Photocatalytic conversion of CO₂ into fuel and value-added chemicals as a promising method has been applied recently to ease energy- or environment-related crises. Herein, we construct an In₂S₃@NH₂-MIL-68(In)@In₂S₃ (denoted as SMS(In)) sandwich homologous heterojunction via a controllable in situ metal–organic frameworks (MOF) sulfuration process. The improved photoreduction activity mainly lies in the effective charge transfer and separation through a homogeneous interface, enhanced CO₂ adsorption and mass transfer, and plentiful reactive sites. Benefiting from this unique hollow homologous heterojunction, SMS(In)-7 obtains a CO generation rate as high as 11.23 μmol g^–1 h^–1 with visible-light irradiation, nearly 3 times enhancement over that of pure MOF-derived In₂S₃. This work provides a novel insight into the utilization of MOF-based platform for an efficient atomically heterojunction design.

中文翻译：

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In ₂ S ₃ @NH ₂ -MIL-68（In）@In ₂ S ₃夹心同质异质结的构建，以高效还原CO ₂

最近，已将CO ₂光催化转化为燃料和增值化学品作为一种有前途的方法，用于缓解与能源或环境有关的危机。在这里，我们通过可控的原位金属-有机骨架（MOF）硫化过程构建了一个In ₂ S ₃ @NH ₂ -MIL-68（In）@In ₂ S ₃（表示为SMS（In））夹心同源异质结。改善的光还原活性主要在于通过均质界面有效的电荷转移和分离，提高了CO ₂吸附和传质，以及大量的反应位点。得益于这种独特的中空异质异质结，SMS（In）-7在可见光照射下的CO生成率高达11.23μmolg ^–1 h ^–1，比纯MOF衍生的In ₂ S高近3倍。₃。这项工作为基于MOF的平台的有效原子异质结设计的利用提供了新颖的见解。