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可见光驱动的二氧化碳光降解由一个Re(I) 复合物固定在CuO/Nb2O5异质连接上

Gabriela N Silva¹, Leandro A Faustino¹, Lucas L Nascimento¹

¹Laboratory of Photochemistry and Materials Science, LAFOT-CM, Universidade Federal de Uberlândia, 38400-902 Uberlândia, MG, Brazil.

The Journal of chemical physics

|January 16, 2024

概括

在铜氧化物/氧化物 (CuO/Nb2O5) 表面上固定 (renium) 复合物,可显著提高光催化二氧化碳的减少. 这种增强的稳定性和效率为可持续的二氧化碳转化提供了一个有希望的途径.

科学领域:

材料科学材料科学材料科学
光催化作用的光催化
无机化学无机化学有机化学

背景情况:

在金属氧化物上的 (I) 复合物的固定增强了光催化二氧化碳减排的稳定性和可重复使用性.
(I) 复合物是有效的二氧化碳减排催化剂,但在溶液中经常存在稳定性问题.

研究的目的:

为了研究一个 (I) 复合体的光催化性能,fac-[ClRe (CO) 3 (dcbH2) ],在CuO/Nb2O5异构结构上固定,以减少二氧化碳.
评估CuO/Nb2O5支持对 (I) 催化剂的效率和稳定性的影响.

主要方法:

合成和表征 (I) 复合物fac-[ClRe (CO) 3 (dcbH2) ]与4,4'-二碳酸-2,2'-双 (dcbH2) 的合成和表征.
复合物的固定在1%m/m CuO/Nb2O5表面上.
在可见光照射下在DMF/TEOA中进行的光催化CO2减少实验.

主要成果:

在CuO/Nb2O5上的固定复合体,CO生产的营业额 (TONCO) 从溶液中的10增加到370.
CuO/Nb2O5异构结构促进了高效的电子注入和电荷与Re (I) 中心的分离.
CuO集群引入了550nm以上的新吸收带,增强光还原和CO演变,同时最大限度地减少副作用.

结论:

在CuO/Nb2O5上固定fac-[ClRe(CO) 3(dcbH2) ]是一种高度有效的策略,用于增强光催化二氧化碳减排.
Re (I) 复合体和CuO/Nb2O5异构的协同效应导致了优越的催化性能和稳定性.
这种方法为有效和可持续地将二氧化碳转化为有价值产品提供了一个有希望的途径.

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