Converting Organic Wastewater into CO Using MOFs-Derived Co/In2O3 Double-Shell Photocatalyst,ACS Applied Materials & Interfaces

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Converting Organic Wastewater into CO Using MOFs-Derived Co/In2O3 Double-Shell Photocatalyst
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-08-23 , DOI: 10.1021/acsami.1c12800
Qian Liang ₁ , Shuang Zhao ₁ , Zhongyu Li ₁ , Zhenyu Wu ₂ , Hong Shi ₂ , Hui Huang ₂ , Zhenhui Kang _{2,

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Affiliation

The photocatalytic conversion of organic wastewater into value-added chemicals is a promising strategy to solve the environmental issue and energy crisis. Herein, Co/In₂O₃ nanotubes with a double-shell structure, as a highly efficient photocatalyst, are synthesized by a one-step calcination method. The Co/In₂O₃ heterostructure shows an outstanding photocatalytic CO₂ reduction performance of 4902 μmol h^–1 g^–1. Notably, these Co/In₂O₃ photocatalysts also achieve CO₂ self-generation and in situ reduction conversion in acid organic wastewater (phenol solution), in which the high CO₂ (47.5 μmol h^–1 g^–1) and CO (0.9 μmol h^–1 g^–1) evolution rates are demonstrated under solar irradiation. Transient photovoltage (TPV) tests demonstrate that Co nanoparticles on Co/In₂O₃ double-shell heterostructure serve as the CO₂ reduction sites for the effective capture and stabilization of the photogenerated electrons.

中文翻译：

使用 MOF 衍生的 Co/In2O3 双壳光催化剂将有机废水转化为 CO

将有机废水光催化转化为高附加值化学品是解决环境问题和能源危机的一个有前景的策略。在此，通过一步煅烧法合成了具有双壳结构的Co/In ₂ O ₃纳米管作为一种高效的光催化剂。Co/In ₂ O ₃异质结构显示出出色的光催化CO ₂还原性能，为4902 μmol h ^–1 g ^–1。值得注意的是，这些 Co/In ₂ O ₃光催化剂还实现了 CO ₂自生成和原位酸性有机废水（苯酚溶液）中的还原转化率，其中在太阳辐射下证明了高 CO ₂ (47.5 μmol h ^–1 g ^–1 ) 和 CO (0.9 μmol h ^–1 g ^–1 ) 的释放速率。瞬态光电压 (TPV) 测试表明 Co/In ₂ O ₃双壳异质结构上的 Co 纳米颗粒作为 CO ₂还原位点，可有效捕获和稳定光生电子。

更新日期：2021-09-01

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