光催化
氢氧化物
层状双氢氧化物
尼亚尔
材料科学
光化学
吸附
钌
可见光谱
辐照
带隙
吸收(声学)
催化作用
化学工程
化学
无机化学
光电子学
有机化学
物理
合金
核物理学
金属间化合物
复合材料
工程类
作者
Shaoquan Li,Zixian Li,Jianing Yue,Huijuan Wang,Yujun Wang,Wenli Su,Geoffrey I. N. Waterhouse,L.H. Liu,Wenkai Zhang,Yufei Zhao
标识
DOI:10.1002/anie.202407638
摘要
Near‐infrared light‐driven photocatalytic CO2 reduction (NIR‐CO2PR) holds tremendous promise for the production of valuable commodity chemicals and fuels. However, designing photocatalysts capable of reducing CO2 with low energy NIR photons remains challenging. Herein, a novel NIR‐driven photocatalyst comprising an anionic Ru complex intercalated between NiAl‐layered double hydroxide nanosheets (NiAl‐Ru‐LDH) is shown to deliver efficient CO2 photoreduction (0.887 μmol h−1) with CO selectivity of 84.81% under 1200 nm illumination and excellent stability over 50 testing cycles. This remarkable performance results from the intercalated Ru complex lowering the LDH band gap (0.98 eV) via a compression‐related charge redistribution phenomenon. Furthermore, transient absorption spectroscopy data verified light‐induced electron transfer from the Ru complex towards the LDH sheets, increasing the availability of electrons to drive CO2PR. The presence of hydroxyl defects in the LDH sheets promotes the adsorption of CO2 molecules and lowers the energy barriers for NIR‐CO2PR to CO. To our knowledge, this is one of the first reports of NIR‐CO2PR at wavelengths up to 1200 nm in LDH‐based photocatalyst systems.
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