Unexpected wavelength dependency of the photocatalytic CO2 reduction performance of the well-known (bpy)Re(CO)3Cl complex
Unexpected wavelength dependency of the photocatalytic CO2 reduction performance of the well-known (bpy)Re(CO)3Cl complex
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DOI：
10.1039/c8cc08742c
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发表时间：
2019-01-16
影响因子：
4.9
通讯作者：
Schwalbe, Matthias
中科院分区：
文献类型：
--
作者：
Lang, Philipp;Giereth, Robin;Schwalbe, Matthias
CO 2的选择性光催化还原为CO，通常使用包含Re（CO）（3）Cl片段的配合物来完成。我们现在发现，众所周知的母体化合物（bpy）Re（CO）（3）Cl的光催化性能（bpy = 2，2 '-联吡啶）令人惊讶地取决于照射波长：当用波长大于450 nm的可见光照射时，使用各种截止滤光器测量的转换数（TON）显示出增加的光催化活性。即使该化合物几乎不吸收该波长区域的光。因此，催化，光谱和理论研究进行解释这种特殊的效果。
The selective photocatalytic reduction of CO2 to CO has often been accomplished using complexes incorporating the Re(CO)(3)Cl fragment. We now discovered that the photocatalytic performance of the well-known parent compound (bpy) Re(CO)(3)Cl (bpy = 2,2'-bipyridine) surprisingly depends on the illumination wavelengths: the turnover numbers (TONs) measured using various cut-off filters showed an increased photocatalytic activity when irradiated with visible light with wavelengths longer than 450 nm - even if the compound hardly absorbs light in this wavelength region. Therefore, catalytic, spectroscopic and theoretical investigations were performed to explain this exceptional effect.