Highly Ordered Hierarchically Macroporous MIL-125 with High Specific Surface Area for Photocatalytic CO₂ Fixation
2019
Wu, Songhua | Xing, Xiaofei | Wang, Dan | Zhang, Jianzheng | Chu, Junmei | Yu, Chengcheng | Wei, Zhiting | Hu, Mingliang | Zhang, Xin | Li, Zhenxing
Highly ordered hierarchical macroporous metal–organic framework (MOF) materials (macroporous MIL-125) have been successfully synthesized through a solvent evaporation-induced self-assembly route in one step. The obtained macroporous MIL-125 showed an extremely high specific surface area with the Brunauer–Emmett–Teller surface area reaching up to 1083 m²/g. Moreover, macroporous MIL-125 exhibited ordered hierarchical porous structure and excellent ultraviolet absorption ability. At present, atmospheric chemical fixation of CO₂ is commonly used as a catalyst for noble metal materials, and few macroporous MOF materials are used for chemical fixation of CO₂. Macroporous MIL-125 was used as the photocatalyst for atmospheric chemical fixation of CO₂ and showed high cycle stability, good tolerance to substrates, and excellent yields of CO₂ carbonylative coupling reactions under ultraviolet irradiation. These finding provides a novel route for chemical fixation of CO₂ with photocatalysis through MOF materials.
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