Patchy Templated Synthesis of Macroporous Colloidal Hollow Spheres and Their Application as Catalytic Microreactors.,ACS Applied Materials & Interfaces

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Patchy Templated Synthesis of Macroporous Colloidal Hollow Spheres and Their Application as Catalytic Microreactors.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-12-04 , DOI: 10.1021/acsami.9b18355
Na Liu ₁ , Shuping Zhao _{2,

3} , Zhenglong Yang ₁ , Bing Liu _{2,

3}

Affiliation

Porous colloidal hollow spheres have been applied to diversified fields over the past few decades. However, developing simple and efficient methods to prepare such porous hollow spheres with macro pores remains a challenge. To address this problem, we present a patchy templated synthesis route, which can be used to prepare such colloidal hollow spheres that have macro pores through the shells. This was achieved by using patchy poly(styrene-co-sodium styrenesulfonate) spheres as the template and poly(allylamine hydrochloride) as binding molecules. SiO2 can site-selectively only grow on one kind of patch, resulting in the formation of porous hollow spheres. The pore sizes can be tuned from ∼50 to 400 nm. The resulting porous hollow spheres have a Janus character so that Au nanoparticles can only be attached to the interior surfaces in situ, which can be used as catalytic microreactors and show the catalytic performance of pore size dependence.

中文翻译：

大孔胶体空心球的修补模板化合成及其在催化微反应器中的应用。

在过去的几十年中，多孔胶体空心球已应用于多种领域。然而，开发简单有效的方法来制备具有大孔的这种多孔空心球仍然是一个挑战。为了解决这个问题，我们提出了一种斑驳的模板化合成路线，该路线可用于制备具有穿过壳的大孔的胶体空心球。这是通过使用斑驳的聚苯乙烯-苯乙烯磺酸钠共聚物球作为模板和聚烯丙胺盐酸盐作为结合分子来实现的。SiO2只能在一种贴剂上选择性地生长，从而形成多孔空心球。孔径可在约50至400 nm之间调整。所得的多孔空心球具有Janus特性，因此Au纳米颗粒只能原位附着于内表面，

更新日期：2019-12-04

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