Details
| Original language | English |
|---|---|
| Article number | 2400081 |
| Number of pages | 10 |
| Journal | Solar RRL |
| Volume | 8 |
| Issue number | 9 |
| Early online date | 25 Mar 2024 |
| Publication status | Published - 6 May 2024 |
Abstract
The effective utilization of light is crucial in the use of the solar energy for CO2 conversion into valuable fuels and chemicals, in which improving the photocatalytic materials’ capacity to absorb light is a key. Herein, a 2D copper–porphyrin metal−organic framework (MOF)-photosensitized titania, TiO2/Zn–CuTCPP, is reported, which can absorb wide range of light and photoreduce CO2 with high efficiency under full spectrum irradiation. Fluorescence spectral analysis elucidates the relationship between the photocatalytic activity and the electron–hole separation efficiency. In addition, mechanistic information obtained from electron paramagnetic resonance and in situ infrared analyses demonstrates that the presence of Cu–N4 site in the MOF structure is conducive to the generation of hydrogen free radicals (•H), which plays a key role in the formation of intermediates, thus facilitating the hydrogenation in the reaction process. Consequently, TiO2/Zn–CuTCPP significantly enhances the photocatalytic conversion of CO2 into CH4 with a yield 14 times higher than that of P25.
Keywords
- copper–porphyrin, metal−organic frameworks, photocatalytic CO reduction, photosensitization
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
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In: Solar RRL, Vol. 8, No. 9, 2400081, 06.05.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - 2D Copper–Porphyrin Metal–Organic Framework Nanosheet-Photosensitized TiO2 for Efficiently Broadband Light-Driven Conversion of CO2 to CH4
AU - Xu, Xiaoqian
AU - Wang, Hui
AU - Gao, Ting
AU - Luo, Tian
AU - Zvere, Irina
AU - Orudzhev, Farid
AU - Wang, Chuanyi
AU - Bahnemann, Detlef Wemer
N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (grant nos. 52161145409 and 21976116), Shaanxi Science and Technology Program (grant no. 2020KWZ‐005), and Foreign Expert Project of SAFEA of China (grant nos. DL2023041004L and G2023041021L).
PY - 2024/5/6
Y1 - 2024/5/6
N2 - The effective utilization of light is crucial in the use of the solar energy for CO2 conversion into valuable fuels and chemicals, in which improving the photocatalytic materials’ capacity to absorb light is a key. Herein, a 2D copper–porphyrin metal−organic framework (MOF)-photosensitized titania, TiO2/Zn–CuTCPP, is reported, which can absorb wide range of light and photoreduce CO2 with high efficiency under full spectrum irradiation. Fluorescence spectral analysis elucidates the relationship between the photocatalytic activity and the electron–hole separation efficiency. In addition, mechanistic information obtained from electron paramagnetic resonance and in situ infrared analyses demonstrates that the presence of Cu–N4 site in the MOF structure is conducive to the generation of hydrogen free radicals (•H), which plays a key role in the formation of intermediates, thus facilitating the hydrogenation in the reaction process. Consequently, TiO2/Zn–CuTCPP significantly enhances the photocatalytic conversion of CO2 into CH4 with a yield 14 times higher than that of P25.
AB - The effective utilization of light is crucial in the use of the solar energy for CO2 conversion into valuable fuels and chemicals, in which improving the photocatalytic materials’ capacity to absorb light is a key. Herein, a 2D copper–porphyrin metal−organic framework (MOF)-photosensitized titania, TiO2/Zn–CuTCPP, is reported, which can absorb wide range of light and photoreduce CO2 with high efficiency under full spectrum irradiation. Fluorescence spectral analysis elucidates the relationship between the photocatalytic activity and the electron–hole separation efficiency. In addition, mechanistic information obtained from electron paramagnetic resonance and in situ infrared analyses demonstrates that the presence of Cu–N4 site in the MOF structure is conducive to the generation of hydrogen free radicals (•H), which plays a key role in the formation of intermediates, thus facilitating the hydrogenation in the reaction process. Consequently, TiO2/Zn–CuTCPP significantly enhances the photocatalytic conversion of CO2 into CH4 with a yield 14 times higher than that of P25.
KW - copper–porphyrin
KW - metal−organic frameworks
KW - photocatalytic CO reduction
KW - photosensitization
UR - http://www.scopus.com/inward/record.url?scp=85189079039&partnerID=8YFLogxK
U2 - 10.1002/solr.202400081
DO - 10.1002/solr.202400081
M3 - Article
AN - SCOPUS:85189079039
VL - 8
JO - Solar RRL
JF - Solar RRL
IS - 9
M1 - 2400081
ER -