进领域展现出巨大的应用潜能。
纳米材料由于具备小粒径、大表面积的特点,其形貌与表面性能直接相关,在光电领域同样得到广泛的关注。
将硫化锌制备成纳米片、纳米粉、纳米棒材等,进而赋予硫化锌新的光电性能,是提高硫化锌的应用范围和光电性能的一个具有研究价值的思路。
发明内容
本发明所要解决的技术问题在于针对上述现有技术的不足,提供一种ZnS纳米片复合光催化剂。该催化剂基于热蒸发制备硫化锌纳米片,同时与同样具有禁带宽度的二氧化钛复合形成三层结构,通过控制层状结构厚度和外层厚度,得到的催化剂具有高的光催化性能。
为解决上述技术问题,本发明采用的技术方案是:一种ZnS纳米片复合光催化剂,其特征在于,所述催化剂由ZnS纳米片层、TiO2层和ZnS纳米片层组成层状结构,所述层状结构的厚度为10nm~20nm;所述层状结构中最外层的ZnS纳米片层的厚度为2nm~5nm。
上述的一种ZnS纳米片复合光催化剂,其特征在于,所述层状结构的厚度为12nm~25nm;所述层状结构中最外层的ZnS纳米片层的厚度为3nm~4nm。
上述的一种ZnS纳米片复合光催化剂,其特征在于,所述层状结构的厚度为18nm;所述层状结构中最外层的ZnS纳米片层的厚度为3.2nm。
上述的一种ZnS纳米片复合光催化剂,其特征在于,所述ZnS纳米片的制备方法包括以下步骤:
步骤一、将硫粉和金属锌粉按照物质的量之比为1:1放入电阻加热舟中;
步骤二、将步骤一的电阻加热舟在真空条件下蒸发10min~20min;
步骤三、分离舟底沉积物,得到ZnS纳米片。
上述的一种ZnS纳米片复合光催化剂,其特征在于,步骤二中所述真空的真空度为1.0×10-2Pa~2.0×10-2Pa。
上述的一种ZnS纳米片复合光催化剂,其特征在于,步骤二中蒸发为在加热电流为150A条件下进行加热蒸发。
本发明与现有技术相比具有以下优点:
1、本发明的催化剂基于热蒸发制备硫化锌纳米片,同时与同样具有禁带宽度的二氧化钛复合形成三层结构,通过控制层状结构厚度和外层厚度,得到的催化剂具有高的光催化性能。
2、本发明准备硫化锌那米层的方法基于热蒸发制备硫化锌纳米片,在电阻加热舟中对硫粉和锌粉进行真空蒸发,得到的ZnS纳米片均匀,具有低能耗、方法简单等优点。
下面结合实施例,对本发明的技术方案做进一步的详细描述。
具体实施方式
实施例1
本实施例的一种热蒸发制备ZnS纳米片的方法,包括以下步骤:
步骤一、将硫粉和金属锌粉按照物质的量之比为1:1放入电阻加热舟中;
步骤二、将步骤一的电阻加热舟在真空条件下蒸发15min;所述真空的真空度为1.5×10-2Pa;蒸发为在加热电流为150A条件下进行加热蒸发
步骤三、分离舟底沉积物,得到ZnS纳米片。
实施例2
本实施例的一种热蒸发制备ZnS纳米片的方法,包括以下步骤:
步骤一、将硫粉和金属锌粉按照物质的量之比为1:1放入电阻加热舟中;
步骤二、将步骤一的电阻加热舟在真空条件下蒸发10min;所述真空的真空度为2.0×10-2Pa;蒸发为在加热电流为150A条件下进行加热蒸发
步骤三、分离舟底沉积物,得到ZnS纳米片。
实施例3
本实施例的一种热蒸发制备ZnS纳米片的方法,包括以下步骤:
步骤一、将硫粉和金属锌粉按照物质的量之比为1:1放入电阻加热舟中;
步骤二、将步骤一的电阻加热舟在真空条件下蒸发20min;所述真空的真空度为1.0×10-2Pa;蒸发为在加热电流为150A条件下进行加热蒸发
步骤三、分离舟底沉积物,得到ZnS纳米片。
实施例4
本实施例的一种ZnS纳米片复合光催化剂,所述催化剂由ZnS纳米片层、TiO2层和ZnS纳米片层组成层状结构,所述层状结构的厚度为18nm;所述层状结构中最外层的ZnS纳米片层的厚度为3.2nm;其中ZnS纳米片层为取自实施例1的ZnS纳米片,将ZnS纳米片层、TiO2层和ZnS纳米片层通过常规复合法进行复合,得到本实施例的催化剂。
实施例5
本实施例的一种ZnS纳米片复合光催化剂,所述催化剂由ZnS纳米片层、TiO2层和ZnS纳米片层组成层状结构,所述层状结构的厚度为12nm;所述层状结构中最外层的ZnS纳米片层的厚度为3nm;其中ZnS纳米片层为取自实施例2的ZnS纳米片,将ZnS纳米片层、TiO2层和ZnS纳米片层通过常规复合法进行复合,得到本实施例的催化剂。
实施例6
本实施例的一种ZnS纳米片复合光催化剂,所述催化剂由ZnS纳米片层、TiO2层和ZnS纳米片层组成层状结构,所述层状结构的厚度为25nm;所述层状结构中最外层的ZnS纳米片层的厚度为4nm;其中ZnS纳米片层为取自实施例3的ZnS纳米片,将ZnS纳米片层、TiO2层和ZnS纳米片层通过常规复合法进行复合,得到本实施例的催化剂。
实施例7
本实施例的一种ZnS纳米片复合光催化剂,所述催化剂由ZnS纳米片层、TiO2层和ZnS纳米片层组成层状结构,所述层状结构的厚度为10nm;所述层状结构中最外层的ZnS纳米片层的厚度为2nm;其中ZnS纳米片层为取自实施例2的ZnS纳米片,将ZnS纳米片层、TiO2层和ZnS纳米片层通过常规复合法进行复合,得到本实施例的催化剂。
实施例8
本实施例的一种ZnS纳米片复合光催化剂,所述催化剂由ZnS纳米片层、TiO2层和ZnS纳米片层组成层状结构,所述层状结构的厚度为20nm;所述层状结构中最外层的ZnS纳米片层的厚度为5nm;其中ZnS纳米片层为取自实施例2的ZnS纳米片,将ZnS纳米片层、TiO2层和ZnS纳米片层通过常规复合法进行复合,得到本实施例的催化剂。
以上所述,仅是本发明的较佳实施例,并非对本发明做任何限制,凡是根据发明技术实质对以上实施例所作的任何简单修改、变更以及等效结构变化,均仍属于本发明技术方案的保护范围内。
Claims (6)
1.一种ZnS纳米片复合光催化剂,其特征在于,所述催化剂由ZnS纳米片层、TiO2层和ZnS纳米片层组成层状结构,所述层状结构的厚度为10nm~20nm;所述层状结构中最外层的ZnS纳米片层的厚度为2nm~5nm。
2.根据权利要求1所述的一种ZnS纳米片复合光催化剂,其特征在于,所述层状结构的厚度为12nm~25nm;所述层状结构中最外层的ZnS纳米片层的厚度为3nm~4nm。
3.根据权利要求2所述的一种ZnS纳米片复合光催化剂,其特征在于,所述层状结构的厚度为18nm;所述层状结构中最外层的ZnS纳米片层的厚度为3.2nm。
4.根据权利要求1所述的一种ZnS纳米片复合光催化剂,其特征在于,所述ZnS纳米片的制备方法包括以下步骤:
步骤一、将硫粉和金属锌粉按照物质的量之比为1:1放入电阻加热舟中;
步骤二、将步骤一的电阻加热舟在真空条件下蒸发10min~20min;
步骤三、分离舟底沉积物,得到ZnS纳米片。
5.根据权利要求4所述的一种ZnS纳米片复合光催化剂,其特征在于,步骤二中所述真空的真空度为1.0×10-2Pa~2.0×10-2Pa。
6.根据权利要求4所述的一种ZnS纳米片复合光催化剂,其特征在于,步骤二中蒸发为在加热电流为150A条件下进行加热蒸发。
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