Hollow α-Fe₂O₃ nanospindles have been designed and fabricated via a facile wrap–bake–peel process consisting of silica coating, calcination treatment and the removal of the silica coating layer. The excellent photocatalytic performance was attributed to the obtained hollow structure and the improved crystallinity of the photocatalyst, which also has good reusability in photocatalytic water oxidation, achieving up to 4 times higher activity than pristine Fe₂O₃ and the apparent quantum efficiency (AQE) of H₂ evolution reaches up to 2.14%. These results demonstrate that the hollow α-Fe₂O₃ nanospindles can be acted as a promising candidate for highly efficient photocatalyst of water oxidation.

中空的α-Fe _2个ö ₃ nanospindles已设计并通过由二氧化硅涂层，焙烧处理和去除二氧化硅被覆层的一个浅显的包裹式烘烤剥离工艺制造。优异的光催化性能归因于所获得的中空结构和光催化剂的改善的结晶度，在光催化水氧化中也具有良好的可重用性，其活性是原始Fe ₂ O _3的4倍以上，并且表观量子效率（AQE） H ₂逸出量高达2.14％。这些结果表明，在中空的α-Fe ₂ ö ₃ 纳米锭可以用作水氧化高效光催化剂的有前途的候选者。