Converting CO₂ into energy-rich fuels by using solar energy is a sustainable solution that promotes a carbon-neutral economy and mitigates our reliance on fossil fuels. However, affordable and efficient CO₂ conversion remains an ongoing challenge. Here, we introduce polymeric g-C₃N₄ into the pores of a hollow In₂O₃ microtube. This architecture results in a compact and staggered arrangement between g-C₃N₄ and In₂O₃ components with an increased contact interface for improved charge separation. The hollow interior further contributes to strengthening light absorption. The resulting g-C₃N₄-In₂O₃ hollow tubes exhibit superior activity (274 μmol·g^–1·h^–1) toward CO₂ to CO conversion in comparison with those of pure In₂O₃ and g-C₃N₄ (5.5 and 93.6 μmol·g^–1·h^–1, respectively), underlining the role of integrating g-C₃N₄ and In₂O₃ in this advanced system. This work offers a strategy for the advanced design and preparation of hollow heterostructures for optimizing CO₂ adsorption and conversion by integrating inorganic and organic semiconductors.

中文翻译：

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注入 g-C3N4 的多孔 In2O3 空心管用于 CO2 光催化还原

利用太阳能将CO _{2转化为能源丰富的燃料是一种可持续的解决方案，可促进碳中和经济并减轻我们对化石燃料的依赖。}然而，经济且高效的CO ₂转化仍然是一个持续的挑战。在这里，我们将聚合物 gC ₃ N _{4引入中空 In 2} O ₃微管的孔中。这种结构导致gC ₃ N ₄和In ₂ O ₃部件之间的紧凑且交错的布置，并具有增加的接触界面以改善电荷分离。中空的内部进一步有助于加强光吸收。_{与纯 In 2} O ₃和 gC ₃ N ₄相比，所得的gC ₃ N ₄ -In ₂ O ₃空心管在 CO _{2转化为 CO 方面表现出优异的活性 (274 μmol·g} ^–1 ·h ^–1 ) (分别为5.5 和 93.6 μmol·g ^–1 ·h ^–1 ），强调了在这个先进系统中整合 gC ₃ N ₄和 In ₂ O ₃的作用。这项工作为中空异质结构的先进设计和制备提供了一种策略，通过整合无机和有机半导体来优化CO ₂吸附和转化。