TY  - JOUR
AU  - Li, Waner
AU  - Zhang, Tingting
AU  - Feng, Chunyuan
AU  - Chen, Mantao
AU  - Sun, Zhaodi
AU  - Handberg, Eric Storr Sage
AU  - Wang, Bo
AU  - Zhong, Lixiang
AU  - Dai, Chunhui
PY  - 2026
TI  - Highly Efficient Simultaneous Photocatalytic Reduction of CO2 and O2 from Air Using Conjugated Microporous Polymers with Ionic Imidazolium Sites
JO  - Energy & Environmental Materials
SN  - 2575-0348
VL  - 9
IS  - 1
AB  - Efficient photocatalytic reduction of CO2 is crucial to decrease the atmospheric concentration of CO2. Pairing this process with H2O2 production is of considerable importance for simultaneously producing value-added chemicals. However, the photocatalysts reported for such a process suffer from a high recombination rate of the surface/bulk charges, as well as inefficient enrichment and activation toward CO2 and O2, resulting in low conversion efficiency even in the presence of organic sacrificial agents and expensive metal co-catalysts. Herein, two 1,3,5-triphenylbenzene-based organic polymers with high ionic density and porosity are prepared through a facile Sonogashira polymerization. The ionic imidazolium sites embedded in the polymeric skeleton provide the two polymers (iCMP-1 and iCMP-2) with adsorptive selectivity for CO2/N2 up to 98–102 at 273 K, facilitating the enrichment of CO2 and O2 molecules around the catalytic centers, thus boosting their catalytic conversion directly from air under solar light (100 mW cm−2). Benefiting from the improved charge separation and broad light absorption, along with high CO2 and O2 uptake, iCMP-2 can deliver excellent CO and H2O2 yields (611.8 and 810.6 μmol h−1 g−1, respectively) under an atmosphere composed of water vapor and air without any co-catalysts.
UR  - https://doi.org/10.1002/eem2.70114
DO  - 10.1002/eem2.70114