Maqola

Integrating Uranyl-Affinity “Hooks” into Conjugated Polymers Achieving Giant Built-in Electric Field for Boosting Photocatalytic Uranium Extraction from Seawater

Mei XuState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, People’s Republic of ChinaFengtao YuState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, People’s Republic of ChinaYiping LiuState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, People’s Republic of ChinaWanru LiState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, People’s Republic of ChinaChuangye LiState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, People’s Republic of ChinaFangru SongState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, People’s Republic of ChinaGuihong WuState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, People’s Republic of ChinaZhenzhen XuState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, People’s Republic of ChinaJian‐Ding QiuState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, People’s Republic of China

2024en

Ochiq kirish: yoʻq

ABI

Annotatsiya

Insufficient charge separation and sluggish exciton transport seriously restrict the practical application of photocatalytic uranium extraction from seawater. In this study, a D-π-A conjugated microporous polymer is synthesized using perylene, phosphonate-containing fluorene, and benzothiadiazole as D, π-linker, and A units, respectively, as novel uranium extraction photocatalysts. Both experimental and theoretical studies have demonstrated that the D-π-A structure simultaneously expands π-electron delocalization and promotes intramolecular charge transfer, thus accelerating the photocatalytic reaction. More importantly, phosphate ester and benzothiadiazole together act as uranyl-affinity “hooks” in the skeleton, adding the asymmetry and expanding the built-in electric field, thereby enhancing the driving force of photogenerated charge separation and elevating the charge separation efficiency (84.8%). The results show that the photocatalytic uranium extraction capacity of CMP-D-π′-A reaches 11.68 ± 0.21 mg g–1, exceeding most reported photocatalysts. These findings provide a promising avenue for the development of uranium extraction materials through regulating the interfacial electric field.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1021/acs.macromol.4c00717

Iqtiboslar va manbalar

5 ta iqtibos0 ta foydalanilgan manba