Targeted Electron‐Hole Separation to Decoupled Redox‐Active Sites Over a PEA2PbBr4/CeO2 P‐N Heterojunction for Enhanced Photocatalytic Oxidation DOI
Ying Chen,

Sunzai Ke,

Xuhui Yang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Abstract Photocatalytic selective oxidation of C(sp 3 )─H bonds into valuable carbonyl compounds offers a promising approach to advance green organic synthesis and contribute more sustainable chemical industry. However, significant challenges remain due the low efficiency photocatalysts, primarily caused by insufficient charge separation limited ability intermixed surface redox‐active sites precisely capture photoinduced carriers. Here, PEA 2 PbBr 4 /CeO (PPB/CeO ) p‐n heterojunction is designed fabricated. Experimental characterizations theoretical calculations reveal that strong internal electric field (IEF) formed at interface within heterojunction, which drives targeted accumulation holes on PPB electrons CeO . Importantly, displays superior oxygen affinity facilitating O reduction, while validates stronger adsorption activation capability toluene molecule promoting C─H bond dissociation. In this context, are directionally separated transported decoupled reduction in PPB/CeO , thereby significantly accelerating aerobic bonds. Toward photocatalytic model substrate toluene, optimized ‐5% composite exhibits conversion rate 10 050 µmol g −1 h nine times enhanced comparison with blank (1160 ).

Language: Английский

Editing Benzotrithiophene-Based Covalent Organic Frameworks for Developing New Sonosensitizers DOI
Chunyuan Hou,

Nan Han,

Bin Zhu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 2, 2025

Recent insights into covalent organic frameworks (COFs) provide an opportunity for developing new sonosensitizers with the advantages of both small molecules and inorganic nanoagents. Herein, we synthesize two benzotrithiophene-based imine-linked COFs (BTT-DPh-COF BTT-DPy-COF) through density-functional-theory-guided structure editing. The tailored donor-acceptor (D-A) structures optimize band position endow them good intrinsic sonodynamic activity, which can efficiently kill cancer cells, showing excellent therapeutic effect. Particularly, because enhanced D-A effect that promotes charge separation transfer behavior, BTT-DPy-COF exhibits superior ultrasound-triggered reactive oxygen species (ROS) generation capability than BTT-DPh-COF. Therefore, these studies highlight great potential elaborate editing configurations as suitable candidates advanced sonosensitizers.

Language: Английский

Citations

0
Targeted Electron‐Hole Separation to Decoupled Redox‐Active Sites Over a PEA2PbBr4/CeO2 P‐N Heterojunction for Enhanced Photocatalytic Oxidation DOI
Ying Chen,

Sunzai Ke,

Xuhui Yang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Abstract Photocatalytic selective oxidation of C(sp 3 )─H bonds into valuable carbonyl compounds offers a promising approach to advance green organic synthesis and contribute more sustainable chemical industry. However, significant challenges remain due the low efficiency photocatalysts, primarily caused by insufficient charge separation limited ability intermixed surface redox‐active sites precisely capture photoinduced carriers. Here, PEA 2 PbBr 4 /CeO (PPB/CeO ) p‐n heterojunction is designed fabricated. Experimental characterizations theoretical calculations reveal that strong internal electric field (IEF) formed at interface within heterojunction, which drives targeted accumulation holes on PPB electrons CeO . Importantly, displays superior oxygen affinity facilitating O reduction, while validates stronger adsorption activation capability toluene molecule promoting C─H bond dissociation. In this context, are directionally separated transported decoupled reduction in PPB/CeO , thereby significantly accelerating aerobic bonds. Toward photocatalytic model substrate toluene, optimized ‐5% composite exhibits conversion rate 10 050 µmol g −1 h nine times enhanced comparison with blank (1160 ).

Language: Английский

Citations

0