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首页> 外文期刊>Journal of Applied Polymer Science >Upgrading poly(styrene-co-divinylbenzene) beads: Incorporation of organomodified metal-free semiconductor graphitic carbon nitride through suspension photopolymerization to generate photoactive resins
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Upgrading poly(styrene-co-divinylbenzene) beads: Incorporation of organomodified metal-free semiconductor graphitic carbon nitride through suspension photopolymerization to generate photoactive resins

机译：通过悬浮光聚合升高聚（苯乙烯 - 共二二乙烯基苯）珠子：通过悬浮光聚合掺入通过悬浮光聚合以产生光活性树脂

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摘要

The inclusion of the metal free semiconductor graphitic carbon nitride (g-CN) into polymer systems brings a variety of new options, for instance as a heterogeneous photoredox polymer initiator. In this context, we present here the decoration of the inner surface of poly(styrene-co-divinylbenzene) beads with organomodified g-CN via one pot suspension photopolymerization. The resulting beads are varied by changing reaction parameters, such as, crosslinking ratio, presence of porogens, and mechanical agitation. The photocatalytic activity of so-formed beads was tested by aqueous rhodamine B dye photodegradation experiments. Additionally, dye adsorption/desorption properties were examined in aqueous as well as in organic solvents. Photoinduced surface modification with vinylsulfonic acid and 4-vinyl pyridine is introduced. Overall, metal-free semiconductor g-CN donates photoactivity to polymer networks that can be employed for dye photodegradation and acid-base catalyst transformation through facile photoinduced surface modifications.
机译：将无金属半导体石墨碳氮化物（g-CN）纳入聚合物体系带来了多种新选择，例如作为非均相Photodox聚合物引发剂。在此背景下，我们通过一锅悬浮光聚合，用有机改性的g-CN修饰聚（苯乙烯-二乙烯基苯）微球的内表面。通过改变反应参数，如交联率、成孔剂的存在和机械搅拌，可以改变生成的微珠。通过水溶液罗丹明B染料光降解实验测试了所制备微球的光催化活性。此外，还研究了染料在水溶液和有机溶剂中的吸附/解吸性能。介绍了乙烯基磺酸和4-乙烯基吡啶的光诱导表面改性。总的来说，无金属半导体g-CN为聚合物网络提供光活性，可通过简单的光诱导表面修饰用于染料光降解和酸碱催化剂转化。

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