Molecular Level Design of Conjugated Polymers Based on a Synergistic Adsorption-Photocatalytic Strategy for Efficient Uranium Capture
Chemical Engineering Journal(2024)
Abstract
Conjugated microporous polymers (CMPs) are potential materials for removing radioactive contaminants due to their unique properties. Herein, we designed and synthesized a series of CMPs at the molecular level by modifying the electron transport bridge and incorporating acceptor units based on the synergistic adsorption-photocatalysis strategy. The obtained CMPs exhibit a strong affinity for uranium, and their more homogeneous electronic structure becomes more efficient D-π-A electron transport chain contribute to a lower exciton dissociation energy. Further electronic excitation analysis based on time-varying density functional theory shows that the electron-hole distribution and intramolecular charge transfer of the CMPs are significantly optimized, thus enhancing photocatalytic activity. This study enhances the performance of the adsorption-photocatalytic uranium trapping strategy by precisely modulating in the synthesis and provides theoretical guidance for developing materials for treating nuclear pollution.
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Key words
Conjugated microporous polymers,Molecular-level regulation,Uranium removal,Adsorption-photocatalytic,Exciton dissociation
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