Šorm David, Brus Jiří, Pintar Albin, Sedláček Jan, Kovačič Sebastijan
Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2 128 43, Czech Republic.
Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovský Sq. 2, 162 00 Prague, Czech Republic.
ACS Polym Au. 2024 Jun 6;4(5):420-427. doi: 10.1021/acspolymersau.4c00032. eCollection 2024 Oct 9.
In this article, we report a series of functionalized polyacetylene-type networks formed by chain-growth insertion coordination polymerization in high internal phase emulsions (HIPEs). All polymerized HIPEs (polyHIPEs) contain a hierarchically structured, 3D-interconnected porous framework consisting of a micro-, meso- and macropore system, resulting in exceptionally high specific surface areas (up to 1055 m·g) and total porosities of over 95%. The combination of π-conjugated and hierarchically porous structure in one material enabled the use of these polyacetylene polyHIPEs as adsorptive photocatalysts for the removal of chemical contaminants from water. All polyacetylene polyHIPEs demonstrated high efficiency in the adsorption of bisphenol A from water (up to 48%) and the subsequent photocatalytic degradation. Surprisingly, high adsorption capacity did not affect the photocatalytic efficiency (up to 58%). On the contrary, this dual function seems to be very promising, as some polyacetylene polyHIPEs almost completely removed bisphenol A from water (97%) through the adsorption-photooxidation mechanism. It also appears that the presence of polar functional side groups in the polyacetylene backbone improves the contact of the polyacetylene network with the aqueous bisphenol A solution, which can thus be more easily adsorbed and subsequently oxidized, compensating for the lower specific surface area of some networks, namely, 471 and 308 m·g in the case of 3-ethynylphenol- and 3-ethynylaniline-based polyacetylene polyHIPEs, respectively.
在本文中，我们报道了一系列通过高内相乳液（HIPEs）中的链增长插入配位聚合形成的功能化聚乙炔型网络。所有聚合的HIPEs（聚HIPEs）都包含一个由微孔、介孔和大孔系统组成的分级结构的三维互连多孔框架，从而产生了极高的比表面积（高达1055 m·g）和超过95%的总孔隙率。一种材料中π共轭和分级多孔结构的结合使得这些聚乙炔聚HIPEs能够用作吸附光催化剂，用于去除水中的化学污染物。所有聚乙炔聚HIPEs在从水中吸附双酚A（高达48%）以及随后的光催化降解方面都表现出高效率。令人惊讶的是，高吸附容量并未影响光催化效率（高达58%）。相反，这种双重功能似乎非常有前景，因为一些聚乙炔聚HIPEs通过吸附 - 光氧化机制几乎完全从水中去除了双酚A（97%）。还似乎聚乙炔主链中极性官能侧基的存在改善了聚乙炔网络与双酚A水溶液的接触，从而可以更容易地被吸附并随后被氧化，弥补了一些网络较低的比表面积，即在基于3 - 乙炔基苯酚和3 - 乙炔基苯胺的聚乙炔聚HIPEs的情况下，分别为471和308 m·g。
