CN109518455A - 一种负载纳米碳和二氧化钛的无纺布及其制备方法 - Google Patents
一种负载纳米碳和二氧化钛的无纺布及其制备方法 Download PDFInfo
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 25
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 21
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- 229910021392 nanocarbon Inorganic materials 0.000 claims abstract description 12
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 11
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- 240000007594 Oryza sativa Species 0.000 claims 1
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
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- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 2
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- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical compound C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
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Abstract
本发明涉及一种负载纳米碳和二氧化钛的无纺布及其制备方法。所述的每平方厘米无纺布中含有0.0001‑0.1mg的纳米碳和0.01‑1.0mg的TiO2。通过将无纺布负载纳米碳颗粒,然后负载纳米TiO2后得到负载纳米碳和二氧化钛的无纺布。与现有技术相比,本发明具有产率高、便于回收、过程简便,容易操作等优点,可进行工业化生产。
Description
技术领域
本发明涉及一种有负载的无纺布,尤其是涉及一种负载纳米碳和二氧化钛的无纺布及其制备方法。
背景技术
纳米碳颗粒是一类尺寸在10nm以下且形貌为类球形的具有特殊结构(石墨烯、金刚石结构等)的多色荧光新型碳纳米材料,也是继富勒烯、碳纳米管、石墨烯之后最受关注的新型碳纳米材料之一。它具有水溶性好、易表面修饰、生物毒性低、生物相容性好,以及发光性能稳定等一系列优点,在生物医学、环境能源和催化等领域有着重要的研究应用前景。
TiO2是一种重要的无机半导体光催化剂,其具有良好的化学稳定性和热稳定性、高效、无毒、适用性广且成本低,并且能够利用光能促进化合物反应等优点,所以TiO2在太阳能光解水、消除水中污染物、净化空气等方面具有广阔的应用前景。
目前,专利CN108914390A公开了一种含有负载TiO2的活性炭的抗菌无纺布,专利CN108067214A公开了一种碳掺杂二氧化钛光催化剂,而上述产品不仅制备工艺复杂,且其中的碳和TiO2均未达到纳米级别,专利CN108914390A活性炭颗粒较大负载容易脱落,长时间使用会造成污染和失效;专利CN108067214A二氧化钛不是固定在载体上,容易流失,不易回收二次利用。因此,现有技术中迫切需要解决的问题是如何将用纳米碳颗粒和TiO2共同制备出来的催化剂实际应用到生活中及如何回收这些催化剂而避免造成二次污染。
发明内容
本发明的目的就是为了克服上述现有技术存在的缺陷而提供一种制备过程简单,催化剂易回收且成本低廉的负载纳米碳和二氧化钛的无纺布及其制备方法。
本发明的目的可以通过以下技术方案来实现:
一种负载纳米碳和二氧化钛的无纺布,所述的每平方厘米无纺布中含有0.0001-0.1mg的纳米碳和0.01-1.0mg的TiO2。
进一步地,所述的无纺布的纤维含有丙纶(PP)、涤纶(PET)、锦纶(PA)、粘胶纤维、腈纶、乙纶(HDPE)和氯纶(PVC)的一种或几种。
进一步地,纳米碳粒径为0.5-100nm,所述的TiO2粒径为1.0-100nm。
一种负载纳米碳和二氧化钛的无纺布的制备方法,采用以下步骤:
(1)将无纺布在纳米碳颗粒溶液中浸泡、烘干;
(2)将步骤(1)所得无纺布置于TiO2溶液中浸泡、清洗、烘干,得到负载纳米碳和二氧化钛的无纺布。
进一步地,步骤(1)中纳米碳颗粒溶液浓度为0.00005-0.2mg/mL,优选0.005-0.1mg/mL,用量范围为0.5-2mL/cm2无纺布,优选0.8~1mL/cm2无纺布。
进一步地,步骤(2)中TiO2溶液的浓度为0.005-10mg/mL,优选0.05-1mg/mL,用量范围为0.1-2mL/cm2无纺布,优选0.5~4mL/cm2无纺布。
与现有技术相比,本发明提供的技术方案具有如下优点:
1、本发明提供了一种全新的无纺布负载纳米碳和纳米TiO2的制备工艺,该工艺过程制备过程简单,可适合工业化生产;且纳米碳表面含有大量基团,可以作为纳米TiO2和无纺布纤维之间的粘结剂,使纳米TiO2颗粒牢固的固定在无纺布纤维上,且纳米TiO2粒径小,易进入无纺布孔径内,并与纤维表面进行紧密结合,在催化反应结束后将无纺布晾干即可再次使用,易于回收且成本低廉。
2、本发明将纳米碳颗粒及TiO2共同负载到无纺布上,利用纳米碳颗粒本身具有导电性,能够吸引电子迁移到碳表面,有效抑制半导体TiO2光生电子和空穴复合的作用,增强了TiO2光催化活性。
附图说明
图1为本发明实施例1中所得负载纳米碳和二氧化钛的无纺布的SEM图。
具体实施方式
下面结合附图和具体实施例对本发明进行详细说明。
实施例1
(1)将5cm2无纺布在5mL浓度为0.5mg/mL的纳米碳颗粒溶液中浸泡、烘干;
(2)将步骤(1)所得无纺布置于20mL浓度为0.05g/L的TiO2溶液中浸泡、清洗、烘干,得到负载纳米碳和二氧化钛的无纺布。
实施例2
(1)将5cm2无纺布在0.1mL浓度为0.00005mg/mL的纳米碳颗粒溶液中浸泡、烘干;
(2)将步骤(1)所得无纺布置于10mL浓度为0.005mg/mL的TiO2溶液中浸泡、清洗、烘干,得到负载纳米碳和二氧化钛的无纺布。
实施例3
(1)将5cm2无纺布在2.5mL浓度为0.2mg/mL的纳米碳颗粒溶液中浸泡、烘干;
(2)将步骤(1)所得无纺布置于0.5mL浓度为10mg/mL的TiO2溶液中浸泡、清洗、烘干,得到负载纳米碳和二氧化钛的无纺布。
上述实施例所得产品以光降解罗丹明B为探针反应进行循环实验,探究其催化性,在10次循环后,探究其稳定性,将所得产品催化降解罗丹明B后,晾干,进行第二次回收使用,侧其化学稳定性,如下表1所示:
上述实施例所得无纺布的性能如下表1所示:
可以看出,本发明方法制得的产品催化性能高、稳定性强。
以上所述仅为本发明的优选实施例,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包括在本发明的保护范围之内。
Claims (6)
1.一种负载纳米碳和二氧化钛的无纺布,其特征在于,所述的每平方厘米无纺布中含有0.0001-0.1mg的纳米碳和0.01-1.0mg的TiO2。
2.根据权利要求1所述的一种负载纳米碳和二氧化钛的无纺布,其特征在于,所述的无纺布的纤维含有丙纶(PP)、涤纶(PET)、锦纶(PA)、粘胶纤维、腈纶、乙纶(HDPE)和氯纶(PVC)的一种或几种。
3.根据权利要求1所述的一种负载纳米碳和二氧化钛的无纺布,其特征在于,所述的纳米碳粒径为0.5-100nm,所述的TiO2粒径为1.0-100nm。
4.一种根据权利要求1所述的负载纳米碳和二氧化钛的无纺布的制备方法,其特征在于,所述的制备方法包括以下步骤:
(1)将无纺布在纳米碳颗粒溶液中浸泡、烘干;
(2)将步骤(1)所得无纺布置于TiO2溶液中浸泡、清洗、烘干,得到负载纳米碳和二氧化钛的无纺布。
5.根据权利要求1所述的一种负载纳米碳和二氧化钛的无纺布的制备方法,其特征在于,步骤(1)中纳米碳颗粒溶液浓度为0.00005-0.2mg/mL,用量范围为0.5-2mL/cm2无纺布。
6.根据权利要求1所述的一种负载纳米碳和二氧化钛的无纺布的制备方法,其特征在于,步骤(2)中TiO2溶液的浓度为0.005-10mg/mL,用量范围为0.1-2mL/cm2无纺布。
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