Jafarpour Maasoumeh, Rezaeifard Abdolreza, Pourmorteza Narges, Kudeyani Maryam Ghanbari
Department of Organic Chemistry, Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 65178-38695, Iran.
Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand, Birjand, 97179-414, Iran.
Sci Rep. 2024 Nov 6;14(1):27017. doi: 10.1038/s41598-024-76198-z.
A visible light-responsive magnetically separable photocatalyst Pd-g-CN-Vanillin@γ-FeO-TiO is fabricated using vanillin as a natural junction under ultrasonic agitation. Structural, morphological, optical, thermal, and magnetic assessments of the as-prepared catalyst are carried out. The photocatalyst successfully drives the simultaneous benzimidazole formation, and olefin hydrogenation with high atom economy under blue LED light and mild conditions. The photocatalytic activity of Pd-g-CN-Vanillin@γ-FeO-TiO is significantly affected by the γ-FeO:TiO weight ratio. PL spectra revealed the effective separation of carriers in the fabricated catalyst promoting its photocatalytic activity. The action spectra using the apparent quantum efficiency (AQE) exhibited the maximum AQEs at 520 and 750 nm in which the highest performance for styrene hydrogenation is observed. The title magnetically separable heterogeneous photocatalyst provides high yields of products under perfectly safe visible light, produces low/zero waste, and avoids using an external high-pressure hydrogen gas source, harmful solvents, undesirable additives, and reducing agents rendering green conditions for chemical reactions.
以香草醛为天然结，在超声搅拌下制备了一种可见光响应型磁性可分离光催化剂Pd-g-CN-Vanillin@γ-FeO-TiO。对所制备的催化剂进行了结构、形态、光学、热学和磁性评估。该光催化剂在蓝色LED光和温和条件下成功驱动了苯并咪唑的同时形成以及具有高原子经济性的烯烃氢化反应。Pd-g-CN-Vanillin@γ-FeO-TiO的光催化活性受γ-FeO:TiO重量比的显著影响。PL光谱表明所制备催化剂中载流子的有效分离促进了其光催化活性。使用表观量子效率（AQE）的作用光谱在520和750 nm处表现出最大的AQE，其中观察到苯乙烯氢化的最高性能。该磁性可分离多相光催化剂在完全安全的可见光下提供高产率的产物，产生低/零废物，并且避免使用外部高压氢气源、有害溶剂、不良添加剂和还原剂，为化学反应提供了绿色条件。
