CN112642432A - 一种高效光催化性能的铜锌多氧化物纳米复合材料 - Google Patents
一种高效光催化性能的铜锌多氧化物纳米复合材料 Download PDFInfo
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- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 9
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- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 10
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- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000013033 photocatalytic degradation reaction Methods 0.000 claims description 5
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Abstract
一种高效光催化性能的铜锌多氧化物纳米复合材料,属于发光材料制备应用技术领域。本发明提供了一种纳米复合材料,其组分为(CuO‑Cu2O)Cu/ZnO,采用低温燃烧法制备。本发明制备的纳米复合材料具有良好的光催化性能,对MB染料的光催化降解能力为84~98%/h。本发明提供的制备方法工艺简单,产品性能稳定,适合工业化生产。
Description
技术领域
本发明提供一种高效光催化性能的铜锌多氧化物纳米复合材料,属发光材料制备应用技术领域。
背景技术
由于越来越多的工业排放污染物,水体质量下降,预计到2025年将有50%以上的国家面临缺水问题。目前面临的主要问题是合成染料、致病菌、重金属离子、农药、医药废弃物等污染物对水的污染,其中最常见的有害污染物是合成染料和细菌病原体。在自然条件下,很难降解这些染料,因为它们在自然界中是顽固的,而且这些细菌病原体也会导致一些健康问题。因此,开发合格的水净化技术是非常必要的。光催化技术是一种很有前途的绿色技术,它可以将工业有机化学物转化为无机物而不产生任何污染。光触媒产生的电子-空穴对在光的照射下,在电荷载体的帮助下发生氧化还原反应,产生活性自由基,从而作为一种有效的氧化剂去除污染物。从20世纪90年代初开始,人们就对光触媒作为一种可能的抗菌剂进行了研究, 由于高热稳定性和光敏性,与其他金属氧化物相比,ZnO和TiO2基材料被认为是流行的光催化剂。但TiO2的主要缺点与它的成本有关,同时由于带隙宽导致空穴-电子对的快速重组,导致它对可见光的吸收不足。因此,在TiO2和ZnO光催化剂的帮助下,水的净化在几年前就受到了很大的阻碍。
发明内容
1.为了解决上述问题,本发明提供了一种高效光催化性能的铜锌多氧化物纳米复合材料。本发明提供了一种纳米复合材料,其组分为(CuO-Cu2O)Cu/ZnO,采用低温燃烧法制备。本发明制备的纳米复合材料具有良好的光催化性能,对MB染料的光催化降解能力为84~98%/h。本发明提供的制备方法工艺简单,产品性能稳定,适合工业化生产。
2.本发明的技术方案如下:
首先,步骤一制备CuO纳米材料,将 Cu(NO3)2与PVP按照质量比为0.5~1:1混合。然后将混合物置于400~500℃中加热燃烧2~3h。最终得到(CuO-Cu2O)Cu异质结构的纳米材料。步骤二制备ZnO纳米材料,将Zn(NO3)2与PVP混合按照质量比为0.5~1:1混合。将混合物置于300~400℃中加热燃烧2~3h,得到ZnO纳米材料。步骤三制备(CuO-Cu2O)Cu/ZnO纳米复合材料,将硝酸锌和硝酸铜分别以按照质量比为0.5~2:1配制浓度为0.1~0.5mol/L的无水乙醇溶液,然后将步骤一和步骤二中的CuO纳米材料和ZnO纳米材料加入到溶液中,保证溶液中Cu与Zn的质量比为0.5~2:1。然后将混合溶液置于500~600℃下加热燃烧,最终得到(CuO-Cu2O)Cu/ZnO纳米复合材料。
有益效果
1.本发明提供的制备的纳米复合材料具有良好的光催化性能,对MB染料的光催化降解能力为84~98%/h。
2.本发明提供的方法在制备纳米复合材料的过程中,选用高纯的原料粉体,并严格控制杂质的引入,非常适合用于该纳米复合材料的制备。
3.本发明提供的纳米复合材料的制备方法,产量和产率高,制备过程简单,对制备时间安排要求不苛刻,可有效提高产量和降低生产成本,非常适合工业化生产。
附图说明
图1实施例制备纳米复合材料的XRD图谱;
图2实施例3制备的纳米复合材料的局部衍射图像;
图3实施例制备的纳米复合材料在1h内对MB染料的降解情况。
具体实施方式
下面结合具体实例对本发明做进一步的说明,但不应以此限制本发明的保护范围。
实施例1:纳米ZnO
将Zn(NO3)2与PVP混合按照质量比为1:1混合,将混合物置于400℃中加热燃烧2h,得到ZnO纳米材料。
实施例2:纳米(CuO-Cu2O)Cu
将 Cu(NO3)2与PVP按照质量比为0.8:1混合。然后将混合物置于500℃中加热燃烧2h,得到 (CuO-Cu2O)Cu异质结构的纳米材料。
实施例3:纳米(CuO-Cu2O)Cu/ZnO(CCCZ11)
首先,制备CuO纳米材料,将 Cu(NO3)2与PVP按照质量比为1:1混合。然后将混合物置于400℃中加热燃烧3h。最终得到(CuO-Cu2O)Cu异质结构的纳米材料。然后,制备ZnO纳米材料,将Zn(NO3)2与PVP混合按照质量比为0.5:1混合。将混合物置于300℃中加热燃烧3h,得到ZnO纳米材料。然后,制备(CuO-Cu2O)Cu/ZnO纳米复合材料,将硝酸锌和硝酸铜分别以按照质量比为0.5:1配制浓度为0.5mol/L的无水乙醇溶液,然后将上述制备的的CuO纳米材料和ZnO纳米材料加入到溶液中,保证溶液中Cu与Zn的质量比为1:1。然后将混合溶液置于500℃下加热燃烧,最终得到(CuO-Cu2O)Cu/ZnO纳米复合材料。
实施例4:纳米(CuO-Cu2O)Cu/2ZnO(CCCZ12)
首先,制备CuO纳米材料,将 Cu(NO3)2与PVP按照质量比为0.5:1混合。然后将混合物置于500℃中加热燃烧2h。最终得到(CuO-Cu2O)Cu异质结构的纳米材料。然后,制备ZnO纳米材料,将Zn(NO3)2与PVP混合按照质量比为1:1混合。将混合物置于400℃中加热燃烧2h,得到ZnO纳米材料。然后,制备(CuO-Cu2O)Cu/ZnO纳米复合材料,将硝酸锌和硝酸铜分别以按照质量比为2:1配制浓度为0.1mol/L的无水乙醇溶液,然后将上述制备的的CuO纳米材料和ZnO纳米材料加入到溶液中,保证溶液中Cu与Zn的质量比为0.5:1。然后将混合溶液置于600℃下加热燃烧,最终得到(CuO-Cu2O)Cu/ZnO纳米复合材料。
实施例5:纳米2(CuO-Cu2O)Cu/ZnO(CCCZ21)
首先,制备CuO纳米材料,将 Cu(NO3)2与PVP按照质量比为0.8:1混合。然后将混合物置于450℃中加热燃烧2.5h。最终得到(CuO-Cu2O)Cu异质结构的纳米材料。然后,制备ZnO纳米材料,将Zn(NO3)2与PVP混合按照质量比为0.8:1混合。将混合物置于350℃中加热燃烧2.5h,得到ZnO纳米材料。然后,制备(CuO-Cu2O)Cu/ZnO纳米复合材料,将硝酸锌和硝酸铜分别以按照质量比为1:1配制浓度为0.3mol/L的无水乙醇溶液,然后将上述制备的的CuO纳米材料和ZnO纳米材料加入到溶液中,保证溶液中Cu与Zn的质量比为2:1。然后将混合溶液置于550℃下加热燃烧,最终得到(CuO-Cu2O)Cu/ZnO纳米复合材料。
由图1中的XRD图谱可以看出,,其中CCC即(CuO-Cu2O)Cu包含了CuO的峰,CCCZ即2(CuO-Cu2O)Cu/ZnO包含了CCC与ZnO的峰,通过本发明提供的方法成功合成了各步骤的高纯纳米材料。以实施例3为例,根据图2所示,实施例3的局部衍射图像可以看出证明了纳米复合材料是由CuO、Cu2O、Cu和ZnO组成的,即出现了它们的结构,多纳米氧化物复合材料显示出多方向的晶格边缘。图3可以看出,纳米复合材料表现出了更好的光催化降解性能,其中Dark和Photolysis分别为黑暗和光照条件下的空白对照组,本发明制备的纳米复合材料的光催化降解能力最低为84%,最高为98%/h。
最后需要说明的是,以上实施例仅用以说明本发明的技术方案而非限制。尽管参照上述实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的范围,其均应涵盖在本发明的权利要求范围中。
Claims (2)
1.一种高效光催化性能的铜锌多氧化物纳米复合材料,其特征在于,所述氧化物纳米复合材料满足下式所示组分:
(CuO-Cu2O)Cu/ZnO;
采用低温燃烧法制备,具体步骤如下:
步骤一,制备CuO纳米材料:将 Cu(NO3)2与PVP按照质量比为0.5~1:1混合;然后将混合物置于400~500℃中加热燃烧2~3h;最终得到(CuO-Cu2O)Cu异质结构的纳米材料;
步骤二,制备ZnO纳米材料:将Zn(NO3)2与PVP混合按照质量比为0.5~1:1混合;将混合物置于300~400℃中加热燃烧2~3h,得到ZnO纳米材料;
步骤三,制备(CuO-Cu2O)Cu/ZnO纳米复合材料:将硝酸锌和硝酸铜分别以按照质量比为0.5~2:1配制浓度为0.1~0.5mol/L的无水乙醇溶液,然后将步骤一和步骤二中的CuO纳米材料和ZnO纳米材料加入到溶液中,保证溶液中Cu与Zn的质量比为0.5~2:1;然后将混合溶液置于500~600℃下加热燃烧,最终得到(CuO-Cu2O)Cu/ZnO纳米复合材料。
2.一种高效光催化性能的铜锌多氧化物纳米复合材料,其特征在于,所述纳米复合材料对MB染料的光催化降解能力为84~98%/h。
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