CN114832850A - 一种层状羟基硝酸氧铋纳米片及制备方法和应用 - Google Patents
一种层状羟基硝酸氧铋纳米片及制备方法和应用 Download PDFInfo
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- 239000002135 nanosheet Substances 0.000 title claims abstract description 38
- HWSISDHAHRVNMT-UHFFFAOYSA-N Bismuth subnitrate Chemical compound O[NH+]([O-])O[Bi](O[N+]([O-])=O)O[N+]([O-])=O HWSISDHAHRVNMT-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229960001482 bismuth subnitrate Drugs 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
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- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 11
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- 229910052797 bismuth Inorganic materials 0.000 claims description 11
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 11
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 claims description 10
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 10
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 10
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- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical group Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims description 4
- 229910000380 bismuth sulfate Inorganic materials 0.000 claims description 3
- BEQZMQXCOWIHRY-UHFFFAOYSA-H dibismuth;trisulfate Chemical compound [Bi+3].[Bi+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BEQZMQXCOWIHRY-UHFFFAOYSA-H 0.000 claims description 3
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Abstract
本发明属于无机纳米材料领域,公开了一种层状羟基硝酸氧铋纳米片及制备方法和应用。该方法包括如下步骤:采用熔点为200~500℃的硝酸盐,将其在高于熔点20~50℃的温度下加热熔融,形成透明液态盐;将铋盐与透明液态盐混合并反应,得到反应产物经降温、清洗和干燥处理,得到层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片。本发明能够在较低的温度和极短的时间内合成具有超薄纳米片形貌的Bi6O6(OH)3(NO3)3·1.5H2O材料。
Description
技术领域
本发明属于无机纳米材料领域,更具体地,涉及一种层状羟基硝酸氧铋(Bi6O6(OH)3(NO3)3·1.5H2O)纳米片及制备方法和应用。
背景技术
工业废水污染主要有三类,包括重金属阳离子、有害阴离子以及有机污染物。其中,有机污染物又包括酚类、苯类以及高分子聚合物等,这些污染物具有易富集、易致畸致癌等特点,对人体健康和生态平衡造成极大危害。目前对含有机污染物的废水的处理工艺主要有物理法和化学法,其中,光催化技术是典型的化学法,其成本低,能够循环使用,且降解后的产物能够实现零污染,不会对水体造成二次污染等优点,因而被广泛应用于有机污染物的治理。
铋基催化剂由于其独特的电子结构和原子排布,具有较强的光吸收性能,因此对有机物具有很强的降解能力。我国具有丰富的铋资源,储量大,但对铋资源的利用率还不高。大多数铋基催化材料具有层状结构,比如Bi2O3、BiVO4、Bi2WO6等都在光催化中性能优异。而同样具有层状结构的羟基硝酸氧铋(Bi6O6(OH)3(NO3)3·1.5H2O)也具有较好的光催化性能,但目前合成Bi6O6(OH)3(NO3)3·1.5H2O材料主要采用水热法,合成周期长,且产率较低,限制了其实际应用。
因此,目前亟待提出一种新的制备层状羟基硝酸氧铋(Bi6O6(OH)3(NO3)3·1.5H2O)纳米片的方法并将其应用于光催化领域。
发明内容
本发明的目的是针对现有技术的不足,提出一种层状羟基硝酸氧铋(Bi6O6(OH)3(NO3)3·1.5H2O)纳米片及制备方法和应用。本发明能够在较低的温度和极短的时间内合成具有超薄纳米片形貌的羟基硝酸氧铋(Bi6O6(OH)3(NO3)3·1.5H2O)材料。
为了实现上述目的,本发明第一方面提供了一种层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片的制备方法,该方法包括如下步骤:
S1:采用熔点为200~500℃的硝酸盐,将其在高于熔点20~50℃的温度下加热熔融,形成透明液态盐;
S2:将铋盐与所述透明液态盐混合并反应,得到反应产物经降温、清洗和干燥处理,得到所述层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片。
根据本发明,优选地,所述硝酸盐和所述铋盐的质量比为(3~5):(0.2~0.6)。
根据本发明,优选地,所述硝酸盐为硝酸锂、硝酸钠和硝酸钾中的至少一种。
根据本发明,优选地,所述铋盐为硝酸铋和/或硫酸铋。
根据本发明,优选地,所述铋盐与所述透明液态盐反应的时间为3~5min。
根据本发明,优选地,所述降温处理为将所述反应产物降至室温。
根据本发明,优选地,所述干燥处理的温度为50~80℃。
根据本发明,优选地,所述步骤S1和步骤S2均在马弗炉中进行。
本发明第二方面提供了所述的层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片的制备方法制备得到的层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片。
根据本发明,优选地,所述层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片的厚度为1.3~2.7nm。
本发明第三方面提供了所述的层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片在光催化领域中的应用。
本发明的技术方案的有益效果如下:
(1)本发明采用低熔点硝酸盐作为液态反应介质,有利于离子传输,从而能够在极短的时间内实现Bi6O6(OH)3(NO3)3·1.5H2O纳米片的合成,相比于水热法,本发明方法合成时间短。
(2)本发明能够在较低的温度和极短的时间内合成具有超薄纳米片形貌的Bi6O6(OH)3(NO3)3·1.5H2O材料,其厚度在1.3~2.7nm范围内。
本发明的其它特征和优点将在随后具体实施方式部分予以详细说明。
附图说明
通过结合附图对本发明示例性实施方式进行更详细的描述,本发明的上述以及其它目的、特征和优势将变得更加明显,其中,在本发明示例性实施方式中,相同的参考标号通常代表相同部件。
图1示出了本发明实施例1提供的层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片的制备方法制备得到的层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片的扫描电子显微镜图像。
图2示出了本发明实施例1提供的层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片的制备方法制备得到的层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片在原子力显微镜下测试的厚度图像。
具体实施方式
下面将更详细地描述本发明的优选实施方式。虽然以下描述了本发明的优选实施方式,然而应该理解,可以以各种形式实现本发明而不应被这里阐述的实施方式所限制。相反,提供这些实施方式是为了使本发明更加透彻和完整,并且能够将本发明的范围完整地传达给本领域的技术人员。
实施例1
本实施例提供一种层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片的制备方法,该方法包括如下步骤:
S1:称取5g硝酸钠粉末置于坩埚中并放入马弗炉中,将马弗炉加热至335℃使硝酸钠粉末熔融,形成透明液态盐;
S2:将0.3g硝酸铋加入到上述透明液态盐中,反应3分钟后,得到反应产物并自然降至室温,清洗反应产物以去除其中的硝酸盐和杂质,并在60℃下进行干燥,得到层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片粉末。
将得到的层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片粉末在扫描电子显微镜下测试其表面形貌并在原子力显微镜下测试其厚度,如图1所示,本实施例得到的Bi6O6(OH)3(NO3)3·1.5H2O具有超薄纳米片微观形貌。如图2所示,本实施例得到的纳米片的厚度为1.3nm。
实施例2
本实施例提供一种层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片的制备方法,该方法包括如下步骤:
S1:称取4g硝酸钾粉末置于坩埚中并放入马弗炉中,将马弗炉加热至360℃使硝酸钾粉末熔融,形成透明液态盐;
S2:将0.4g硝酸铋加入到上述透明液态盐中,反应4分钟后,得到反应产物并自然降至室温,清洗反应产物以去除其中的硝酸盐和杂质,并在80℃下进行干燥,得到层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片粉末,在原子力显微镜下测试其厚度为2.7nm。
实施例3
本实施例提供一种层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片的制备方法,该方法包括如下步骤:
S1:称取5g硝酸锂粉末置于坩埚中并放入马弗炉中,将马弗炉加热至300℃使硝酸锂粉末熔融,形成透明液态盐;
S2:将0.3g硫酸铋加入到上述透明液态盐中,反应3分钟后,得到反应产物并自然降至室温,清洗反应产物以去除其中的硝酸盐和杂质,并在70℃下进行干燥,得到层状Bi6O6(OH)3(NO3)3·1.5H2O纳米片粉末,在原子力显微镜下测试其厚度为1.5nm。
以上已经描述了本发明的各实施例,上述说明是示例性的,并非穷尽性的,并且也不限于所披露的各实施例。在不偏离所说明的各实施例的范围和精神的情况下,对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。
Claims (10)
1.一种层状羟基硝酸氧铋纳米片的制备方法,其特征在于,该方法包括如下步骤:
S1:采用熔点为200~500℃的硝酸盐,将其在高于熔点20~50℃的温度下加热熔融,形成透明液态盐;
S2:将铋盐与所述透明液态盐混合并反应,得到反应产物经降温、清洗和干燥处理,得到所述层状羟基硝酸氧铋纳米片。
2.根据权利要求1所述的层状羟基硝酸氧铋纳米片的制备方法,其中,所述硝酸盐和所述铋盐的质量比为(3~5):(0.2~0.6)。
3.根据权利要求1所述的层状羟基硝酸氧铋纳米片的制备方法,其中,所述硝酸盐为硝酸锂、硝酸钠和硝酸钾中的至少一种。
4.根据权利要求1所述的层状羟基硝酸氧铋纳米片的制备方法,其中,所述铋盐为硝酸铋和/或硫酸铋。
5.根据权利要求1所述的层状羟基硝酸氧铋纳米片的制备方法,其中,所述铋盐与所述透明液态盐反应的时间为3~5min。
6.根据权利要求1所述的层状羟基硝酸氧铋纳米片的制备方法,其中,
所述降温处理为将所述反应产物降至室温;
所述干燥处理的温度为50~80℃。
7.根据权利要求1所述的层状羟基硝酸氧铋纳米片的制备方法,其中,所述步骤S1和步骤S2均在马弗炉中进行。
8.根据权利要求1-7中任意一项所述的层状羟基硝酸氧铋纳米片的制备方法制备得到的层状羟基硝酸氧铋纳米片。
9.根据权利要求8所述的层状羟基硝酸氧铋纳米片,其中,所述层状羟基硝酸氧铋纳米片的厚度为1.3~2.7nm。
10.根据权利要求8所述的层状羟基硝酸氧铋纳米片在光催化领域中的应用。
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