模板法制备聚苯胺纳米管状结构材料
摘要
本文通过采用拥有孔洞的材料作为模板,杂多酸为掺杂剂,过硫酸铵为氧化剂成功地合成了掺杂态的聚苯胺纳米管状材料。系统地研究了模板材料的结构、形态对合成聚苯胺的微观形貌、和气敏性质的影响,所得到的掺杂态聚苯胺纳米管状材料具有良好的气敏性质。
1.以玻璃管为模板,杂多酸为掺杂剂,过硫酸铵为氧化剂,成功地制备了多酸掺杂的聚苯胺纳米管状材料。聚苯胺的结构和形态通过红外光谱、X-射线粉末衍射、扫描电镜、透射扫描电镜测试手段进行了表征。其内部直径在50 nm到100 nm之间。
2.我们报道了一种绿色环保的方法合成聚苯胺纳米管状材料。以鸡蛋膜为模板一步合成了大量均一的聚苯胺纳米管状材料。我们通过一系列的实验验证了鸡蛋膜所拥有的孔为聚苯胺管状材料的形成提供了模板功能。同时对其形成机制进行了推测。
3.采用静电高压装置将PVA质量分数为10 wt.%的溶液通过电纺技术进行纺丝,得到PVA纤维毯。以此PVA纤维毯为模板,制得了H4SiW12O40掺杂的聚苯胺纳米管状材料,电镜照片证实了本产品为管状结构,外部直径在150-400 nm之间,内部直径在50-250 nm之间,并给出了合理的推测和解释。
4.聚苯胺纳米管状材料由于具有小尺寸效应,并具有比表面积高的特征,我们分别对以不同的材料作为模板制备的聚苯胺纳米管进行了气敏性质的测试。
In this article, PANI nanotubes were successfully prepared by using materials with pores as a single template in the presence of H4SiW12O40 and ammonium persulfate ((NH4)2S2O8), which were regarded as dopant and oxidant, respectively, in this system. Morphology and structure of the templates was an important impact on micro-morphology, structure, and sensitivity. The diameter of PANI nanotubes is at nanoscale, which indicates their superior performance as chemical sensors.
1. PANI nanotubes were successfully prepared by using thin glass tubes as a single template in the presence of H4SiW12O40 and ammonium persulfate, which were used as dopant and oxidant, respectively, in this system. The structure and morphology of the PANI were characterized by IR spectrum, XRD pattern, SEM images, and TEM images. The inner diameter of PANI nanotubes was between 50 and 100 nm.
2. We report a novel, green method which by using inner eggshell membrane as a single template to synthesize polyaniline (PANI) one-dimensional nano-structured materials with hollow interior in one step. A series of experimental results indicated that the pores of the eggshell membrane plays key role in the final morphology of PANI. At the same time, possible formation mechanism of PANI nanotubes was proposed.
3. 10 wt. % PVA fiber mats were prepared by high static voltage equipment. We used the PVA nanofiber mats as a template to synthesize the SiW12/PANI nanotubes. Nanotube morphology of the polyaniline was shown in the SEM images. The outer and inner diameters of the PANI nanotubes are 150-400 nm and 50-250 nm, respectively.
4. The polyaniline nanotubes with high surface areas, small diameter, and porous nature have better performance in both sensitivity and time response. Therefore, we examine the sensitivity and time response of polyaniline nanotubes in more details.
1.以玻璃管为模板,杂多酸为掺杂剂,过硫酸铵为氧化剂,成功地制备了多酸掺杂的聚苯胺纳米管状材料。聚苯胺的结构和形态通过红外光谱、X-射线粉末衍射、扫描电镜、透射扫描电镜测试手段进行了表征。其内部直径在50 nm到100 nm之间。
2.我们报道了一种绿色环保的方法合成聚苯胺纳米管状材料。以鸡蛋膜为模板一步合成了大量均一的聚苯胺纳米管状材料。我们通过一系列的实验验证了鸡蛋膜所拥有的孔为聚苯胺管状材料的形成提供了模板功能。同时对其形成机制进行了推测。
3.采用静电高压装置将PVA质量分数为10 wt.%的溶液通过电纺技术进行纺丝,得到PVA纤维毯。以此PVA纤维毯为模板,制得了H4SiW12O40掺杂的聚苯胺纳米管状材料,电镜照片证实了本产品为管状结构,外部直径在150-400 nm之间,内部直径在50-250 nm之间,并给出了合理的推测和解释。
4.聚苯胺纳米管状材料由于具有小尺寸效应,并具有比表面积高的特征,我们分别对以不同的材料作为模板制备的聚苯胺纳米管进行了气敏性质的测试。
In this article, PANI nanotubes were successfully prepared by using materials with pores as a single template in the presence of H4SiW12O40 and ammonium persulfate ((NH4)2S2O8), which were regarded as dopant and oxidant, respectively, in this system. Morphology and structure of the templates was an important impact on micro-morphology, structure, and sensitivity. The diameter of PANI nanotubes is at nanoscale, which indicates their superior performance as chemical sensors.
1. PANI nanotubes were successfully prepared by using thin glass tubes as a single template in the presence of H4SiW12O40 and ammonium persulfate, which were used as dopant and oxidant, respectively, in this system. The structure and morphology of the PANI were characterized by IR spectrum, XRD pattern, SEM images, and TEM images. The inner diameter of PANI nanotubes was between 50 and 100 nm.
2. We report a novel, green method which by using inner eggshell membrane as a single template to synthesize polyaniline (PANI) one-dimensional nano-structured materials with hollow interior in one step. A series of experimental results indicated that the pores of the eggshell membrane plays key role in the final morphology of PANI. At the same time, possible formation mechanism of PANI nanotubes was proposed.
3. 10 wt. % PVA fiber mats were prepared by high static voltage equipment. We used the PVA nanofiber mats as a template to synthesize the SiW12/PANI nanotubes. Nanotube morphology of the polyaniline was shown in the SEM images. The outer and inner diameters of the PANI nanotubes are 150-400 nm and 50-250 nm, respectively.
4. The polyaniline nanotubes with high surface areas, small diameter, and porous nature have better performance in both sensitivity and time response. Therefore, we examine the sensitivity and time response of polyaniline nanotubes in more details.
引文
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