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Photocatalytic degradation of methylene blue by a cocatalytic PDA/TiO2 electrode produced by photoelectric polymerization
RSC Advances ( IF 3.9 ) Pub Date : 2020-7-10 , DOI: 10.1039/d0ra02076a Zehui Guo 1 , Guoqing Wang 1 , Haiqing Fu 1 , Peiqing Wang 2 , Jianhe Liao 1 , Aimin Wang 1
RSC Advances ( IF 3.9 ) Pub Date : 2020-7-10 , DOI: 10.1039/d0ra02076a Zehui Guo 1 , Guoqing Wang 1 , Haiqing Fu 1 , Peiqing Wang 2 , Jianhe Liao 1 , Aimin Wang 1
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This study reports a new method for photocatalysts to degrade organic dyes on organic semiconductors. A novel strategy is reported to form TiO2 nanorod (NR)/polydopamine (PDA) electrodes with a photoelectric polymerization strategy for PDA (pep-PDA) to produce cocatalytic electrodes. Amperometric i–t curves and UV-vis diffuse reflectance spectra were recorded and showed that compared with traditional self-polymerization (sp-PDA) and electropolymerization (ep-PDA), TiO2 NR/pep-PDA exhibited an enhanced photocatalytic activity under visible light. As expected, TiO2 NR/pep-PDA showed a significant improvement for the degradation of methylene blue (MB) under visible light, which can be attributed to the strong absorption of PDA in the visible light region and the more complete and uniform coverage of the TiO2 NRs by the pep-PDA film. This study not only proposes a novel and highly efficient way to load PDA on TiO2 NRs but also provides useful insights for the loading of other photocatalysts on organic semiconductors to degrade organic dyes.
中文翻译：
光电聚合法制备的助催化PDA/TiO2电极光催化降解亚甲基蓝
本研究报告了一种光催化剂降解有机半导体上有机染料的新方法。据报道，一种新的策略是形成 TiO 2纳米棒 (NR)/聚多巴胺 (PDA) 电极，采用 PDA (pep-PDA) 的光电聚合策略来生产助催化电极。记录电流i - t曲线和紫外-可见漫反射光谱，结果表明，与传统的自聚合（sp-PDA）和电聚合（ep-PDA）相比，TiO 2 NR/pep-PDA在可见光下表现出增强的光催化活性。光。正如所料，TiO 2NR/pep-PDA在可见光下对亚甲基蓝（MB）的降解有显着改善，这可归因于PDA在可见光区域的强吸收以及TiO 2 NRs的更完整和更均匀的覆盖pep-PDA 电影。本研究不仅提出了一种在 TiO 2 NRs上负载 PDA 的新型高效方法，而且为在有机半导体上负载其他光催化剂以降解有机染料提供了有用的见解。
更新日期：2020-07-10
中文翻译：
光电聚合法制备的助催化PDA/TiO2电极光催化降解亚甲基蓝
本研究报告了一种光催化剂降解有机半导体上有机染料的新方法。据报道，一种新的策略是形成 TiO 2纳米棒 (NR)/聚多巴胺 (PDA) 电极，采用 PDA (pep-PDA) 的光电聚合策略来生产助催化电极。记录电流i - t曲线和紫外-可见漫反射光谱，结果表明，与传统的自聚合（sp-PDA）和电聚合（ep-PDA）相比，TiO 2 NR/pep-PDA在可见光下表现出增强的光催化活性。光。正如所料，TiO 2NR/pep-PDA在可见光下对亚甲基蓝（MB）的降解有显着改善，这可归因于PDA在可见光区域的强吸收以及TiO 2 NRs的更完整和更均匀的覆盖pep-PDA 电影。本研究不仅提出了一种在 TiO 2 NRs上负载 PDA 的新型高效方法，而且为在有机半导体上负载其他光催化剂以降解有机染料提供了有用的见解。
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