Abstract Superparamagnetic iron oxide nanoparticles of different shapes and sizes combined with 5-(4-carboxyphenyl)-10,15,20-triphenylporphinatozinc(II) (SPION-ZnCTPP) were prepared and investigated as a novel and potent magnetically responsive photocatalyst. Nanospheres and nanocubes of SPIONs in the sizes of 10 and 20 nm were synthesized using thermal decomposition method before coating with ZnCTPP. Morphologies of SPIONs were observed using a transmission electron microscope (TEM). Herein the attachment of ZnCTPP on particles was studied using various techniques including infrared spectroscopy (IR) and UV-visible spectroscopy and Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). Moreover, the obtained particles showed superparamagnetic character with saturation magnetization in a range of 10 to 76 emu/g, depending on the size and shape of the SPIONs. The SPION-ZnCTPP showed high photocatalytic activity (52% yield) for amide synthesis between potassium ethanethioate and 4-methoxyaniline under irradiation with a 19 W LED lamp, and this heterogeneous catalyst could be well separated from a solution under the induction of an external magnetic field.

中文翻译：

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羧苯基卟啉修饰的氧化铁纳米球和纳米立方体及其在室温酰胺合成中的磁、光学特性和光催化活性

摘要 制备了不同形状和尺寸的超顺磁性氧化铁纳米粒子与 5-(4-羧基苯基)-10,15,20-三苯基卟吩锌 (II) (SPION-ZnCTPP) 结合作为一种新型高效的磁响应光催化剂。在用 ZnCTPP 涂覆之前，使用热分解法合成了 10 和 20 nm 大小的 SPION 纳米球和纳米立方体。使用透射电子显微镜 (TEM) 观察 SPION 的形态。在本文中，使用各种技术研究了 ZnCTPP 在颗粒上的附着，包括红外光谱 (IR) 和紫外-可见光谱以及电感耦合等离子体发射光谱 (ICP-OES)。此外，所得颗粒表现出超顺磁性，饱和磁化强度在 10 至 76 emu/g 范围内，取决于 SPION 的大小和形状。SPION-ZnCTPP 在 19 W LED 灯照射下对乙硫醇钾和 4-甲氧基苯胺之间的酰胺合成表现出很高的光催化活性（52% 产率），并且这种多相催化剂可以在外部磁感应下从溶液中很好地分离出来。场地。