A hollow carbon-modified Fe₃O₄ (H-C-Fe₃O₄) has been fabricated by a one-step and template-free solvothermal method with ethanol as the solvent. The catalytic activity of H-C-Fe₃O₄(ethanol) is investigated for solvent-free aerobic oxidation of benzyl alcohol to benzaldehyde with O₂. It is found that H-C-Fe₃O₄(ethanol) offer a superior benzaldehyde yield and selectivity. The good catalytic performance of H-C-Fe₃O₄(ethanol) benefits from the rich interfaces between the carbon and Fe₃O₄, plus the interspace voids introduced by its hollow structure. Besides, the target H-C-Fe₃O₄(ethanol) can be facilely recycled with a magnet and exhibits good potential for catalyst reuse.

中文翻译：

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一步法和无模板制备空心碳改性的Fe 3 O 4，用于催化苯甲醇的无溶剂需氧氧化

以乙醇为溶剂，通过一步法，无模板溶剂热法制备了空心碳改性的Fe ₃ O ₄（HC-Fe ₃ O ₄）。研究了HC-Fe ₃ O ₄（乙醇）的催化活性，该反应对于O ₂将苄醇无氧好氧氧化为苯甲醛。发现HC-Fe ₃ O ₄（乙醇）具有优异的苯甲醛产率和选择性。HC-Fe ₃ O ₄（乙醇）的良好催化性能得益于碳与Fe ₃ O ₄之间的丰富界面，以及空心结构引入的空隙。此外，目标HC-Fe ₃ O ₄（乙醇）可以用磁铁方便地再循环，并具有良好的催化剂再利用潜力。