Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Hybrids of Bowl-like and Crumpled Hollow Carbon Particles Synthesized through Encapsulation Templating.
Langmuir ( IF 3.7 ) Pub Date : 2019-12-31 , DOI: 10.1021/acs.langmuir.9b01835 Parvin Kiany 1 , Fatemeh Goharpey 1 , Majid Karimi 2 , Reza Foudazi 3
Langmuir ( IF 3.7 ) Pub Date : 2019-12-31 , DOI: 10.1021/acs.langmuir.9b01835 Parvin Kiany 1 , Fatemeh Goharpey 1 , Majid Karimi 2 , Reza Foudazi 3
Affiliation
|
The one-pot synthesis of hybrid hollow nanoparticles of symmetric and asymmetric shapes is a challenging task and has rarely been reported. This work proposes a method for a high-yield synthesis of hybrid hollow carbon particles. In the first step, hexadecane/styrene (HD/St) is encapsulated in a silica shell. Then, by the polymerization of St, a silica/polystyrene double shell is formed. Finally, hollow carbon particles with bowl-like and crumpled shapes are obtained by carbonization. The results show that the ratio of diameter to thickness (D/H) for obtaining crumpled particles is ∼4-12, whereas this ratio is ∼7-18 for bowl-like particles. We study the effects of HD and St concentrations on the D/H ratio and the composition of hybrid particles. In contrast to suspensions of hollow carbon spheres, the suspensions of hybrid nanoparticles show shear-thinning behavior over the examined range of shear rates, which is attributed to their enhanced packing. The shape effect of hybrid particles also increases their adsorption on human mesenchymal stem cells (hMSCs) compared to the hollow carbon spheres.
中文翻译：
通过封装模板合成的碗状和皱巴状中空碳颗粒的杂化物。
对称和不对称形状的杂化空心纳米粒子的一锅法合成是一项艰巨的任务，鲜有报道。这项工作提出了一种高产率合成杂化空心碳颗粒的方法。第一步，将十六烷/苯乙烯（HD / St）封装在二氧化硅壳中。然后，通过St的聚合，形成二氧化硅/聚苯乙烯双壳。最后，通过碳化获得具有碗状和皱折形状的中空碳颗粒。结果表明，获得皱褶颗粒的直径与厚度之比（D / H）约为4-12，而碗状颗粒的直径与厚度之比约为7-18。我们研究了HD和St浓度对D / H比和杂化颗粒组成的影响。与空心碳球的悬浮液相反，在检查的剪切速率范围内，杂化纳米颗粒的悬浮液显示出剪切稀化行为，这归因于其增强的堆积。与空心碳球相比，杂化颗粒的形状效应还增加了它们对人间充质干细胞（hMSCs）的吸附。
更新日期：2019-12-31
中文翻译：
通过封装模板合成的碗状和皱巴状中空碳颗粒的杂化物。
对称和不对称形状的杂化空心纳米粒子的一锅法合成是一项艰巨的任务，鲜有报道。这项工作提出了一种高产率合成杂化空心碳颗粒的方法。第一步，将十六烷/苯乙烯（HD / St）封装在二氧化硅壳中。然后，通过St的聚合，形成二氧化硅/聚苯乙烯双壳。最后，通过碳化获得具有碗状和皱折形状的中空碳颗粒。结果表明，获得皱褶颗粒的直径与厚度之比（D / H）约为4-12，而碗状颗粒的直径与厚度之比约为7-18。我们研究了HD和St浓度对D / H比和杂化颗粒组成的影响。与空心碳球的悬浮液相反，在检查的剪切速率范围内，杂化纳米颗粒的悬浮液显示出剪切稀化行为，这归因于其增强的堆积。与空心碳球相比，杂化颗粒的形状效应还增加了它们对人间充质干细胞（hMSCs）的吸附。
京公网安备 11010802027423号