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Improved visible‐light photocatalytic activities of carboxylate functionalized polystyrene@Fe3O4 nanocomposite and its mechanism insight
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2020-12-10 , DOI: 10.1002/jccs.202000365 Nighat Zarshad 1 , Iltaf Khan 2 , Anis Ur Rahman 3 , Asad Ali 4, 5 , Saeed Zaman 6 , Shoaib Khan 7 , Humaira Yasmeen 8 , Naveed Qadar 4 , Kezhen Qi 9 , Henmei Ni 1
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2020-12-10 , DOI: 10.1002/jccs.202000365 Nighat Zarshad 1 , Iltaf Khan 2 , Anis Ur Rahman 3 , Asad Ali 4, 5 , Saeed Zaman 6 , Shoaib Khan 7 , Humaira Yasmeen 8 , Naveed Qadar 4 , Kezhen Qi 9 , Henmei Ni 1
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Herein, we report a unique approach to synthesize dimpled shape carboxylate functionalized polystyrene (C‐PS), which were subsequently coated with Fe3O4 nanoparticles in situ by co‐precipitation method. The magnetization of C‐PS@Fe3O4 nanocomposite has been verified through vibrating sample magnetometer (VSM) measurements. The amount optimized carboxylate functionalized magnetic polystyrene (C‐PS@Fe3O4) exhibits 5.2 and 2.2‐times enhancement in visible‐light photocatalytic activities for 2,4‐dichlorophenol degradation compared with that of pristine PS and C‐PS. Based on various electro‐analytical techniques like surface photovoltage spectroscopy, temperature‐programmed desorption, Uv‐DRS, Scanning electron microscopy, transmission electron microscopy and VSM confirming magnetic nature of C‐PS@Fe3O4. Our results suggest that the improvement in visible light activities of C‐PS@Fe3O4 are comprehensively assigned to the large and active surface area due to charge separation, catalytic functions, and magnetic nature induced by Fe3O4 nanoparticles. Finally, this work will provide new strategy to synthesize visible light active nano photocatalysts with controllable shape, which for efficient environmental remediation.
中文翻译：
羧酸盐官能化聚苯乙烯@ Fe3O4纳米复合材料的可见光光催化活性提高及其机理研究
本文中，我们报告了一种独特的方法，用于合成凹形羧酸盐官能化聚苯乙烯（C-PS），然后通过共沉淀法原位涂覆Fe 3 O 4纳米颗粒。C‐PS @ Fe 3 O 4纳米复合材料的磁化强度已通过振动样品磁强计（VSM）的测量得到验证。最佳量的羧酸盐官能化磁性聚苯乙烯（C-PS @ Fe 3 O 4）与原始PS和C-PS相比，可见光对2,4-二氯苯酚降解的光催化活性提高了5.2和2.2倍。基于各种电分析技术，例如表面光电压光谱，程序升温脱附，Uv-DRS，扫描电子显微镜，透射电子显微镜和VSM，这些材料证实了C-PS @ Fe 3 O 4的磁性。我们的结果表明，在C-PS的可见光活动的改善@的Fe 3 ö 4被全面分配给大和活性表面积由于电荷分离，催化功能，和磁性质的Fe诱导3 ö 4纳米粒子。最后，这项工作将提供合成具有可控形状的可见光活性纳米光催化剂的新策略，从而有效地进行环境修复。
更新日期：2020-12-10
中文翻译：
羧酸盐官能化聚苯乙烯@ Fe3O4纳米复合材料的可见光光催化活性提高及其机理研究
本文中，我们报告了一种独特的方法，用于合成凹形羧酸盐官能化聚苯乙烯（C-PS），然后通过共沉淀法原位涂覆Fe 3 O 4纳米颗粒。C‐PS @ Fe 3 O 4纳米复合材料的磁化强度已通过振动样品磁强计（VSM）的测量得到验证。最佳量的羧酸盐官能化磁性聚苯乙烯（C-PS @ Fe 3 O 4）与原始PS和C-PS相比，可见光对2,4-二氯苯酚降解的光催化活性提高了5.2和2.2倍。基于各种电分析技术，例如表面光电压光谱，程序升温脱附，Uv-DRS，扫描电子显微镜，透射电子显微镜和VSM，这些材料证实了C-PS @ Fe 3 O 4的磁性。我们的结果表明，在C-PS的可见光活动的改善@的Fe 3 ö 4被全面分配给大和活性表面积由于电荷分离，催化功能，和磁性质的Fe诱导3 ö 4纳米粒子。最后，这项工作将提供合成具有可控形状的可见光活性纳米光催化剂的新策略，从而有效地进行环境修复。
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